Bug 2247805 (CVE-2023-45362)

Summary:	CVE-2023-45362 mediawiki: diff-multi-sameuser ("X intermediate revisions by the same user not shown") ignores username suppression
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
Target Milestone:	---
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Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2247806
Bug Blocks:	2247807

Description Guilherme de Almeida Suckevicz 2023-11-03 14:53:24 UTC

An issue was discovered in DifferenceEngine.php in MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. diff-multi-sameuser (aka "X intermediate revisions by the same user not shown") ignores username suppression. This is an information leak.

Reference:
https://phabricator.wikimedia.org/T341529

Comment 1 Guilherme de Almeida Suckevicz 2023-11-03 14:53:37 UTC

Created mediawiki tracking bugs for this issue:

Affects: fedora-all [bug 2247806]