PT-2021-3351 · Mediawiki+1 · Mediawiki+1

Xzonn · Published 2021-04-09 · Updated 2024-03-06 · CVE-2021-30155

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 1.31.12 and earlier MediaWiki versions 1.32.x through 1.35.x before 1.35.2

Description The issue is related to the ContentModelChange function in MediaWiki, which lacks proper authorization. This allows a remote attacker to potentially impact the integrity of protected information by creating and setting the content model of a nonexistent page without correct permissions.

Recommendations For MediaWiki versions 1.31.12 and earlier, 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 ContentModelChange function to minimize the risk of exploitation.

Exploit

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

ALT-PU-2021-1712

ALT-PU-2021-2091

BDU:2021-03168

BIT-MEDIAWIKI-2021-30155

CVE-2021-30155

DLA-2648-1

DLA-2648-2

DSA-4889-1

MGASA-2021-0218

Affected Products

Alt Linux

Mediawiki

References · 28

• 🔥 https://phabricator.wikimedia.org/T270988 · 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://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/BIT-mediawiki-2021-30155 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2648-2 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2648-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2021-0218 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-30155 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03168 · Security Note
• https://security.gentoo.org/glsa/202107-40 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4889-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30155 · Security Note