CVE-2021-31553

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Summary

CVECVE-2021-31553
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-04-22 03:15:00 UTC
Updated2021-04-22 20:14:00 UTC
DescriptionAn 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.

Risk And Classification

Problem Types: CWE-428

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Mediawiki Mediawiki All All All All

References

ReferenceSourceLinkTags
gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667025 MISC gerrit.wikimedia.org
gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666963 MISC gerrit.wikimedia.org
gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667023 MISC gerrit.wikimedia.org
gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667024 MISC gerrit.wikimedia.org
gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027 MISC gerrit.wikimedia.org
gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666964 MISC gerrit.wikimedia.org
⚓ T275669 Checkuser stores users to cu_log with trailing spaces, allowing all CUs to turn off Special:CheckuserLog at will MISC phabricator.wikimedia.org
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