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MediaWiki: Unquoted Search Path or Element (CVE-2021-31553)

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MediaWiki: Unquoted Search Path or Element (CVE-2021-31553)

Severity
6
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:P)
Published
04/22/2021
Created
04/27/2021
Added
04/26/2021
Modified
04/26/2021

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.

Solution(s)

  • mediawiki-upgrade-latest

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