bugtraq - Critical phpwiki c99shell exploit

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Date: 12 Apr 2007 13:14:14 -0000
From: rurban@...ay.at
To: bugtraq@...urityfocus.com
Subject: 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.