A vulnerability has been reported in YaBB, which can be exploited by malicious users and malicious people to gain escalated privileges.

Input passed to certain profile form fields is not properly sanitised before being written to the profile data (.vars) file for a user. This can be exploited to inject special characters and gain forum administrator privileges.

This can further be exploited to execute arbitrary Perl code by modifying the forum templates.

The vulnerability is reported in version 2.1. Other versions may also be affected.

Solution
Apply patch.
Further details available in Customer Area

Provided and/or discovered by
Peter Vreugdenhil, reported via iDefense.

Changelog
Further details available in Customer Area

Original Advisory
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=538

Deep Links
Links available in Customer Area