Bug 2009511 (CVE-2021-41799) - CVE-2021-41799 mediawiki: ApiQueryBacklinks can cause a full table scan and as a result DoS
Summary: CVE-2021-41799 mediawiki: ApiQueryBacklinks can cause a full table scan and a...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2021-41799
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: 2010201
Blocks: 2009518
TreeView+ depends on / blocked
 
Reported: 2021-09-30 20:04 UTC by Pedro Sampaio
Modified: 2021-10-19 15:18 UTC (History)
12 users (show)

Fixed In Version: mediawiki 1.31.16, mediawiki 1.35.4, mediawiki 1.36.2
Doc Type: If docs needed, set a value
Doc Text:
When processing ApiQueryBacklinks, the full db table scan might be initiated what can cause resource exhaustion and in a consequence the denial of service (DoS).
Clone Of:
Environment:
Last Closed: 2021-10-02 00:21:12 UTC
Embargoed:

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Description Pedro Sampaio 2021-09-30 20:04:14 UTC 
A flaw was found in Mediawiki before 1.31.16, 1.35.4 and 1.36.2. An improper database query in ApiQueryBacklinks may lead to a full table scan leading to exposure of confidential information.

References:

https://lists.wikimedia.org/hyperkitty/list/mediawiki-announce@lists.wikimedia.org/message/2IFS5CM2YV4VMSODPX3J2LFHKSEWVFV5/
https://phabricator.wikimedia.org/T290379
Comment 1 juneau 2021-10-01 14:25:21 UTC 
OSD affected/ooss.
Comment 2 Product Security DevOps Team 2021-10-02 00:21:12 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-41799
Comment 3 Przemyslaw Roguski 2021-10-04 07:46:41 UTC 
Created mediawiki tracking bugs for this issue:

Affects: fedora-all [bug 2010201]
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