CVE-2020-35625 : What You Need to Know

An issue was discovered in the Widgets extension for MediaWiki through 1.35.1 that could allow users to call static functions within classes via crafted HTML comments.

Understanding CVE-2020-35625

What is CVE-2020-35625?

This CVE identifies a vulnerability in the Widgets extension for MediaWiki that could be exploited by users with page editing permissions within the Widgets namespace.

The Impact of CVE-2020-35625

The vulnerability could enable unauthorized users to execute static functions within classes, potentially leading to unauthorized actions or data exposure.

Technical Details of CVE-2020-35625

Vulnerability Description

The issue allows any user with page editing rights in the Widgets namespace to call static functions within classes using crafted HTML comments.

Affected Systems and Versions

Product: MediaWiki
Versions affected: through 1.35.1

Exploitation Mechanism

Users with editing privileges in the Widgets namespace can exploit the vulnerability by inserting crafted HTML comments to call static functions within classes.

Mitigation and Prevention

Immediate Steps to Take

Apply the latest security patches provided by MediaWiki.
Restrict editing permissions within the Widgets namespace to trusted users.

Long-Term Security Practices

Regularly monitor and audit user permissions and activities within MediaWiki.
Educate users on secure coding practices and the risks of executing arbitrary functions.

Patching and Updates

Stay informed about security updates and patches released by MediaWiki.