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
6.8 Medium
CVSS2
Access Vector
NETWORK
Access 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
0.007 Low
EPSS
Percentile
80.5%
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:
+
or -
prefix.\n
) character.0x
.\t
).This non-conformant parsing can lead to desync if requests pass through multiple HTTP parsers, potentially resulting in HTTP request smuggling.
You may be affected if:
The specifics of the other HTTP parser matter. The original report notes that some versions of Apache Traffic Server and HAProxy have been vulnerable in the past. HTTP request smuggling may be a serious concern if you use a proxy to perform request validation or access control.
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 and later.
Other than upgrading Twisted, you could:
This issue was initially reported by Zhang Zeyu.
github.com/advisories/GHSA-c2jg-hw38-jrqq
github.com/pypa/advisory-database/tree/main/vulns/twisted/PYSEC-2022-195.yaml
github.com/twisted/twisted/commit/592217e951363d60e9cd99c5bbfd23d4615043ac
github.com/twisted/twisted/releases/tag/twisted-22.4.0rc1
github.com/twisted/twisted/security/advisories/GHSA-c2jg-hw38-jrqq
lists.debian.org/debian-lts-announce/2022/05/msg00003.html
lists.fedoraproject.org/archives/list/[email protected]/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/
lists.fedoraproject.org/archives/list/[email protected]/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/
nvd.nist.gov/vuln/detail/CVE-2022-24801
www.oracle.com/security-alerts/cpujul2022.html
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
6.8 Medium
CVSS2
Access Vector
NETWORK
Access 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
0.007 Low
EPSS
Percentile
80.5%