Bug 1946692 (CVE-2021-30157)

Summary:	CVE-2021-30157 mediawiki: XSS due to unescaped messages used in HTML on ChangesList pages
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aos-bugs, Axel.Thimm, bmontgom, eparis, jburrell, jokerman, mike, nstielau, puiterwijk, shurley, sponnaga
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	mediawiki 1.31.12, mediawiki 1.35.2	Doc Type:	If docs needed, set a value
Doc Text:	In mediawiki package on ChangesList special pages such as Special:RecentChanges and Special:Watchlist, some of the rcfilters-filter-* label messages are outputted in HTML unescaped, which could leading to Cross-site Scripting (XSS).	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-28 08:49:42 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1946693, 1947340, 1947420, 1947421
Bug Blocks:	1946702

Description Guilherme de Almeida Suckevicz 2021-04-06 16:55:32 UTC

An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. On ChangesList special pages such as Special:RecentChanges and Special:Watchlist, some of the rcfilters-filter-* label messages are output in HTML unescaped, leading to XSS.

Reference:
https://phabricator.wikimedia.org/T278058

Comment 1 Guilherme de Almeida Suckevicz 2021-04-06 16:55:50 UTC

Created mediawiki tracking bugs for this issue:

Affects: fedora-all [bug 1946693]

Comment 3 Przemyslaw Roguski 2021-04-07 13:15:00 UTC

External References:

https://phabricator.wikimedia.org/T278058

Comment 4 Przemyslaw Roguski 2021-04-08 09:16:04 UTC

Statement:

The mediawiki package was removed from OpenShift Container Platform (OCP) in version 4.3, therefore for OCP 4 has been marked as out of support scope.