From owner-freebsd-amd64@FreeBSD.ORG  Tue May 17 10:32:12 2005
Return-Path: <owner-freebsd-amd64@FreeBSD.ORG>
Delivered-To: freebsd-amd64@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id D795216A4CE
	for <freebsd-amd64@freebsd.org>; Tue, 17 May 2005 10:32:12 +0000 (GMT)
Received: from cannabis.dataforce.net (cannabis.dataforce.net [195.42.160.18])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 8472343DC4
	for <freebsd-amd64@freebsd.org>; Tue, 17 May 2005 10:32:12 +0000 (GMT)
	(envelope-from georgi@cannabis.dataforce.net)
Received: by cannabis.dataforce.net (Postfix, from userid 12794)
	id 505581429A; Tue, 17 May 2005 14:32:11 +0400 (MSD)
Date: Tue, 17 May 2005 13:32:39 +0300
From: Georgi Guninski <guninski@guninski.com>
To: freebsd-amd64@freebsd.org
Message-ID: <20050517103239.GE5188@sivokote.iziade.m$>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
header: best read with a sniffer
User-Agent: Mutt/1.5.6i
Subject: can someone please try this qmail exploit?
X-BeenThere: freebsd-amd64@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Porting FreeBSD to the AMD64 platform <freebsd-amd64.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-amd64>,
	<mailto:freebsd-amd64-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-amd64>
List-Post: <mailto:freebsd-amd64@freebsd.org>
List-Help: <mailto:freebsd-amd64-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-amd64>,
	<mailto:freebsd-amd64-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 17 May 2005 10:32:13 -0000


can some please try a qmail-smtpd remote exploit on freebsd 5.4 amd64?

what is needed:
- freebsd 5.4 amd64
- 13GB virtual memory - ram + swap (probably less will do, not quite sure)
- vanilla djb qmail - http://cr.yp.to/qmail.html (an easy way to
  install it is to install qmail from ports, then change in
conf-groups "nofiles" to "qnofiles" and build and install vanilla
qmail. vanilla qmail is important.

how to reproduce:

donwload the perl proggie:
http://www.guninski.com/where_do_you_want_billg_to_go_today_4.html#qmlong-pubvvv7.pl

(qmlong-pubvvv7.pl)

start it on localhost.

attach a gdb to qmail-smtpd and wait.

if you get:
Program received signal SIGTRAP, Trace/breakpoint trap.
0x000000000050cbac in ?? ()
(gdb) x/i $rip
0x50cbac:       int3   
(gdb)

then the exploit works.

notes: 
a lot of memory is used, so a production machine may be lagged.
on an athlon64 2800+ with 1.5G ram the exploit takes about 1 hour.
it was reported that with 8G ram the exploit takes about 10 minutes.
there are flames on the qmail mailing list if this is a bug or not.


thanks.

-- 
georgi