source: http://www.securityfocus.com/bid/64705/info

The Aclsfgpl component for Joomla! is prone to a vulnerability that lets attackers upload arbitrary files. The issue occurs because the application fails to adequately sanitize user-supplied input.

An attacker may leverage this issue to upload arbitrary files to the affected computer; this can result in arbitrary code execution within the context of the vulnerable application. 

http://www.example.com/index.php?option=com_aclsfgpl&Itemid=[num]&ct=servs1&md=add_form