VulnerabilityModified

CVE-2022-24801

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.

HIGH 8.1EPSS 2.80%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1: 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 2.80% probability · 86th percentile
CISA KEV: Not listed
Weakness: CWE-444
Affected: twisted/twisted · debian/debian linux · fedoraproject/fedora · oracle/zfs storage appliance kit
Source: security-advisories@github.com

References

https://github.com/twisted/twisted/commit/592217e951363d60e9cd99c5bbfd23d4615043acPatch, Third Party Advisory
https://github.com/twisted/twisted/releases/tag/twisted-22.4.0rc1Release Notes, Third Party Advisory
https://github.com/twisted/twisted/security/advisories/GHSA-c2jg-hw38-jrqqThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00003.htmlMailing List, Third Party Advisory
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://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
https://github.com/twisted/twisted/commit/592217e951363d60e9cd99c5bbfd23d4615043acPatch, Third Party Advisory
https://github.com/twisted/twisted/releases/tag/twisted-22.4.0rc1Release Notes, Third Party Advisory
https://github.com/twisted/twisted/security/advisories/GHSA-c2jg-hw38-jrqqThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00003.htmlMailing List, Third Party Advisory
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://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.