From owner-freebsd-security@FreeBSD.ORG Thu Jul 24 18:23:26 2008 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 47B1E106566C for ; Thu, 24 Jul 2008 18:23:26 +0000 (UTC) (envelope-from julian@elischer.org) Received: from outY.internet-mail-service.net (outy.internet-mail-service.net [216.240.47.248]) by mx1.freebsd.org (Postfix) with ESMTP id 3ACD88FC14 for ; Thu, 24 Jul 2008 18:23:26 +0000 (UTC) (envelope-from julian@elischer.org) Received: from idiom.com (mx0.idiom.com [216.240.32.160]) by out.internet-mail-service.net (Postfix) with ESMTP id 3E44E2425; Thu, 24 Jul 2008 11:23:26 -0700 (PDT) Received: from julian-mac.elischer.org (localhost [127.0.0.1]) by idiom.com (Postfix) with ESMTP id 1BB082D604A; Thu, 24 Jul 2008 11:23:24 -0700 (PDT) Message-ID: <4888C882.30707@elischer.org> Date: Thu, 24 Jul 2008 11:22:58 -0700 From: Julian Elischer User-Agent: Thunderbird 2.0.0.14 (Macintosh/20080421) MIME-Version: 1.0 To: Poul-Henning Kamp References: <60254.1216921273@critter.freebsd.dk> In-Reply-To: <60254.1216921273@critter.freebsd.dk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Thu, 24 Jul 2008 18:27:34 +0000 Cc: Kostik Belousov , Liste FreeBSD-security , Robert Watson , Lyndon Nerenberg Subject: Re: A new kind of security needed 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, 24 Jul 2008 18:23:26 -0000 Poul-Henning Kamp wrote: > In message <200807241639.m6OGda4b004216@apollo.backplane.com>, Matthew Dillon w > rites: >> Doesn't OpenBSD have a syscall filtering mechanic where one can restrict >> the file paths the program is allowed to access? > > Yes they do. > > Really smart (multithreaded) > programs modify the strings after the check and get > to access the files anyway. though it's not always successful. It's kind of strange that they don't just copyin the name. >