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Information Exposure Affecting mediawiki package, versions <1:1.31.12-1~deb10u1

0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    EPSS 0.22% (60th 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-DEBIAN10-MEDIAWIKI-1052808
  • published 18 Dec 2020
  • disclosed 18 Dec 2020
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Introduced: 18 Dec 2020

CVE-2020-35480 Open this link in a new tab
CWE-200 Open this link in a new tab

How to fix?

Upgrade Debian:10 mediawiki to version 1:1.31.12-1~deb10u1 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:10 relevant fixed versions and status.

An issue was discovered in MediaWiki before 1.35.1. Missing users (accounts that don't exist) and hidden users (accounts that have been explicitly hidden due to being abusive, or similar) that the viewer cannot see are handled differently, exposing sensitive information about the hidden status to unprivileged viewers. This exists on various code paths.