PT-2021-3354 · Mediawiki+1 · Mediawiki+1

Grunny · Published 2021-04-06 · Updated 2024-03-06 · CVE-2021-30154

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 prior to 1.31.12 MediaWiki versions 1.32.x through 1.35.x before 1.35.2

Description An issue in MediaWiki leads to XSS due to the output of mediastatistics-header-* messages in HTML unescaped on Special:NewFiles. This could allow a remote attacker to impact the confidentiality and integrity of protected information.

Recommendations For MediaWiki versions prior to 1.31.12, update to version 1.31.12 or later. For MediaWiki versions 1.32.x through 1.35.x before 1.35.2, update to version 1.35.2 or later. As a temporary workaround, consider restricting access to the Special:NewFiles page until a patch is available.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2021-1712

ALT-PU-2021-2091

BDU:2021-03174

BIT-MEDIAWIKI-2021-30154

CVE-2021-30154

DSA-4889-1

Affected Products

Alt Linux

Mediawiki

References · 22

• 🔥 https://phabricator.wikimedia.org/T278014 · Exploit
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE · Vendor Advisory
• https://debian.org/security/2021/dsa-4889 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-30154 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-30154 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-30154 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4889-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30154 · Security Note
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-30154 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-mediawiki-2021-30154 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03174 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-30154 · Vendor Advisory