PT-2021-23483 · Mediawiki+1 · Mediawiki+1

Urbanecm_Wmf · Published 2021-10-06 · Updated 2024-03-06 · CVE-2021-42044

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions MediaWiki versions through 1.36.2

Description An issue was discovered in the Mentor dashboard in the GrowthExperiments extension where certain MediaWiki messages were not properly sanitized. This allowed for the injection and execution of HTML and JavaScript, specifically affecting the growthexperiments-mentor-dashboard-mentee-overview-add-filter-total-edits-headline, growthexperiments-mentor-dashboard-mentee-overview-add-filter-starred-headline, growthexperiments-mentor-dashboard-mentee-overview-info-text, growthexperiments-mentor-dashboard-mentee-overview-info-legend-headline, and growthexperiments-mentor-dashboard-mentee-overview-active-ago messages.

Recommendations For MediaWiki versions through 1.36.2, ensure that the MediaWiki messages are properly sanitized to prevent HTML and JavaScript injection. As a temporary workaround, consider restricting access to the Mentor dashboard in the GrowthExperiments extension until a proper fix is applied.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2021-3561

ALT-PU-2022-1199

BIT-MEDIAWIKI-2021-42044

CVE-2021-42044

Affected Products

Alt Linux

Mediawiki

References · 5

• 🔥 https://phabricator.wikimedia.org/T289408 · Exploit
• https://gerrit.wikimedia.org/r/q/I858d55fb2eca9b50ac6ef5a6f2a7b2784f0fa0d6 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-mediawiki-2021-42044 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-42044 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-42044 · Security Note