From owner-svn-src-all@freebsd.org Sun Aug 7 14:57:41 2016 Return-Path: Delivered-To: svn-src-all@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 85CC9BB00CF for ; Sun, 7 Aug 2016 14:57:41 +0000 (UTC) (envelope-from mailing-machine@vniz.net) Received: from mail-lf0-f41.google.com (mail-lf0-f41.google.com [209.85.215.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id EB1A41C8C for ; Sun, 7 Aug 2016 14:57:40 +0000 (UTC) (envelope-from mailing-machine@vniz.net) Received: by mail-lf0-f41.google.com with SMTP id l69so231807760lfg.1 for ; Sun, 07 Aug 2016 07:57:40 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:cc:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=fMIDfZPEK2gO4bwTtKRvw2kl0arpAAKA5fLK99Zt3G0=; b=MREDts4PYDgyDjmnuU6bGJThf635qaHWGx/MCphUp+cS/yRiA53LHmpAUFToxagEHn 6kHI+uLXPtAyy9BBc0dirJFtdwX/XQsAGE/a/6v74qi4EF0R/wVKhA6A4Dv5SzvA13cM fkhWrL24A5snLPRyscUoaFA1OongP67NNjPiBME5MsbLnZWuIUtQOO/tz2xHEALjMHVE YNyQp56agcDbg+tXTirtxQ2GhWErwJVG0aQoDGEpbtsO3GymIDq5SK0AhKSGNfXYH36t VueFohcUpnoa4wpPAgSHlM3xAdABeClBkrxUM+fdwJbDluogr7MwdP+vfp83zGEp5YtA e92w== X-Gm-Message-State: AEkoouvDT54/kiKKseowEKdhVrC8IPKtnbyEgg5kO9vbj2+l2SkjPxoUAtYo9fFsK8fu1g== X-Received: by 10.25.20.226 with SMTP id 95mr23209958lfu.194.1470581852710; Sun, 07 Aug 2016 07:57:32 -0700 (PDT) Received: from [192.168.1.2] ([89.169.173.68]) by smtp.gmail.com with ESMTPSA id 74sm4873109ljb.36.2016.08.07.07.57.31 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 07 Aug 2016 07:57:32 -0700 (PDT) Subject: Re: svn commit: r303716 - head/crypto/openssh To: Warner Losh References: <201608031608.u73G8Mjq055909@repo.freebsd.org> <9a01870a-d99d-13a2-54bd-01d32616263c@fastmail.net> <30e655d1-1df7-5e2a-fccb-269e3cea4684@freebsd.org> <20160807125227.GC22212@zxy.spb.ru> <7237f5e6-fd65-a7e5-7751-4ed1c464b39a@freebsd.org> <4D28752C-0584-4294-9250-FA88B0C6E805@bsdimp.com> Cc: Slawa Olhovchenkov , Bruce Simpson , Oliver Pinter , svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, =?UTF-8?Q?Dag-Erling_Sm=c3=b8rgrav?= From: Andrey Chernov Message-ID: Date: Sun, 7 Aug 2016 17:57:31 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: <4D28752C-0584-4294-9250-FA88B0C6E805@bsdimp.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 07 Aug 2016 14:57:41 -0000 On 07.08.2016 17:40, Warner Losh wrote: > >> On Aug 7, 2016, at 7:21 AM, Andrey Chernov wrote: >>> >>>> We can't turn our security >>>> team into compatibility team, by constantly restoring removed code, such >>>> code quickly becomes outdated and may add new security holes even being >>>> inactive. >>> >>> What is security hole by present this ciphers in _client_? >> >> It is obvious, but it will be better for you to ask openssh author about >> his decisions, I have no intention to act like explainer of his action. > > That’s a cop-out answer. We, as a project, need to articulate to our > users, whom we care about, why this rather obnoxious hit to usability > was taken. The answer must be more complete than “We just disabled > it because upstream disabled it for reasons we’re too lazy to explain > or document how to work around" Maybe I am too lazy, but in this particular case I prefer explanation from the author rather then my own explanations. In general my guessing of author intentions related to compatibility case can be not correct enough, so I don't want anybody relay on it. I.e. I don't want to mislead anybody.