Sky classroom file upload vulnerability-vulnerability warning-the black bar safety net

Brief description: Allow the upload of dangerous file type,this system is still a lot of Open the network course website, as shown in Figure, landing it, and now SkyDrive. Upload a PHP file, the web site didn't filter PHP file. ! 1 8-300x166. png ! 1 8-300x166. png ! 1 8-300x166. png After enteri...