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Vulnerability DatabaseCVE-2023-51704

CVE-2023-51704: 
NixOS vulnerability analysis and mitigation

Overview

A cross-site scripting (XSS) vulnerability was discovered in MediaWiki before 1.35.14, 1.36.x through 1.39.x before 1.39.6, and 1.40.x before 1.40.2. The vulnerability exists in includes/logging/RightsLogFormatter.php, where group-*-member messages can result in XSS on Special:log/rights (NVD, Debian).

Technical details

The vulnerability stems from improper escaping of group-*-member messages on the Special:log/rights page. The issue was discovered in the RightsLogFormatter.php file where messages related to group memberships were not properly sanitized before being displayed. The vulnerability has been assigned a CVSS v3.1 Base Score of 6.1 (MEDIUM) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N (NVD, Wikimedia).

Impact

The vulnerability could allow attackers to execute cross-site scripting attacks through the user rights log. This could potentially lead to information disclosure and privilege escalation when exploited (Debian LTS).

Mitigation and workarounds

The vulnerability has been fixed in MediaWiki versions 1.35.14, 1.39.6, and 1.40.2. Users are recommended to upgrade to these or later versions. The fix involves adding proper HTML escaping to the affected messages in the RightsLogFormatter.php file (Wikimedia).

Additional resources

Source: This report was generated using AI

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