CVE-2022-24801

NameCVE-2022-24801
DescriptionTwisted 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2991-1
Debian Bugs1009030

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
twisted (PTS)buster18.9.0-3+deb10u1fixed
buster (security)18.9.0-3+deb10u2fixed
bullseye20.3.0-7+deb11u1fixed
bookworm22.4.0-4fixed
sid, trixie24.3.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
twistedsourcestretch16.6.0-2+deb9u3DLA-2991-1
twistedsourcebuster18.9.0-3+deb10u1
twistedsourcebullseye20.3.0-7+deb11u1
twistedsource(unstable)22.4.0-11009030

Notes

https://github.com/twisted/twisted/security/advisories/GHSA-c2jg-hw38-jrqq
https://github.com/twisted/twisted/releases/tag/twisted-22.4.0rc1
https://github.com/twisted/twisted/commit/592217e951363d60e9cd99c5bbfd23d4615043ac (twisted-22.04.0rc1)

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