When specifying specially formatted options to external MIME transformation, an attacker can execute any shell command restricted by privileges of httpd user.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/34710/PMASA-2004-2.txt
Source: https://packetstormsecurity.com/files/34710/phpMyAdmin-Security-Announcement-2004.2.html