[21897] in bugtraq
Re: UDP packet handling weird behaviour of various operating systems
daemon@ATHENA.MIT.EDU (Michal Zalewski)
Thu Jul 26 18:10:15 2001
Date: Wed, 25 Jul 2001 18:49:20 -0400 (EDT)
From: Michal Zalewski <lcamtuf@gis.net>
To: Stefan Laudat <stefan@mail.allianztiriac.ro>
Cc: bugtraq@securityfocus.com
In-Reply-To: <20010726014337.A31276@allianztiriac.ro>
Message-ID: <Pine.LNX.4.21.0107251847250.747-100000@nimue.bos.bindview.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
On Thu, 26 Jul 2001, Stefan Laudat wrote:
> Believe it or not, I got a OpenBSD-2.9 current hanged up out there.
> I'll test further systems. What amazed me was different types of
> system reaction with different drivers at different links.
Maybe there's something wrong with your approach or test environment. As
long as there's no comsat or any other service running on this port, and
you do not actually trash your link layer, there's absolutely no reason
for this to succeed. It is normal, system-generated UDP packet, and
apparently, as expected, has no impact on boxes I can reach from there...
--
_____________________________________________________
Michal Zalewski [lcamtuf@bos.bindview.com] [security]
[http://lcamtuf.coredump.cx] <=-=> bash$ :(){ :|:&};:
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