Arbitrary Code Execution Affecting lilconfig package, versions >=3.1.0 <3.1.1
Threat Intelligence
Exploit Maturity
Proof of concept
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Test your applications- Snyk ID SNYK-JS-LILCONFIG-6263789
- published 30 Oct 2024
- disclosed 22 Feb 2024
- credit Anton Kastritskiy
Introduced: 22 Feb 2024
CVE-2024-21537 Open this link in a new tabHow to fix?
Upgrade lilconfig to version 3.1.1 or higher.
Overview
lilconfig is an A zero-dependency alternative to cosmiconfig
Affected versions of this package are vulnerable to Arbitrary Code Execution due to the insecure usage of eval in the dynamicImport function. An attacker can exploit this vulnerability by passing a malicious input through the defaultLoaders function.
PoC
const { defaultLoaders } = require('lilconfig');
const maliciousInput = "'+console.log('hacked!!!')+'";
defaultLoaders[".js"](maliciousInput);