From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Willy Tarreau <willy@w.ods.org>
Cc: Paul Jakma <paul@clubi.ie>, Ville Hallivuori <vph@iki.fi>,
Toon van der Pas <toon@hout.vanvergehaald.nl>,
Wolfpaw - Dale Corse <admin@wolfpaw.net>,
kaukasoi@elektroni.ee.tut.fi,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified) Denial of Service Attack
Date: Tue, 14 Sep 2004 19:56:41 +0100 [thread overview]
Message-ID: <1095188200.17043.53.camel@localhost.localdomain> (raw)
In-Reply-To: <20040914194141.GF2780@alpha.home.local>
On Maw, 2004-09-14 at 20:41, Willy Tarreau wrote:
> Just wondering, I have not checked. Isn't the "must fragment" message
> supposed to embed part of the packet it couldn't send in return ?
You need to guess no more than for an RST attack, and furthermore in
some cases (buggy stacks) IPsec doesn't save you because the error is
from an untrusted midpoint. The proper response to such messages is to
turn off DF usage but not all stacks get it right
next prev parent reply other threads:[~2004-09-14 20:03 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <02a401c498e9$9167aff0$0300a8c0@s>
2004-09-12 17:29 ` Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified) Denial of Service Attack Wolfpaw - Dale Corse
2004-09-12 17:04 ` Alan Cox
2004-09-12 19:23 ` Toon van der Pas
2004-09-13 3:18 ` Paul Jakma
2004-09-13 3:30 ` Paul Jakma
2004-09-13 4:18 ` Willy Tarreau
2004-09-13 4:25 ` Paul Jakma
2004-09-13 19:07 ` Tonnerre
2004-09-13 19:18 ` Willy Tarreau
2004-09-13 19:25 ` Paul Jakma
2004-09-13 20:11 ` Ville Hallivuori
2004-09-14 14:55 ` Paul Jakma
2004-09-14 15:10 ` Alan Cox
2004-09-14 16:26 ` Paul Jakma
2004-09-14 16:09 ` Alan Cox
2004-09-14 17:17 ` Paul Jakma
2004-09-20 22:02 ` Florian Weimer
2004-09-21 2:14 ` Herbert Xu
2004-09-21 18:32 ` Florian Weimer
2004-09-21 19:56 ` David S. Miller
2004-09-21 20:04 ` Florian Weimer
2004-09-21 20:25 ` David S. Miller
2004-09-21 20:51 ` Florian Weimer
2004-09-14 19:41 ` Willy Tarreau
2004-09-14 18:56 ` Alan Cox [this message]
2004-09-20 22:03 ` Florian Weimer
2004-09-20 23:12 ` Alan Cox
[not found] <02bf01c498ff$b6512470$0300a8c0@s>
2004-09-12 19:42 ` Wolfpaw - Dale Corse
2004-09-12 19:53 ` Willy Tarreau
[not found] <02b001c498f6$7942bc50$0300a8c0@s>
2004-09-12 18:52 ` Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified)Denial " Wolfpaw - Dale Corse
2004-09-12 18:06 ` Alan Cox
[not found] <02b201c498f6$8bb92540$0300a8c0@s>
2004-09-12 18:40 ` Wolfpaw - Dale Corse
2004-09-12 18:01 ` Alan Cox
2004-09-12 19:48 ` Willy Tarreau
2004-09-13 6:59 ` Jurjen Oskam
[not found] <029201c498d8$dff156f0$0300a8c0@s>
2004-09-12 15:45 ` Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified) Denial " Wolfpaw - Dale Corse
2004-09-12 16:47 ` Petri Kaukasoina
2004-09-12 17:59 ` Willy Tarreau
2004-09-12 17:17 ` Alan Cox
2004-09-12 18:18 ` Willy Tarreau
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