From owner-freebsd-questions@freebsd.org Mon Jan 8 12:28:51 2018 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9382AE69396 for ; Mon, 8 Jan 2018 12:28:51 +0000 (UTC) (envelope-from baho-utot@columbus.rr.com) Received: from cdptpa-cmomta01.email.rr.com (cdptpa-outbound-snat.email.rr.com [107.14.166.231]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "Client", Issuer "CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 5F10D78BF7 for ; Mon, 8 Jan 2018 12:28:50 +0000 (UTC) (envelope-from baho-utot@columbus.rr.com) Received: from raspberrypi.bildanet.com ([65.186.67.174]) by cmsmtp with ESMTP id YWXmeoZzwq4O5YWXperLZp; Mon, 08 Jan 2018 12:28:49 +0000 Received: from [192.168.1.143] by raspberrypi.bildanet.com with esmtp (Exim 4.84) (envelope-from ) id 1eYWXm-0000sn-D0 for freebsd-questions@freebsd.org; Mon, 08 Jan 2018 12:28:46 +0000 Subject: =?UTF-8?Q?Re:_Meltdown_=e2=80=93_Spectre?= To: freebsd-questions@freebsd.org References: <3AECDC7F-8838-4C09-AC7F-117DFBAA326C@sigsegv.be> <20180108085756.GA3001@c720-r314251> From: Baho Utot Message-ID: <48211515-cc6b-522b-ccd2-4d0c1f6a2072@columbus.rr.com> Date: Mon, 8 Jan 2018 07:28:41 -0500 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-CMAE-Envelope: MS4wfKz0ThTtvprZRVsuVNnklDTXodFT2KIhSSfq/YArQPw/RFXNS7RJC1SS2sRtqofEQeJ7UxUM9NjHYDRDAFT04VNocTG87fSzm/NlSuszqrjWEi9nLoqM jHh/tW/3htr4mIhzPsZ345Y4/xAbpZnJMPv/VLnu80ufKeFcvc5FvNtgrSjxd5B/dOsSmYRVYVr9cyBAuuXKsww/L8De+1+bcwM= X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Jan 2018 12:28:51 -0000 On 1/8/2018 4:15 AM, Aryeh Friedman wrote: > On Mon, Jan 8, 2018 at 3:57 AM, Matthias Apitz wrote: > >> As I side note, and not related to FreeBSD: My Internet server is run by >> some webhosting company (www.1blu.de), they use Ubuntu servers and since >> yesterday they have shutdown SSH access to the servers argumenting that >> they want >> protect my (all's) servers against attacks of Meltdown and Spectre. >> >> Imagine, next time we have to shutdown all IOT gadgets... > > > Not always possible for things like medical test equipment/devices. For > example I maintain a specialized EMR for interacting with Dr. prescribed > remote cardiac monitors. Having those off line is not an option since > they are used to detect if the patient needs something more serious like a > pace maker (also almost always a IoT device these days) surgery. > > The actual monitoring is done on Windows and was attacked by some > ransomeware via a bit coin miner that somehow installed it self. Since > all the users claim that they don't read email/upload/download executables > or any other of the known attack vectors this leaves something like > Meltdown or Spectre. We have also detected issues on the CentOS that has > the non-medical corporate site on it. The only machine left on touched on > the physical server (running some bare metal virtualization tool) is the > FreeBSD machine that runs the actual EMR we wrote. > > TL;DR -- It seems Linux and Windows already have issues with these holes > but I have seen little to no evidence that FreeBSD (when run as a host). > In general when ever any virtualization issue (like the bleed through on > Qemu last year) comes up FreeBSD is the one OS that seems to be immune > (thanks to good design of the OS and bhyve). This is the main reason why > I chose FreeBSD over Linux as the reference host for PetiteCloud. > This is not operating system specific, read the papers on theses two. it attacks the cpu, usally through a JIT