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CVE-2022-39348

Published: 26 October 2022

Twisted is an event-based framework for internet applications. Started with version 0.9.4, when the host header does not match a configured host `twisted.web.vhost.NameVirtualHost` will return a `NoResource` resource which renders the Host header unescaped into the 404 response allowing HTML and script injection. In practice this should be very difficult to exploit as being able to modify the Host header of a normal HTTP request implies that one is already in a privileged position. This issue was fixed in version 22.10.0rc1. There are no known workarounds.

Notes

AuthorNote
mdeslaur
introduced by:
https://github.com/twisted/twisted/commit/f49041bb67792506d85aeda9cf6157e92f8048f4

Priority

Low

Cvss 3 Severity Score

5.4

Score breakdown

Status

Package Release Status
twisted
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needed)
bionic Needed

focal
Released (18.9.0-11ubuntu0.20.04.3)
jammy
Released (22.1.0-2ubuntu2.4)
trusty Needed

xenial Needs triage

lunar Not vulnerable
(22.4.0-4)
mantic Not vulnerable
(22.4.0-4)
upstream
Released (22.4.0-4)
Patches:
upstream: https://github.com/twisted/twisted/commit/f2f5e81c03f14e253e85fe457e646130780db40b

Severity score breakdown

Parameter Value
Base score 5.4
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Scope Changed
Confidentiality Low
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N