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MediaWiki: Allocation of Resources Without Limits or Throttling (CVE-2022-34750)

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MediaWiki: Allocation of Resources Without Limits or Throttling (CVE-2022-34750)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
06/28/2022
Created
07/16/2022
Added
07/11/2022
Modified
07/11/2022

Description

An 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.

Solution(s)

  • mediawiki-upgrade-latest

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