CVE-2021-36127 Information

Description

An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. The Special:GlobalUserRights page provided search results which for a suppressed MediaWiki user were different than for any other user thus easily disclosing suppressed accounts (which are supposed to be completely hidden).

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Reference

https://phabricator.wikimedia.org/T285190 https://gerrit.wikimedia.org/r/q/I4e4dbcad61e1d4f6fd8b038bf63d19c69081a8ec

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

4.3