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Possible Duplicate:
Is it possible to execute PHP with extension file.php.jpg?
I accidentally left a fileupload to my site, and it got hacked (STUPID ME). The hacker had uploaded a file index.php.jpg with the uploader, and simply accessed my site (it was a shell99 script) with it, but I can’t understand why it will work. Someone smart enough to explain this?
Apache controls what file extensions can and cannot execute PHP. This can be controlled on a server-level, or a per-site level (such as with
.htaccess).By default, a
.jpgextension should not allow PHP execution. Perhaps the filename was reallyindex.jpg.phpand you have misread. However, in the event that the filename is reallyindex.php.jpg, you’ll need to look into all possible locations and lock-down your configuration to only allow.phpextensions to execute PHP.