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CVE

CWE

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CVE-2021-31553

Published: Apr 22, 2021

Modified: Aug 3, 2024

PUBLISHED

Description

An issue was discovered in the CheckUser extension for MediaWiki through 1.35.2. MediaWiki usernames with trailing whitespace could be stored in the cu_log database table such that denial of service occurred for certain CheckUser extension pages and functionality. For example, the attacker could turn off Special:CheckUserLog and thus interfere with usage tracking.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

https://phabricator.wikimedia.org/T275669

x_refsource_MISC

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667023

x_refsource_MISC

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667024

x_refsource_MISC

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667025

x_refsource_MISC

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027

x_refsource_MISC

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666963

x_refsource_MISC

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666964

x_refsource_MISC

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