Wikimedia MediaWiki Incorrect Access Control vulnerability in mediawiki/core
Summary
CVE-2019-12468: Wikimedia MediaWiki Incorrect Access Control vulnerability. Affects mediawiki/core across 4 version ranges.
>= 1.27.0, < 1.27.6
>= 1.30.0, < 1.30.2
>= 1.31.0, < 1.31.2
>= 1.32.0, < 1.32.2
Fixed in 4 releases; the minimum fixed version depends on the release line you run. How to fix ↓
Also tracked for
- mediawiki · Debian:11
The same CVE-2019-12468 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
MediaWiki is a free and open-source wiki software used by Wikimedia projects and many other websites. It provides a platform for collaborative editing and managing of content. The vulnerability affects versions 1.27.0 through 1.32.1 of the mediawiki/core package.
Vulnerability Detail
The vulnerability is an Incorrect Access Control issue that allows an attacker to bypass re-authentication by directly POSTing to Special:ChangeEmail. This can potentially lead to an account takeover, enabling unauthorized access to user accounts.
How To Fix
Fixed versions by release line
The minimum fixed version depends on the release line you run.
-
>= 1.27.0, < 1.27.61.27.6composer require mediawiki/core:1.27.6 -
>= 1.30.0, < 1.30.21.30.2composer require mediawiki/core:1.30.2 -
>= 1.31.0, < 1.31.21.31.2composer require mediawiki/core:1.31.2 -
>= 1.32.0, < 1.32.21.32.2composer require mediawiki/core:1.32.2
Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →
Workaround
There is no known workaround for this vulnerability. It is recommended to apply the fix by upgrading to a fixed version of the mediawiki/core package.
Conclusion
The Wikimedia MediaWiki Incorrect Access Control vulnerability in mediawiki/core allows for potential account takeover. It is crucial to upgrade to a fixed version of the package to mitigate the risk. For further support on vulnerability remediation, contact DevNack.com.
See every vulnerability recorded for mediawiki/core →
FAQ
The vulnerability allows for potential account takeover, enabling unauthorized access to user accounts.
You can use Vulert's playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities using composer.lock.
No, only versions 1.27.0 through 1.32.1 are affected. Later versions have been fixed.
No, there is no known workaround. It is recommended to upgrade to a fixed version.
The CVSS score of this vulnerability is 9.8, indicating a critical severity.
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