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


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
1.51% (72nd percentile)

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  • Snyk IDSNYK-DEBIAN12-MEDIAWIKI-1553979
  • published18 Dec 2020
  • disclosed18 Dec 2020

Introduced: 18 Dec 2020

CVE-2020-35477  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Debian:12 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:12 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).

CVSS Base Scores

version 3.1