From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#22202: 24.5; SECURITY ISSUE -- Emacs Server vulnerable to random number generator attack on Windows systems Date: Thu, 31 Dec 2015 22:13:22 +0200 Message-ID: <8337uibcm5.fsf@gnu.org> References: <83lh8ddy45.fsf@gnu.org> <8760zh81oo.fsf@isaac.fritz.box> <83mvssc4ix.fsf@gnu.org> <1451581478.15612.5.camel@gmail.com> <834meybf2v.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1451699566 15987 80.91.229.3 (2 Jan 2016 01:52:46 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 2 Jan 2016 01:52:46 +0000 (UTC) Cc: 22202@debbugs.gnu.org, demetriobenour@gmail.com, deng@randomsample.de To: Richard Copley Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Jan 02 02:52:36 2016 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 1aFBMu-0003Ma-6d for geb-bug-gnu-emacs@m.gmane.org; Sat, 02 Jan 2016 02:52:32 +0100 Original-Received: from localhost ([::1]:37230 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aFBMt-00077y-JQ for geb-bug-gnu-emacs@m.gmane.org; Fri, 01 Jan 2016 20:52:31 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:54841) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aFBMY-0006Z9-1X for bug-gnu-emacs@gnu.org; Fri, 01 Jan 2016 20:52:11 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aFBMV-0002vq-8c for bug-gnu-emacs@gnu.org; Fri, 01 Jan 2016 20:52:09 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:45930) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aFBMV-0002vk-4z for bug-gnu-emacs@gnu.org; Fri, 01 Jan 2016 20:52:07 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84) (envelope-from ) id 1aFBMU-0008Bt-V2 for bug-gnu-emacs@gnu.org; Fri, 01 Jan 2016 20:52:06 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 02 Jan 2016 01:52:06 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 22202 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: security Original-Received: via spool by 22202-submit@debbugs.gnu.org id=B22202.145169951831363 (code B ref 22202); Sat, 02 Jan 2016 01:52:06 +0000 Original-Received: (at 22202) by debbugs.gnu.org; 2 Jan 2016 01:51:58 +0000 Original-Received: from localhost ([127.0.0.1]:34130 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aFBMM-00089h-EC for submit@debbugs.gnu.org; Fri, 01 Jan 2016 20:51:58 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:33965) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aFBB0-00068D-Lt for 22202@debbugs.gnu.org; Fri, 01 Jan 2016 20:40:14 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aEjaT-0005vQ-Km for 22202@debbugs.gnu.org; Thu, 31 Dec 2015 15:12:44 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:35058) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aEjaT-0005vM-HP; Thu, 31 Dec 2015 15:12:41 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:2521 helo=HOME-C4E4A596F7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1aEjaS-0004PE-Op; Thu, 31 Dec 2015 15:12:41 -0500 In-reply-to: (message from Richard Copley on Thu, 31 Dec 2015 19:49:42 +0000) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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:111076 Archived-At: > From: Richard Copley > Date: Thu, 31 Dec 2015 19:49:42 +0000 > Cc: Demetrios Obenour , David Engster , > 22202@debbugs.gnu.org > > >> What Demetri has just described is what I would do. > > > >Now I'm confused: do what? > > As I understand it: Provide a function callable from lisp that returns > a cryptographically secure sequence of random bytes, of a specified > length. Use that function to generate the server secret. That's what my patch does. > >We still need to support 'random' with an > >argument, so we cannot get rid of seeding a PRNG with a known value. > >And I didn't want to remove srandom. > > Given the above, we could leave "random", etc., as they are, or we > could use a better PRNG and/or seed with system entropy. It would > no longer be tied up with this issue report. Patches welcome, as I said already.