CVE-2020-35477 Information

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Description

MediaWiki before 1.35.1 blocks legitimate attempts to hide log entries in some situations. If one sets MediaWiki:Mainpage to Special:MyLanguage/Main Page visits a log entry on Special:Log and toggles the \Change visibility of selected log entries\ checkbox (or a tags checkbox) next to it there is a redirection to the main page’s action=historysubmit (instead of the desired behavior in which a revision-deletion form appears).

CVSS Vector

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

Reference

https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html https://phabricator.wikimedia.org/T205908 https://www.debian.org/security/2020/dsa-4816 https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html https://lists.fedoraproject.org/archives/list/[email protected]/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

LOW

Base Score

NONE

Base Severity

5.3