bugtraq - Re: Possible bug in PHPNuke and other CMS

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Date: Fri, 4 Jun 2004 14:25:07 +0200
From: BlueRaven <blue@...enconsulting.it>
To: Bugtraq <bugtraq@...urityfocus.com>
Subject: Re: Possible bug in PHPNuke and other CMS

Il giorno 01/giu/04, alle 19:13, Luca Falavigna ha scritto:

> File permissions must always permit execution of php pages by web
> servers. And symlink is followed and code executed because web servers
> must have access to that directory and code. We can operate with php
> security options too and obtain the same result but what if we cannot
> modify them? We are uncovered!!!

Agreed, but I think that, in this case, the real problem would be an 
insecure configuration of the underlying webserver: any security-aware 
administrator should configure it to NOT follow symlinks or, at last, 
follow them if and only if the destination file belongs to the same 
user (SymLinksIfOwnerMatch directive in Apache).

--
BlueRaven

Did you know that, if you play a Windows 2000 CD backwards,
you will hear the voice of Satan? That's nothing!
If you play it forward, it will install Windows 2000!!!