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CVE-2021-44858

Published: 20 December 2021

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. It is possible to use action=edit&undo= followed by action=mcrundo and action=mcrrestore to view private pages on a private wiki that has at least one page set in $wgWhitelistRead.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
mediawiki
Launchpad, Ubuntu, Debian
bionic Needed

focal Needed

hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy Not vulnerable
(1:1.35.5-1)
kinetic Not vulnerable
(1:1.35.5-1)
lunar Not vulnerable
(1:1.35.5-1)
mantic Not vulnerable
(1:1.35.5-1)
noble Not vulnerable
(1:1.35.5-1)
trusty Ignored
(end of standard support)
upstream
Released (1:1.35.5-1)
xenial Does not exist

Patches:
upstream: https://github.com/wikimedia/mediawiki/commit/7b0c94fb0be44be33393e34cf8bc73798105f78e
upstream: https://github.com/wikimedia/mediawiki/commit/5d5a3c0720520f75e723d3b5a37e793a6e674e4f

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N