From owner-freebsd-security@FreeBSD.ORG  Tue Dec  9 11:32:02 2003
Return-Path: <owner-freebsd-security@FreeBSD.ORG>
Delivered-To: freebsd-security@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 2DF6C16A4CE
	for <freebsd-security@freebsd.org>;
	Tue,  9 Dec 2003 11:32:02 -0800 (PST)
Received: from web12605.mail.yahoo.com (web12605.mail.yahoo.com
	[216.136.173.228])
	by mx1.FreeBSD.org (Postfix) with SMTP id 7592B43D1D
	for <freebsd-security@freebsd.org>;
	Tue,  9 Dec 2003 11:32:01 -0800 (PST)
	(envelope-from bj93542@yahoo.com)
Message-ID: <20031209193201.1585.qmail@web12605.mail.yahoo.com>
Received: from [128.226.68.47] by web12605.mail.yahoo.com via HTTP;
	Tue, 09 Dec 2003 11:32:01 PST
Date: Tue, 9 Dec 2003 11:32:01 -0800 (PST)
From: Dorin H <bj93542@yahoo.com>
To: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
In-Reply-To: <200312081646.hB8GkQIX035167@khavrinen.lcs.mit.edu>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
cc: freebsd-security@freebsd.org
Subject: Re: possible compromise or just misreading logs
X-BeenThere: freebsd-security@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Security issues [members-only posting]
	<freebsd-security.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-security>,
	<mailto:freebsd-security-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-security>
List-Post: <mailto:freebsd-security@freebsd.org>
List-Help: <mailto:freebsd-security-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-security>,
	<mailto:freebsd-security-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 09 Dec 2003 19:32:02 -0000


--- Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
wrote:
> <<On Mon, 8 Dec 2003 08:04:28 -0800 (PST), Roger
> Marquis <marquis@roble.com> said:
> 
> > Wouldn't effect tripwire.  In addition to MD5
> you'd need to spoof
> > snefru, crc32, crc16, md4, md2, sha, and haval,
> and you''d have to
> > spoof them for, at a minimum, the tripwire binary
> and its database
> > file(s).
> 
> Trivial -- all you have to do is keep backup copies
> of all the files
> replaced, and have the kernel redirect tripwire's
> access to the
> originals.
> 
> -GAWollman
> 
Of course, once somebody modifies your kernel, you
don't own the machine anymore . Boot a safe kernel:)
/Dorin.

__________________________________
Do you Yahoo!?
New Yahoo! Photos - easier uploading and sharing.
http://photos.yahoo.com/