source: https://www.securityfocus.com/bid/36006/info Papoo is prone to a vulnerability that lets attackers upload arbitrary files because the application fails to adequately validate user-supplied input. An attacker can exploit this vulnerability to upload arbitrary code and execute it in the context of the webserver process. This may facilitate unauthorized access or privilege escalation; other attacks are also possible. The following command will generate a file with a valid GIF header that runs the 'phpinfo()' function when requested: $ printf "GIF89a\x01\x00\x01\x00" > poc.php