From owner-freebsd-security Sat Sep 8 11:39:33 2001 Delivered-To: freebsd-security@freebsd.org Received: from r220-1.rz.RWTH-Aachen.DE (r220-1.rz.RWTH-Aachen.DE [134.130.3.31]) by hub.freebsd.org (Postfix) with ESMTP id 220A337B408 for ; Sat, 8 Sep 2001 11:39:30 -0700 (PDT) Received: from r220-1.rz.RWTH-Aachen.DE (relay2.RWTH-Aachen.DE [134.130.3.1]) by r220-1.rz.RWTH-Aachen.DE (8.10.1/8.11.3-2) with ESMTP id f88IdUc02461; Sat, 8 Sep 2001 20:39:30 +0200 (MEST) Received: from kawoserv.kawo2.rwth-aachen.de (root@kawoserv.kawo2.RWTH-Aachen.DE [134.130.180.1]) by r220-1.rz.RWTH-Aachen.DE (8.10.1/8.11.3/5) with ESMTP id f88IdTu02455; Sat, 8 Sep 2001 20:39:29 +0200 (MEST) Received: from fump.kawo2.rwth-aachen.de (root@fump.kawo2.rwth-aachen.de [134.130.181.148]) by kawoserv.kawo2.rwth-aachen.de (8.9.3/8.9.3) with ESMTP id UAA27236; Sat, 8 Sep 2001 20:39:28 +0200 Received: (from alex@localhost) by fump.kawo2.rwth-aachen.de (8.11.3/8.11.3) id f88IdZt54561; Sat, 8 Sep 2001 20:39:36 +0200 (CEST) (envelope-from alex) Date: Sat, 8 Sep 2001 20:39:35 +0200 From: Alexander Langer To: D J Hawkey Jr Cc: deepak@ai.net, freebsd-security@FreeBSD.ORG Subject: Re: Kernel-loadable Root Kits Message-ID: <20010908203935.B54535@fump.kawo2.rwth-aachen.de> References: <200109081052.f88AqRG30016@sheol.localdomain> <20010908141700.A53738@fump.kawo2.rwth-aachen.de> <20010908072542.A57605@sheol.localdomain> <20010908143231.A53801@fump.kawo2.rwth-aachen.de> <20010908074445.A77252@sheol.localdomain> <20010908181537.A840@ringworld.oblivion.bg> <20010908102816.B77764@sheol.localdomain> <20010908183728.D840@ringworld.oblivion.bg> <20010908105308.A78138@sheol.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20010908105308.A78138@sheol.localdomain>; from hawkeyd@visi.com on Sat, Sep 08, 2001 at 10:53:08AM -0500 X-PGP-Fingerprint: 44 28 CA 4C 46 5B D3 A8 A8 E3 BA F3 4E 60 7D 7F X-PGP-at: finger alex@big.endian.de X-Verwirrung: Dieser Header dient der allgemeinen Verwirrung. Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Thus spake D J Hawkey Jr (hawkeyd@visi.com): > Ah. Well then, as I wrote to Kris, the kernel has to deny KLD loading > altogether, it should be a build-time option, and it should have nothing > to over-ride this. > Or am I still being too simplistic? I haven't been using KLD- or LKM- You'd have to remove the whole kld code then, including all linker_file stuff. And, given that, you can still use /dev/mem to manipulate the kernel. Alex To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message