KLA10545
Multiple vulnerabilities in MediaWiki and extensions

Multiple serious vulnerabilities have been found in MediaWiki. Malicious users can exploit these vulnerabilities to bypass security restrictions, inject arbitrary code, cause denial of service or obtain sensitive information.

Below is a complete list of vulnerabilities

1. Unknown vulnerability can be exploited remotely via a specially designed SVG, PDF, password or entity manipuations;
2. XSS vulnerability in CheckUser extension can be exploited remotely via a specially designed request;
3. CSRF vulnerability in Scripunto extension can be exploited remotely via an unknown vectors;
4. XSS vulnerability can be exploited remotely via a specially designed JS or string;
5. Improper entities handle can be exploited remotely via a specially designed SVG file;
6. Incomplete blacklist can be exploited remotely via a specially designed XLink or SVG.

MediaWiki versions earlier than 1.19.24
MediaWiki 1.2x versions earlier than 1.23.9
MediaWiki 1.24.x versions earlier than 1.24.2

Update to the latest version.
Get MediaWiki