From owner-freebsd-security@FreeBSD.ORG Mon Dec 8 08:46:40 2003 Return-Path: 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 880DE16A4CE for ; Mon, 8 Dec 2003 08:46:40 -0800 (PST) Received: from khavrinen.lcs.mit.edu (khavrinen.lcs.mit.edu [18.24.4.193]) by mx1.FreeBSD.org (Postfix) with ESMTP id CC42143FEC for ; Mon, 8 Dec 2003 08:46:27 -0800 (PST) (envelope-from wollman@khavrinen.lcs.mit.edu) Received: from khavrinen.lcs.mit.edu (localhost.nic.fr [IPv6:::1]) by khavrinen.lcs.mit.edu (8.12.9/8.12.9) with ESMTP id hB8GkQDa035170 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK CN=khavrinen.lcs.mit.edu issuer=SSL+20Client+20CA); Mon, 8 Dec 2003 11:46:26 -0500 (EST) (envelope-from wollman@khavrinen.lcs.mit.edu) Received: (from wollman@localhost) by khavrinen.lcs.mit.edu (8.12.9/8.12.9/Submit) id hB8GkQIX035167; Mon, 8 Dec 2003 11:46:26 -0500 (EST) (envelope-from wollman) Date: Mon, 8 Dec 2003 11:46:26 -0500 (EST) From: Garrett Wollman Message-Id: <200312081646.hB8GkQIX035167@khavrinen.lcs.mit.edu> To: Roger Marquis In-Reply-To: <20031208160428.DDF8FDAE9A@mx7.roble.com> References: <20031207200130.C4B1216A4E0@hub.freebsd.org> <20031208123501.GA87554@ergo.nruns.com> <20031208160428.DDF8FDAE9A@mx7.roble.com> X-Spam-Score: -19.8 () IN_REP_TO,QUOTED_EMAIL_TEXT,REFERENCES,REPLY_WITH_QUOTES X-Scanned-By: MIMEDefang 2.37 X-Mailman-Approved-At: Tue, 09 Dec 2003 07:43:38 -0800 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] List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Dec 2003 16:46:40 -0000 < 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