CVE-2022-29217
Description
PyJWT is a Python implementation of RFC 7519. PyJWT supports multiple different JWT signing algorithms. With JWT, an attacker submitting the JWT token can choose the used signing algorithm. The PyJWT library requires that the application chooses what algorithms are supported. The application can specify `jwt.algorithms.get_default_algorithms()` to get support for all algorithms, or specify a single algorithm. The issue is not that big as `algorithms=jwt.algorithms.get_default_algorithms()` has to be used. Users should upgrade to v2.4.0 to receive a patch for this issue. As a workaround, always be explicit with the algorithms that are accepted and expected when decoding.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 2.4.0-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 2.4.0-1 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 2.4.0-1 |
| debian | sid | fixed | 2.4.0-1 |
| debian | trixie | fixed | 2.4.0-1 |
References
- https://github.com/jpadilla/pyjwt/security/advisories/GHSA-ffqj-6fqr-9h24
- https://nvd.nist.gov/vuln/detail/CVE-2022-29217
- https://github.com/jpadilla/pyjwt/commit/9c528670c455b8d948aff95ed50e22940d1ad3fc
- https://github.com/jpadilla/pyjwt
- https://github.com/jpadilla/pyjwt/releases/tag/2.4.0
- https://github.com/pypa/advisory-database/tree/main/vulns/pyjwt/PYSEC-2022-202.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5PK7IQCBVNLYJEFTPHBBPFP72H4WUFNX
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6HIYEYZRQEP6QTHT3EHH3RGFYJIHIMAO
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6HIYEYZRQEP6QTHT3EHH3RGFYJIHIMAO/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5PK7IQCBVNLYJEFTPHBBPFP72H4WUFNX/
- https://www.suse.com/security/cve/CVE-2022-29217.html
- https://security-tracker.debian.org/tracker/CVE-2022-29217
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.