Bug 1948643 (CVE-2021-30156) - CVE-2021-30156 mediawiki: Special:Contributions toolbar reveals existence of hidden users
Summary: CVE-2021-30156 mediawiki: Special:Contributions toolbar reveals existence of ...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2021-30156
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1947340 1948644
Blocks: 1948646
TreeView+ depends on / blocked
 
Reported: 2021-04-12 16:43 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-10-28 08:51 UTC (History)
11 users (show)

Fixed In Version: mediawiki 1.31.12, mediawiki 1.35.2
Doc Type: If docs needed, set a value
Doc Text:
In mediawiki package, the "Special:Contributions" functionality can leak information that a "hidden" user exists.
Clone Of:
Environment:
Last Closed: 2021-10-28 08:51:11 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2021-04-12 16:43:25 UTC 
An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Special:Contributions can leak that a "hidden" user exists.

Reference:
https://phabricator.wikimedia.org/T276306
Comment 1 Guilherme de Almeida Suckevicz 2021-04-12 16:45:27 UTC 
Created mediawiki tracking bugs for this issue:

Affects: fedora-all [bug 1948644]
Comment 3 Przemyslaw Roguski 2021-04-13 11:27:04 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.
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