Critical phpwiki c99shell exploit
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.