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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-31553 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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/+/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/+/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/+/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/+/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/+/667025 Issue Tracking  Third Party Advisory 
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027 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 
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

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-31553
NVD Published Date:
04/21/2021
NVD Last Modified:
11/21/2024
Source:
MITRE