full-disclosure - Re: DNS Pointer

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Message-ID: <AANLkTimAn_dxGopN4F6W3+1f-aZcWsnxAAe6ecXbzw7Z@mail.gmail.com>
Date: Sat, 4 Dec 2010 12:12:42 +0530
From: Srinivas Naik <naik.srinu@...il.com>
To: Florian Weimer <fweimer@....de>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: DNS Pointer - DoS Exploit

Thanks for the input Mr. Weimer

I am planning to trigger this exploit and wandering how to construct such a
packet.

Ultimate goal is to make a client request which can cause this effect. If
possible, scripting ideas would be helpful.

Cheers,
Naik

On Fri, Dec 3, 2010 at 10:22 PM, Florian Weimer <fweimer@....de> wrote:

> * Srinivas Naik:
>
> > A DNS packet with a pointer loop is a protocol anomaly which some
> programs
> > may not handle gracefully.
>
> Try this:
>
> 00 00 00 00 00 01 00 00 00 00 00 00 C0 0C
>
> --
> Florian Weimer                <fweimer@....de>
> BFK edv-consulting GmbH       http://www.bfk.de/
> Kriegsstraße 100              tel: +49-721-96201-1
> D-76133 Karlsruhe             fax: +49-721-96201-99
>

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