[Fedora-php-devel-list] security bug with how PHP is added as an Apache handler

[Joe Orton]

On Mon, Oct 13, 2008 at 02:59:31PM +0100, Kae Verens wrote:
> The conf.d/php.conf file attaches .php files to its handler like this:
> AddHandler php5-script .php

This is a feature, which allows MultiViews to work properly.

> This means that a web application which allows people to upload files  
> (images, for example), but not PHP scripts, can be circumvented by  
> naming the script somescript.php.notphp and then uploading it.

A webapp which:

a) allows users to upload files with arbitrary filenames, and
b) makes such file immediately publicly-accessible

is broken and insecure.  Changing the default httpd configuration as you 
suggest won't make it secure.

Regards, Joe