Unrestricted file upload vulnerability in the CWebContact::doModel method in oc-includes/osclass/controller/contact.php in OSClass before 3.4.3 allows remote attackers to execute arbitrary PHP code by uploading a file with a PHP extension, then accessing it via a direct request to the file in an unspecified directory.
http://www.securityfocus.com/bid/71842
http://www.securityfocus.com/archive/1/534361/100/0/threaded
http://seclists.org/fulldisclosure/2014/Dec/134
http://packetstormsecurity.com/files/129777/Osclass-3.4.2-Shell-Upload.html
http://karmainsecurity.com/KIS-2014-16
http://blog.osclass.org/2014/10/09/osclass-3-4-3-ready-download/