Unrestricted Upload of File with Dangerous Type
edit.php in LabWiki 1.1 and earlier does not properly verify uploaded user files, which allows remote authenticated users to upload arbitrary PHP files via a PHP file with a .gif extension in the userfile parameter.
CWE-434 - Unrestricted Upload of File with dangerous type
'Unrestricted file upload with dangerous type' attacks involve an attacker uploading or transferring files of dangerous types to the server. The severity of such an attack depends upon the execution mechanism and the storage location of the uploaded file. Thus, it may range from simple defacement to arbitrary file execution, and complete system takeover.