PT-2021-23481 · Mediawiki+1 · Growthexperiments Extension+2

Urbanecm_Wmf · Published 2021-10-06 · Updated 2024-03-06 · CVE-2021-42042

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 GrowthExperiments extension in MediaWiki versions through 1.36.2

Description An issue was discovered in SpecialEditGrowthConfig in the GrowthExperiments extension. The growthexperiments-edit-config-error-invalid-title MediaWiki message was not being properly sanitized, allowing for the injection and execution of HTML and JavaScript.

Recommendations For MediaWiki versions through 1.36.2, update to a version that properly sanitizes the growthexperiments-edit-config-error-invalid-title MediaWiki message to prevent HTML and JavaScript injection. For the GrowthExperiments extension in MediaWiki versions through 1.36.2, ensure that the SpecialEditGrowthConfig properly sanitizes user input to prevent exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2021-3561

ALT-PU-2022-1199

BIT-MEDIAWIKI-2021-42042

CVE-2021-42042

Affected Products

Alt Linux

Growthexperiments Extension

Mediawiki

References · 6

• https://phabricator.wikimedia.org/T290692 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-mediawiki-2021-42042 · Vendor Advisory
• https://gerrit.wikimedia.org/r/q/Ibeb13d032ca044af53f6b2334e27b6b97b6f4e9f · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-42042 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-42042 · Security Note
• https://t.me/cibsecurity/30120 · Telegram Post