CVE-2022-29903 : Security Advisory and Response

The Private Domains extension for MediaWiki through version 1.37.2 allows CSRF for editing pages that store the extension's configuration. An attacker needs to trigger a POST request to Special:PrivateDomains.

Understanding CVE-2022-29903

This CVE involves a vulnerability in the Private Domains extension for MediaWiki, enabling Cross-Site Request Forgery (CSRF) attacks.

What is CVE-2022-29903?

The CVE-2022-29903 vulnerability affects MediaWiki's Private Domains extension up to version 1.37.2, creating a CSRF risk for editing configuration pages.

The Impact of CVE-2022-29903

The vulnerability allows an attacker to manipulate the extension's configuration through a crafted POST request to Special:PrivateDomains, potentially leading to unauthorized modifications.

Technical Details of CVE-2022-29903

Here are the technical details related to CVE-2022-29903:

Vulnerability Description

The flaw in the Private Domains extension permits CSRF attacks on configuration pages when a specific POST request is initiated.

Affected Systems and Versions

MediaWiki versions up to 1.37.2 with the Private Domains extension installed are vulnerable to this exploit.

Exploitation Mechanism

By triggering a POST request to Special:PrivateDomains, threat actors can maliciously edit the extension's configuration, posing a security risk.

Mitigation and Prevention

To secure systems against CVE-2022-29903, follow these essential steps:

Immediate Steps to Take

Disable the Private Domains extension if not essential.
Monitor for any unauthorized changes made to configurations.

Long-Term Security Practices

Regularly update MediaWiki and its extensions to patched versions.
Implement strong CSRF protection mechanisms in the application.

Patching and Updates

Stay informed about security patches released by MediaWiki for the Private Domains extension to address the vulnerability.