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


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.3% (70th percentile)

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  • Snyk IDSNYK-DEBIAN10-MEDIAWIKI-1052808
  • published18 Dec 2020
  • disclosed18 Dec 2020

Introduced: 18 Dec 2020

CVE-2020-35480  (opens in a new tab)
CWE-200  (opens 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.

CVSS Scores

version 3.1