Via the Phpwiki 1.3.x UpLoad feature some hackers from russia uploaded a php3 or php4 file, install a backdoor at port 8081 and have access to your whole disc and overtake the server. A url in the file is http://ccteam.ru/releases/c99shell The uploaded file has a php, php3 or php4 extension and looks like a gif to the mime magic. So apache usually accepts it. To fix this phpwiki issue at first move the lib/plugin/UpLoad.php file out of this directory. You can fix it by adding those two lines to your list of disallowed extensions: php3 php4 Currently only "php" is disallowed.
