Arbitrary Code Execution Affecting lilconfig package, versions >=3.1.0 <3.1.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-JS-LILCONFIG-6263789
- published30 Oct 2024
- disclosed22 Feb 2024
- creditAnton Kastritskiy
Introduced: 22 Feb 2024
CVE-2024-21537 (opens in a new tab)How 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);