CVE-2022-24801
Description
Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to version 22.4.0rc1, the Twisted Web HTTP 1.1 server, located in the `twisted.web.http` module, parsed several HTTP request constructs more leniently than permitted by RFC 7230. This non-conformant parsing can lead to desync if requests pass through multiple HTTP parsers, potentially resulting in HTTP request smuggling. Users who may be affected use Twisted Web's HTTP 1.1 server and/or proxy and also pass requests through a different HTTP server and/or proxy. The Twisted Web client is not affected. The HTTP 2.0 server uses a different parser, so it is not affected. The issue has been addressed in Twisted 22.4.0rc1. Two workarounds are available: Ensure any vulnerabilities in upstream proxies have been addressed, such as by upgrading them; or filter malformed requests by other means, such as configuration of an upstream proxy.
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 | affected | | |
| sles | affected | | |
| debian | bookworm | fixed | 22.4.0-1 |
| debian | bullseye | fixed | 20.3.0-7+deb11u1 |
| debian | forky | fixed | 22.4.0-1 |
| debian | sid | fixed | 22.4.0-1 |
| debian | trixie | fixed | 22.4.0-1 |
References
- https://github.com/twisted/twisted/security/advisories/GHSA-c2jg-hw38-jrqq
- https://nvd.nist.gov/vuln/detail/CVE-2022-24801
- https://github.com/twisted/twisted/commit/592217e951363d60e9cd99c5bbfd23d4615043ac
- https://github.com/pypa/advisory-database/tree/main/vulns/twisted/PYSEC-2022-195.yaml
- https://github.com/twisted/twisted
- https://github.com/twisted/twisted/releases/tag/twisted-22.4.0rc1
- https://lists.debian.org/debian-lts-announce/2022/05/msg00003.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://www.suse.com/security/cve/CVE-2022-24801.html
- https://security-tracker.debian.org/tracker/CVE-2022-24801
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.