From owner-freebsd-stable@FreeBSD.ORG Sat Apr 20 13:21:45 2013 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id B6CE7311 for ; Sat, 20 Apr 2013 13:21:45 +0000 (UTC) (envelope-from gondim@bsdinfo.com.br) Received: from zeus.linuxinfo.com.br (zeus.linuxinfo.com.br [186.193.48.13]) by mx1.freebsd.org (Postfix) with ESMTP id 400641D34 for ; Sat, 20 Apr 2013 13:21:44 +0000 (UTC) Received: from zeus.linuxinfo.com.br (zeus.linuxinfo.com.br [127.0.0.1]) by zeus.linuxinfo.com.br (Postfix) with ESMTP id 1F6B3466A45D for ; Sat, 20 Apr 2013 10:19:25 -0300 (BRT) X-Virus-Scanned: amavisd-new at zeus.linuxinfo.com.br Received: from zeus.linuxinfo.com.br ([127.0.0.1]) by zeus.linuxinfo.com.br (zeus.linuxinfo.com.br [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Auwl-AlEJVrN for ; Sat, 20 Apr 2013 10:19:21 -0300 (BRT) Received: from MacBook-de-Gondim-2.local (unknown [186.193.48.8]) by zeus.linuxinfo.com.br (Postfix) with ESMTPSA id 0A1B2466A458 for ; Sat, 20 Apr 2013 10:19:21 -0300 (BRT) Message-ID: <5172965A.9080600@bsdinfo.com.br> Date: Sat, 20 Apr 2013 10:21:30 -0300 From: Marcelo Gondim User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/20130328 Thunderbird/17.0.5 MIME-Version: 1.0 To: freebsd-stable@freebsd.org Subject: Possible DoS in mpd 5.6 pppoe server Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.14 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 20 Apr 2013 13:21:45 -0000 Hi all, I'm doing tests with mpdas pppoeserver. Tried to simulate an attack of 1000 connections using an incorrect login and after a certain time can cause a kernel panic in the system. Below the panicgenerated: http://pastebin.com/nUXGVR3y Other equipment I do: # for (( i=0; i < 1000; i++ )); do ppp -ddial intnet ; done My System: Intel Motherboard Server S5500BC with Dual Processor Xeon(R) CPU E5606 @ 2.13GHz 8Gb ram I do not understand programming in Cor Assembly. But could someone tell me if what happened was a system problem or hardware? Best regards, Gondim