From owner-freebsd-security@FreeBSD.ORG Thu Nov 17 18:19:26 2011 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 91CD51065670 for ; Thu, 17 Nov 2011 18:19:26 +0000 (UTC) (envelope-from sidetripping@gmail.com) Received: from mail-yx0-f182.google.com (mail-yx0-f182.google.com [209.85.213.182]) by mx1.freebsd.org (Postfix) with ESMTP id 50E378FC12 for ; Thu, 17 Nov 2011 18:19:26 +0000 (UTC) Received: by yenl11 with SMTP id l11so2096756yen.13 for ; Thu, 17 Nov 2011 10:19:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=abupWgKiM8m/5N/TMHlXpcg6qflZdpg9R4Ty4xkiePk=; b=fgAF8RahFYwMbtZ750vL2UTBDP97Q6BTSqAaEu1oX/SzD2SB7d+Hha1qWg7ejOQ+Vw 9S/EVfhmcU9Sy7ExhYeD0qWzLGY+QEHjMOEzy7lVAHhlWLupv5gdfuCj9siSfYWTerfI bRYRIy2P4u24E74pWBU7owVuOTAGYWRekTmG8= MIME-Version: 1.0 Received: by 10.229.64.222 with SMTP id f30mr5333367qci.227.1321553965454; Thu, 17 Nov 2011 10:19:25 -0800 (PST) Received: by 10.229.220.79 with HTTP; Thu, 17 Nov 2011 10:19:25 -0800 (PST) In-Reply-To: <20111117072023.GA94228@DataIX.net> References: <20111117072023.GA94228@DataIX.net> Date: Thu, 17 Nov 2011 19:19:25 +0100 Message-ID: From: ian ivy To: Jason Hellenthal Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-security@freebsd.org Subject: Re: Starting X11 with kernel secure level greater than -1/0. X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Nov 2011 18:19:26 -0000 Thanks Jason. Of course opening (or doing whatever with) mem, kmem etc. is a security flaw. A fatal flaw. I thought that OpenBSD team has done nice work to achieve a compromise between security and the use of X and it could be done with FreeBSD. I already have implemented some of MAC's policies (e.g. mac_seeotheruids), and a couple of sysctl's options, but for now, it is implemented for various testing. I have to read a lot more on these topics. :-) Kernel without BPF? OK! But not for now - I need to have DHCP upon startup for some time yet.! :-) Best regards!