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Vulnerability DatabaseCVE-2020-25869

CVE-2020-25869: 
NixOS vulnerability analysis and mitigation

Overview

An information leak vulnerability (CVE-2020-25869) was discovered in MediaWiki before versions 1.31.10 and 1.32.x through 1.34.x before 1.34.4. The vulnerability relates to the handling of actor ID, which does not necessarily use the correct database or correct wiki, leading to potential information disclosure (MediaWiki Announce, CVE Details).

Technical details

The vulnerability stems from incorrect handling of actor IDs in the ActorMigration component. The issue specifically involves loading user data from incorrect databases and not ensuring the actor ID is used from the correct wiki (MediaWiki Announce).

Impact

The vulnerability could lead to information disclosure when handling user data across different wikis or databases in a MediaWiki installation (CVE Details).

Exploitability

The vulnerability requires access to a MediaWiki installation that uses multiple wikis or databases. No public exploits were known at the time of disclosure (MediaWiki Announce).

Mitigation and workarounds

The vulnerability was patched in MediaWiki versions 1.31.10 and 1.34.4. Users are advised to upgrade to these versions or later. For the 1.34.x series specifically, users were advised to upgrade to MediaWiki 1.35 as version 1.34 was approaching end-of-life (MediaWiki Announce).

Additional resources

Source: This report was generated using AI

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