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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-04-22T02:29:31

Updated: 2024-08-03T23:03:33.430Z

Reserved: 2021-04-22T00:00:00

Link: CVE-2021-31553

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-04-22T03:15:08.197

Modified: 2021-04-22T20:14:45.357

Link: CVE-2021-31553

cve-icon Redhat

No data.