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ubuntucveUbuntu.comUB:CVE-2022-24801
HistoryApr 04, 2022 - 12:00 a.m.

CVE-2022-24801

2022-04-0400:00:00
ubuntu.com
ubuntu.com
9

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

0.007 Low

EPSS

Percentile

81.0%

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.

Bugs

Notes

Author Note
rayveldkamp For focal and earlier, patch requires backporting major changes to how HTTP packets are buffered and processed which is intrusive and could have high risk of regression.

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

0.007 Low

EPSS

Percentile

81.0%