CVE-2022-23540: jsonwebtoken vulnerable to signature validation bypass due to insecure default algorithm in jwt.verify()
First published: Thu Dec 22 2022(Updated: )
# Overview In versions <=8.5.1 of jsonwebtoken library, lack of algorithm definition and a falsy secret or key in the `jwt.verify()` function can lead to signature validation bypass due to defaulting to the `none` algorithm for signature verification. # Am I affected? You will be affected if all the following are true in the `jwt.verify()` function: - a token with no signature is received - no algorithms are specified - a falsy (e.g. null, false, undefined) secret or key is passed # How do I fix it? Update to version 9.0.0 which removes the default support for the none algorithm in the `jwt.verify()` method. # Will the fix impact my users? 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.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/jsonwebtoken | <9.0.0 | 9.0.0 |
| IBM Cognos Analytics | <=12.0-12.0.2 | |
| IBM Cognos Analytics | <=11.2.0-11.2.4 FP2 | |
| npm/jsonwebtoken | <9.0.0 | 9.0.0 |
| jsonwebtoken | <=8.5.1 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-23540 https://nvd.nist.gov/vuln/detail/CVE-2022-23540 https://github.com/auth0/node-jsonwebtoken/security/advisories/GHSA-qwph-4952-7xr6
- https://bugzilla.redhat.com/show_bug.cgi?id=2169378
- https://access.redhat.com/errata/RHSA-2023:3742
- https://access.redhat.com/security/cve/cve-2022-23540
- https://github.com/auth0/node-jsonwebtoken/commit/e1fa9dcc12054a8681db4e6373da1b30cf7016e3
- https://github.com/auth0/node-jsonwebtoken/security/advisories/GHSA-qwph-4952-7xr6
- https://security.netapp.com/advisory/ntap-20240621-0007/
- https://exchange.xforce.ibmcloud.com/vulnerabilities/242969
- https://www.ibm.com/support/pages/node/7149874 (Advisory)
- https://nvd.nist.gov/vuln/detail/CVE-2022-23540
- https://security.netapp.com/advisory/ntap-20240621-0007
- https://github.com/advisories/GHSA-qwph-4952-7xr6 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2022-23540?
CVE-2022-23540 has been rated with a high severity level due to the potential for signature validation bypass.
How do I fix CVE-2022-23540?
To fix CVE-2022-23540, upgrade the jsonwebtoken library to version 9.0.0 or later.
Which versions are affected by CVE-2022-23540?
CVE-2022-23540 affects jsonwebtoken versions 8.5.1 and earlier.
What impact does CVE-2022-23540 have on applications?
CVE-2022-23540 can allow attackers to bypass signature verification, compromising the security of applications relying on the jsonwebtoken library.
Which products utilize vulnerable versions related to CVE-2022-23540?
Affected products include Auth0's jsonwebtoken library and IBM's Cognos Analytics versions up to 12.0.2.
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