From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Ted Zlatanov Newsgroups: gmane.emacs.bugs Subject: bug#18967: Tramp disables important SSH security features Date: Thu, 06 Nov 2014 15:59:18 -0500 Organization: =?UTF-8?Q?=D0=A2=D0=B5=D0=BE=D0=B4=D0=BE=D1=80_?= =?UTF-8?Q?=D0=97=D0=BB=D0=B0=D1=82=D0=B0=D0=BD=D0=BE=D0=B2?= @ Cienfuegos Message-ID: <87tx2cxcyh.fsf@lifelogs.com> References: <545AC52C.1090807@dancol.org> <874muczg8b.fsf@lifelogs.com> <545BA8B0.8060107@dancol.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1415307632 17136 80.91.229.3 (6 Nov 2014 21:00:32 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 6 Nov 2014 21:00:32 +0000 (UTC) Cc: 18967@debbugs.gnu.org To: Daniel Colascione Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Nov 06 22:00:26 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XmUAF-0003BH-64 for geb-bug-gnu-emacs@m.gmane.org; Thu, 06 Nov 2014 22:00:19 +0100 Original-Received: from localhost ([::1]:56038 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XmUAE-00069M-UH for geb-bug-gnu-emacs@m.gmane.org; Thu, 06 Nov 2014 16:00:18 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:53988) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XmUA7-00069E-Hi for bug-gnu-emacs@gnu.org; Thu, 06 Nov 2014 16:00:16 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XmUA0-0001Ie-0O for bug-gnu-emacs@gnu.org; Thu, 06 Nov 2014 16:00:11 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:54915) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XmU9z-0001I6-Qo for bug-gnu-emacs@gnu.org; Thu, 06 Nov 2014 16:00:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1XmU9z-0004Hm-7g for bug-gnu-emacs@gnu.org; Thu, 06 Nov 2014 16:00:03 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Ted Zlatanov Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 06 Nov 2014 21:00:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18967 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: security Original-Received: via spool by 18967-submit@debbugs.gnu.org id=B18967.141530754516384 (code B ref 18967); Thu, 06 Nov 2014 21:00:03 +0000 Original-Received: (at 18967) by debbugs.gnu.org; 6 Nov 2014 20:59:05 +0000 Original-Received: from localhost ([127.0.0.1]:52128 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XmU92-0004GC-OE for submit@debbugs.gnu.org; Thu, 06 Nov 2014 15:59:04 -0500 Original-Received: from mail-qg0-f42.google.com ([209.85.192.42]:48167) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XmU90-0004Fp-7w for 18967@debbugs.gnu.org; Thu, 06 Nov 2014 15:59:02 -0500 Original-Received: by mail-qg0-f42.google.com with SMTP id i50so1441754qgf.15 for <18967@debbugs.gnu.org>; Thu, 06 Nov 2014 12:59:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lifelogs.com; s=google; h=from:to:cc:subject:organization:references:mail-copies-to :gmane-reply-to-list:date:in-reply-to:message-id:user-agent :mime-version:content-type; bh=8rB2Ktb48Ky3nhgQMMgqJpr/xA8DKa7DjlDpOgyLy/0=; b=u40L0yr5aCJQEnw1YKgAez9pxoITIPsm/waDmZBCLFf9j7iAoa80OoRcJ+jjNg3wN7 GDr6gYM3Tu81V3f5F5sBxLyfUDLhgr2W9aIiSdUTy8ZHvAkkm79jRH7QQZ89ouT8xuZO OtMZsTAEcTndG8WkFjLxrpYVuU5lm0aP5AM+w= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:organization:references :mail-copies-to:gmane-reply-to-list:date:in-reply-to:message-id :user-agent:mime-version:content-type; bh=8rB2Ktb48Ky3nhgQMMgqJpr/xA8DKa7DjlDpOgyLy/0=; b=bOH/RenHZ3SmJtyuANf449zRisGdJjAuZ7TrW59vWw7KquYzxqCJqolzHJEjkc8sTD rFOhYK+yYyJ1u1FopL+QwhMiVu3KfRUDTr138Tb0hahzHQ0rD4j0otcodQNyhkTOBURe H52GCIaCC82/AJvqG8uoKZeRfLpu6Em7lRnjYySyECQ2mm+ziPG9DQUaWdHq0krfvkby J9Q6d4VrQDCY0/GJZUczWPvPZFnIYi78IHVlIFp4UxjQ0vdiHDMRR/90+L2HUYfWemTq 83Hftb/qCCw+5ArulvcGvwXS/sg+ctbVgq2B2TmL8OaM06EKZ89MFAL3hbVswZahMMiw xZ1w== X-Gm-Message-State: ALoCoQntUjPCNFe3PhJ00PbT20ZTIneedDNnmHgyjCLlyHC6r2o1wEWDKM2hfJPmN5IMOlMcc3oQ X-Received: by 10.224.51.132 with SMTP id d4mr10821621qag.94.1415307541598; Thu, 06 Nov 2014 12:59:01 -0800 (PST) Original-Received: from flea (c-98-229-61-72.hsd1.ma.comcast.net. [98.229.61.72]) by mx.google.com with ESMTPSA id a97sm6798908qge.13.2014.11.06.12.59.00 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Thu, 06 Nov 2014 12:59:00 -0800 (PST) X-Face: bd.DQ~'29fIs`T_%O%C\g%6jW)yi[zuz6; d4V0`@y-~$#3P_Ng{@m+e4o<4P'#(_GJQ%TT= D}[Ep*b!\e,fBZ'j_+#"Ps?s2!4H2-Y"sx" Mail-Copies-To: never Gmane-Reply-To-List: yes In-Reply-To: <545BA8B0.8060107@dancol.org> (Daniel Colascione's message of "Thu, 06 Nov 2014 16:58:24 +0000") User-Agent: Gnus/5.130012 (Ma Gnus v0.12) Emacs/25.0.50 (gnu/linux) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:95636 On Thu, 06 Nov 2014 16:58:24 +0000 Daniel Colascione wrote: DC> On 11/06/2014 12:05 PM, Ted Zlatanov wrote: >> On Thu, 06 Nov 2014 00:47:40 +0000 Daniel Colascione wrote: >> DC> Tramp disables SSH host key checks by setting DC> GlobalKnownHostsFile=/dev/null, UserKnownHostsFile=/dev/null, and DC> StrictHostKeyChecking=no in its default method configuration. These DC> settings allow attackers to intercept connections to remote hosts, sniff DC> passwords, and cause other mischief. I don't think we should ship an DC> insecure configuration. >> >> I think the alternatives are something like what Ansible does: >> http://www.ansible.com/blog/2014/01/15/ssh-connection-upgrades-coming-in-ansible-1-5 >> or a SSH client library as a FFI. >> SSH, when called externally, has many failure modes without those >> options. DC> So let it fail. You can discuss that with the users and the maintainers and Michael Albinus. I was certainly not recommending a course of action. DC> Since when is it okay to trade diminished security for improved DC> reliability? Happiness comes from within? Ted