CVE-2022-34750

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Summary

CVECVE-2022-34750
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-06-28 13:15:00 UTC
Updated2022-07-07 12:39:00 UTC
DescriptionAn issue was discovered in MediaWiki through 1.38.1. The lemma length of a Wikibase lexeme is currently capped at a thousand characters. Unfortunately, this length is not validated, allowing much larger lexemes to be created, which introduces various denial-of-service attack vectors within the Wikibase and WikibaseLexeme extensions. This is related to Special:NewLexeme and Special:NewProperty.

Risk And Classification

Problem Types: CWE-770

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Mediawiki Mediawiki All All All All

References

ReferenceSourceLinkTags
gerrit.wikimedia.org/r/q/I8171bfef73e525d73efa60b407ce147130ea4742 MISC gerrit.wikimedia.org
gerrit.wikimedia.org/r/q/Id89a9b08e40f075d2d422cafd03668dff3ce7fc9 MISC gerrit.wikimedia.org
⚓ T308659 Validate lemma length in Special:NewLexeme(Alpha) and label/description/aliases length in Special:NewProperty MISC phabricator.wikimedia.org
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