PT-2021-23482 · Mediawiki+2 · Mediawiki+2

Matmarex · Published 2021-10-06 · Updated 2024-03-06 · CVE-2021-42043

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

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

Description An issue was discovered in Special:MediaSearch in the MediaSearch extension. The suggestion text, a parameter to mediasearch-did-you-mean, was not being properly sanitized, allowing for the injection and execution of HTML and JavaScript via the intitle: search operator within the query.

Recommendations For MediaWiki versions through 1.36.2, update to a version that includes the fix for this issue. For the MediaSearch extension versions through 1.36.2, update to a version that includes the fix for this issue. As a temporary workaround, consider restricting access to the Special:MediaSearch page until a patch is available. Avoid using the intitle: search operator in the query until the issue is resolved.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2021-3561

ALT-PU-2022-1199

BIT-MEDIAWIKI-2021-42043

CVE-2021-42043

Affected Products

Alt Linux

Mediasearch Extension

Mediawiki

References · 6

• https://gerrit.wikimedia.org/r/q/If64eb5842237c92290d07ebc3fe14710d9de3fc2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-42043 · Security Note
• https://osv.dev/vulnerability/BIT-mediawiki-2021-42043 · Vendor Advisory
• https://phabricator.wikimedia.org/T291600 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-42043 · Vendor Advisory
• https://t.me/cibsecurity/30125 · Telegram Post