PT-2021-18636 · Mediawiki+1 · Mediawiki+1

Taavi · Published 2021-04-09 · Updated 2024-03-06 · CVE-2021-30156

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/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 1.35.1

Description An issue in MediaWiki allows Special:Contributions to leak the existence of a "hidden" user.

Recommendations For MediaWiki versions prior to 1.31.12, update to version 1.31.12 or later. For MediaWiki versions 1.32.x through 1.35.1, update to version 1.35.2 or later.

Exploit

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

ALT-PU-2021-1712

ALT-PU-2021-2091

BIT-MEDIAWIKI-2021-30156

CVE-2021-30156

Affected Products

Alt Linux

Mediawiki

References · 10

• 🔥 https://phabricator.wikimedia.org/T276306 · Exploit
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30156 · Security Note
• https://ubuntu.com/security/CVE-2021-30156 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-mediawiki-2021-30156 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-30156 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-30156 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-30156 · Vendor Advisory
• https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/63559cc944efeb514ba9e011c824c3698fb397f2%5E%21 · Note