full-disclosure - Re: Exploiting Microsoft dynamic Dns updates

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Message-ID: <1x8u2dh7c6nhy$.dlg@syneticon.de>
Date: Tue, 3 Apr 2007 09:55:15 +0200
From: Denis Jedig <dj@...eticon.de>
To: full-disclosure@...ts.grok.org.uk
Cc: bugtraq@...urityfocus.com
Subject: Re: Exploiting Microsoft dynamic Dns updates

On Thu, 22 Mar 2007 11:35:18 +0100 Andres Tarasco wrote:

> By default, most Microsoft DNS servers integrated with active directory allow
> insecure dynamic updates for dns records.

This statement is way too broad. Creating an AD-integrated zone in Windows
Server 2003 does create a "secure updates only" zone by default. You can
influence this behavior in the zone creation wizard though.

> dnsfun exploits that weak configuration and allows remote users to modify dns records.

I am not sure if I do see the point in rewriting nsupdate from bindtools. I
am also quite uncertain if this really might count as a "hacker" or
"security" tool of any kind.

-- 
Denis Jedig
syneticon networks GbR             http://syneticon.net/service/

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