js-yaml@3.9.1

Vulnerabilities 2 via 2 paths
Dependencies 3
Source npm
Package js-yaml

Find, fix and prevent vulnerabilities in your code.

Severity
  • 1
  • 1
Status
  • 2
  • 0
  • 0
high severity

Arbitrary Code Execution

  • Vulnerable module: js-yaml
  • Introduced through: js-yaml@3.9.1

Detailed paths

  • Introduced through: js-yaml@3.9.1
    Remediation: Upgrade to js-yaml@3.13.1.

Overview

js-yaml is a human-friendly data serialization language.

Affected versions of this package are vulnerable to Arbitrary Code Execution. When an object with an executable toString() property used as a map key, it will execute that function. This happens only for load(), which should not be used with untrusted data anyway. safeLoad() is not affected because it can't parse functions.

Remediation

Upgrade js-yaml to version 3.13.1 or higher.

References

medium severity

Denial of Service (DoS)

  • Vulnerable module: js-yaml
  • Introduced through: js-yaml@3.9.1

Detailed paths

  • Introduced through: js-yaml@3.9.1
    Remediation: Upgrade to js-yaml@3.13.0.

Overview

js-yaml is a human-friendly data serialization language.

Affected versions of this package are vulnerable to Denial of Service (DoS). The parsing of a specially crafted YAML file may exhaust the system resources.

Details

Denial of Service (DoS) describes a family of attacks, all aimed at making a system inaccessible to its intended and legitimate users.

Unlike other vulnerabilities, DoS attacks usually do not aim at breaching security. Rather, they are focused on making websites and services unavailable to genuine users resulting in downtime.

One popular Denial of Service vulnerability is DDoS (a Distributed Denial of Service), an attack that attempts to clog network pipes to the system by generating a large volume of traffic from many machines.

When it comes to open source libraries, DoS vulnerabilities allow attackers to trigger such a crash or crippling of the service by using a flaw either in the application code or from the use of open source libraries.

Two common types of DoS vulnerabilities:

  • High CPU/Memory Consumption- An attacker sending crafted requests that could cause the system to take a disproportionate amount of time to process. For example, commons-fileupload:commons-fileupload.

  • Crash - An attacker sending crafted requests that could cause the system to crash. For Example, npm ws package

Remediation

Upgrade js-yaml to version 3.13.0 or higher.

References