Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756145AbYLCXI1 (ORCPT ); Wed, 3 Dec 2008 18:08:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753882AbYLCXIR (ORCPT ); Wed, 3 Dec 2008 18:08:17 -0500 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:45631 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753876AbYLCXIR (ORCPT ); Wed, 3 Dec 2008 18:08:17 -0500 Date: Wed, 3 Dec 2008 23:08:20 +0000 From: Alan Cox To: Geoffrey McRae Cc: Nick Andrew , linux-kernel@vger.kernel.org Subject: Re: New Security Features, Please Comment Message-ID: <20081203230820.4473a162@lxorguk.ukuu.org.uk> In-Reply-To: <1228344292.6993.27.camel@lappy.spacevs.com> References: <1228260494.24232.21.camel@compy.ivent.com.au> <20081203005338.6472db7a@lxorguk.ukuu.org.uk> <1228268657.6679.4.camel@lappy.spacevs.com> <20081203124252.GD11807@mail.local.tull.net> <1228344292.6993.27.camel@lappy.spacevs.com> X-Mailer: Claws Mail 3.5.0 (GTK+ 2.12.12; x86_64-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 683 Lines: 17 > The children are pre-forked, so the overhead is in the setup... then > when the app recieves a request, it sets the child's uid to the uid of > the website, and then passes the request to the child, which, now, the > child is running as the website owner. But the child process may already have been trojanned by a previous user so it gains you nothing. > It is more secure then just doing nothing. I'm not convinced. Not remotely. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/