In versions `<=8.5.1` of `jsonwebtoken` library, lack of algorithm definition in the `jwt.verify()` function can lead to signature validation bypass due to defaulting to the `none` algorithm for signature verification. Users are affected if you do not specify algorithms in the `jwt.verify()` function. This issue has been fixed, please update to version 9.0.0 which removes the default support for the none algorithm in the `jwt.verify()` method. There will be no impact, if you update to version 9.0.0 and you don’t need to allow for the `none` algorithm. If you need 'none' algorithm, you have to explicitly specify that in `jwt.verify()` options.
CVE-2022-23540 - Medium Severity Vulnerability
JSON Web Token implementation (symmetric and asymmetric)
Library home page: https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-8.4.0.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/jsonwebtoken/package.json
Dependency Hierarchy: - :x: **jsonwebtoken-8.4.0.tgz** (Vulnerable Library)
Found in HEAD commit: 5ce352c75fbe6372f4f2df4d5ed63e7ced820f77
Found in base branch: master
In versions `<=8.5.1` of `jsonwebtoken` library, lack of algorithm definition in the `jwt.verify()` function can lead to signature validation bypass due to defaulting to the `none` algorithm for signature verification. Users are affected if you do not specify algorithms in the `jwt.verify()` function. This issue has been fixed, please update to version 9.0.0 which removes the default support for the none algorithm in the `jwt.verify()` method. There will be no impact, if you update to version 9.0.0 and you don’t need to allow for the `none` algorithm. If you need 'none' algorithm, you have to explicitly specify that in `jwt.verify()` options.
Publish Date: 2022-12-22
URL: CVE-2022-23540
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: High - Privileges Required: Low - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: Low - Integrity Impact: High - Availability Impact: Low
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://www.cve.org/CVERecord?id=CVE-2022-23540
Release Date: 2022-12-22
Fix Resolution: 9.0.0
Step up your Open Source Security Game with Mend here