PT-2021-19415 · Mediawiki+1 · Mediawiki+2

Suffusion_Of_Yellow · Published 2021-04-22 · Updated 2024-03-06 · CVE-2021-31545

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions MediaWiki versions through 1.35.2 AbuseFilter extension for MediaWiki versions through 1.35.2

Description An issue in the AbuseFilter extension for MediaWiki allows the page recent contributors to leak the existence of certain deleted MediaWiki usernames, related to rev deleted.

Recommendations For MediaWiki versions through 1.35.2, update to a version that contains a fix for this issue. For AbuseFilter extension for MediaWiki versions through 1.35.2, update to a version that contains a fix for this issue.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

ALT-PU-2021-1991

ALT-PU-2021-2091

BIT-MEDIAWIKI-2021-31545

CVE-2021-31545

Affected Products

Alt Linux

Abusefilter Extension

Mediawiki

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-31545 · Security Note
• https://gerrit.wikimedia.org/r/q/I8d5ed9ca84282ee50832035af86123633fc88293 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-31545 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-mediawiki-2021-31545 · Vendor Advisory
• https://phabricator.wikimedia.org/T71367 · Note