PT-2021-23486 · Mediawiki+1 · Mediawiki+1

Urbanecm_Wmf · Published 2021-10-06 · Updated 2024-03-06 · CVE-2021-42047

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions MediaWiki versions prior to 1.36.2

Description An issue was discovered in the Growth extension in MediaWiki. On any Wiki with the Mentor Dashboard feature enabled, users can login with a mentor account and trigger an XSS payload, such as an alert, via Growthexperiments-mentor-dashboard-mentee-overview-no-js-fallback.

Recommendations For MediaWiki versions prior to 1.36.2, update to version 1.36.2 or later to resolve the issue. As a temporary workaround, consider disabling the Mentor Dashboard feature until a patch is available. Restrict access to the Growthexperiments-mentor-dashboard-mentee-overview-no-js-fallback endpoint to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2021-3561

ALT-PU-2022-1199

BIT-MEDIAWIKI-2021-42047

CVE-2021-42047

Affected Products

Alt Linux

Mediawiki

References · 6

• https://gerrit.wikimedia.org/r/c/mediawiki/extensions/GrowthExperiments/+/720088 · Vendor Advisory
• https://phabricator.wikimedia.org/T289063 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-mediawiki-2021-42047 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-42047 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-42047 · Security Note
• https://t.me/cibsecurity/50684 · Telegram Post