CVE-2022-2255

Publication date 22 July 2022

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A vulnerability was found in mod_wsgi. The X-Client-IP header is not removed from a request from an untrusted proxy, allowing an attacker to pass the X-Client-IP header to the target WSGI application because the condition to remove it is missing.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
mod-wsgi	22.10 kinetic	Fixed 4.9.0-1ubuntu1
	22.04 LTS jammy	Fixed 4.9.0-1ubuntu0.1
	20.04 LTS focal	Fixed 4.6.8-1ubuntu3.1
	18.04 LTS bionic	Fixed 4.5.17-1ubuntu1.1
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
mod-wsgi	Upstream: af3c0c2

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	High
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

Related Ubuntu Security Notices (USN)

USN-5551-1
mod-wsgi vulnerability
4 August 2022