CVE-2021-41118 Information

Description

The DynamicPageList3 extension is a reporting tool for MediaWiki listing category members and intersections with various formats and details. In affected versions unsanitised input of regular expression date within the parameters of the DPL parser function allowed for the possibility of ReDoS (Regex Denial of Service). This has been resolved in version 3.3.6. If you are unable to update you may also set $wgDplSettings['functionalRichness'] = 0; or disable DynamicPageList3 to mitigate.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://github.com/Universal-Omega/DynamicPageList3/commit/2c04dafb37a14d9ccfe070f53e7f11bbca0156e7 https://github.com/Universal-Omega/DynamicPageList3/releases/tag/3.3.6 https://github.com/Universal-Omega/DynamicPageList3/security/advisories/GHSA-8f24-q75c-jhf4

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5