From owner-freebsd-security@FreeBSD.ORG Tue Sep 16 10:19:58 2014 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 544F55BE for ; Tue, 16 Sep 2014 10:19:58 +0000 (UTC) Received: from manchester-1.man.uk.cluster.ok24.net (manchester-1.man.uk.cluster.ok24.net [213.138.100.64]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 0FEE6691 for ; Tue, 16 Sep 2014 10:19:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=simple/simple; d=pyro.eu.org; s=09.2014; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:References:Subject:To:MIME-Version:From:Date:Message-ID; bh=2ewytUlfvPHcBBnDmPVZOrNa9RJz7Auoy7pWgJfBSjo=; b=KV9sevE+NX9dRpYZF9JZFuZkTUzGr5SRItWMzl/ri2QDRWpSdbIwknQJdxwE2z2T/VZXcn4k42jT3b0QTcAHXXpO1fum+nfp4UdLJHDBxNvSzOVlze4XNnJO67XtgSShdhUOhF8kB8RLMTP1SQjDPm/RNok6R8zsHa1NV/IfXHM=; X-Spam-Status: No, score=-1.1 required=2.0 tests=ALL_TRUSTED, BAYES_00, DKIM_ADSP_DISCARD Received: from guisborough-1.rcc.uk.cluster.ok24.net ([217.155.40.118]) by manchester-1.man.uk.cluster.ok24.net with esmtps (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.80) (envelope-from ) id 1XTprN-0001cy-Jx for freebsd-security@freebsd.org; Tue, 16 Sep 2014 11:19:47 +0100 Received: from [10.0.1.191] by guisborough-1.rcc.uk.cluster.ok24.net with esmtpsa (TLSv1:DHE-RSA-AES128-SHA:128) (Exim 4.80) (envelope-from ) id 1XTprM-0006tE-H4 for freebsd-security@freebsd.org; Tue, 16 Sep 2014 11:19:44 +0100 Message-ID: <54180EBF.2050104@pyro.eu.org> Date: Tue, 16 Sep 2014 11:19:43 +0100 From: Steven Chamberlain User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Icedove/24.7.0 MIME-Version: 1.0 To: freebsd-security@freebsd.org Subject: Re: FreeBSD Security Advisory FreeBSD-SA-14:19.tcp References: <201409161014.s8GAE77Z070671@freefall.freebsd.org> In-Reply-To: <201409161014.s8GAE77Z070671@freefall.freebsd.org> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Sep 2014 10:19:58 -0000 Hi, On 16/09/14 11:14, FreeBSD Security Advisories wrote: > An attacker who has the ability to spoof IP traffic can tear down a > TCP connection by sending only 2 packets, if they know both TCP port > numbers. This may be a silly question but, if the attacker can spoof IP traffic, can't the same be done with a single RST packet? Thanks Regards, -- Steven Chamberlain steven@pyro.eu.org