CVE-2022-24801
twisted - security update
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.
How to fix CVE-2022-24801
To remediate CVE-2022-24801, upgrade the affected package to a fixed version below.
- —upgrade to 20.3.0-7+deb11u1 or later
- —upgrade to 16.6.0-2+deb9u3 or later
- —upgrade to 22.4.0 or later
- —upgrade to 592217e951363d60e9cd99c5bbfd23d4615043ac or later
Is CVE-2022-24801 being exploited?
Low — EPSS is 1.1%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 20.3.0-7+deb11u1
- from 0, < 16.6.0-2+deb9u3
- from 0, < 22.4.0
- from 0, < 592217e951363d60e9cd99c5bbfd23d4615043ac | from 0, < 22.4.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |