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Improper Input Validation Affecting mediawiki package, versions <1:1.35.1-1

0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    EPSS 0.22% (61st percentile)
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NVD
5.3 medium
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Red Hat
5.3 medium

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  • Snyk ID SNYK-DEBIAN11-MEDIAWIKI-1052794
  • published 18 Dec 2020
  • disclosed 18 Dec 2020
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Introduced: 18 Dec 2020

CVE-2020-35477 Open this link in a new tab
CWE-20 Open this link in a new tab

How to fix?

Upgrade Debian:11 mediawiki to version 1:1.35.1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mediawiki package and not the mediawiki package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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).