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CVE-2021-31553 Detail

Current 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.

View Analysis Description


CVSS 3.x Severity and Metrics:

Base Score:  6.5 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666963 Issue Tracking  Third Party Advisory 
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666964 Issue Tracking  Third Party Advisory 
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667023 Issue Tracking  Third Party Advisory 
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667024 Issue Tracking  Third Party Advisory 
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667025 Issue Tracking  Third Party Advisory 
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027 Issue Tracking  Third Party Advisory 
https://phabricator.wikimedia.org/T275669 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-428 Unquoted Search Path or Element cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

1 change records found show changes

Quick Info

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