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| Issuer: "server", | ||
| Subject: "Paz", | ||
| } | ||
| const token = jwt.sign(payload, SECRET, algo); |
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Ensure Usage of JWT Algo
Source File: UseEnsureJwtAlgo.js, Sink File: DefEnsureJwtAlgo.js | Checkov ID: CKV3_SAST_146
Data Flow
UseEnsureJwtAlgo.js
3 | let myInSecureAlgo = { algorithm: 'none' }
UseEnsureJwtAlgo.js
6 | GenerateJWT(myInSecureAlgo);
DefEnsureJwtAlgo.js
10 | const token = jwt.sign(payload, SECRET, algo);
Description
CWE: CWE-327: Use of a Broken or Risky Cryptographic Algorithm
OWASP: A02:2021 - Cryptographic Failures
This policy detects the usage of JWT (JSON Web Token) with a non-secure algorithm.
Vulnerable code example:
const jwt = require('jsonwebtoken');
const payload = {
user: 'admin',
role: 'admin'
};
const token = jwt.sign(payload, 'secret', { algorithm: 'none' });
console.log(token);In the above code, the algorithm option for JWT signing is set to 'none'. This means that the JWT token is not encrypted and can be easily tampered with or read by unauthorized parties.
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