bugtraq - Re: phpBB 2.0.12 Session Handling Administrator Authentication Bypass -SIMPLIFIED-

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Date: Mon, 07 Mar 2005 18:21:00 +0100
From: Matthias <admin@...i.de>
To: bugtraq@...urityfocus.com
Subject: Re: phpBB 2.0.12 Session Handling Administrator Authentication Bypass
    -SIMPLIFIED-


Wesley aka PPC wrote:
> 
> -----------------------------------
> 
>    phpBB 2.0.12 Session Handling
>    Administrator Authentication
>    Bypass EXPLOIT -SIMPLIFIED-
>                - By PPC^Rebyte
> 
> -----------------------------------
> 
...
> 3* Preparation
> ______________
> 
> 1. Register at forum?
> 
> 2. Log in with account
>    + UNCHECK "Log in automatically"
> 
...

you do not need to register and login, if you browse on a forum
a ANONYMOUS (id=0) Session is opened and a Cookie created.

Now you must delete the phpbb2_sid cookie and write the exploit
code in the phpbb2_data cookie.

So you don't must login.