Unrestricted file upload vulnerability in mods/_core/properties/lib/course.inc.php in ATutor before 2.2 patch 6 allows remote authenticated users to execute arbitrary PHP code by uploading a file with a PHP extension as a customicon for a new course, then accessing it via a direct request to the file in content/.
http://www.securityfocus.com/archive/1/536834/100/0/threaded
http://update.atutor.ca/patch/2_2/2_2-6/patch.xml
http://seclists.org/fulldisclosure/2015/Nov/10
http://packetstormsecurity.com/files/134215/ATutor-2.2-File-Upload.html