From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#37656: 27.0.50; Arbitrary code execution with special `mode:' Date: Wed, 16 Oct 2019 22:34:22 +0300 Message-ID: <83r23ccwn5.fsf@gnu.org> References: <838splf7g1.fsf@gnu.org> <83d0ewehxf.fsf@gnu.org> <16f494c4-be3a-09d7-1c56-d58647059c44@orcon.net.nz> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="125003"; mail-complaints-to="usenet@blaine.gmane.org" Cc: plaiceadam@gmail.com, 37656@debbugs.gnu.org, stefan@marxist.se To: Phil Sainty Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Oct 16 21:35:17 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iKp4i-000WFV-OH for geb-bug-gnu-emacs@m.gmane.org; Wed, 16 Oct 2019 21:35:12 +0200 Original-Received: from localhost ([::1]:47504 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKp4h-00038x-8L for geb-bug-gnu-emacs@m.gmane.org; Wed, 16 Oct 2019 15:35:11 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:34553) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKp4a-00033F-2M for bug-gnu-emacs@gnu.org; Wed, 16 Oct 2019 15:35:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iKp4Z-0008Ox-0Q for bug-gnu-emacs@gnu.org; Wed, 16 Oct 2019 15:35:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:37757) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iKp4Y-0008Op-TR for bug-gnu-emacs@gnu.org; Wed, 16 Oct 2019 15:35:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iKp4Y-0000vw-PW for bug-gnu-emacs@gnu.org; Wed, 16 Oct 2019 15:35:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 16 Oct 2019 19:35:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 37656 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: security Original-Received: via spool by 37656-submit@debbugs.gnu.org id=B37656.15712544893561 (code B ref 37656); Wed, 16 Oct 2019 19:35:02 +0000 Original-Received: (at 37656) by debbugs.gnu.org; 16 Oct 2019 19:34:49 +0000 Original-Received: from localhost ([127.0.0.1]:46578 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iKp4L-0000vM-3A for submit@debbugs.gnu.org; Wed, 16 Oct 2019 15:34:49 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:53667) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iKp4I-0000v9-SU for 37656@debbugs.gnu.org; Wed, 16 Oct 2019 15:34:47 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:49487) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1iKp4D-0008C8-5w; Wed, 16 Oct 2019 15:34:41 -0400 Original-Received: from [176.228.60.248] (port=3080 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1iKp4C-00080r-KB; Wed, 16 Oct 2019 15:34:40 -0400 In-reply-to: <16f494c4-be3a-09d7-1c56-d58647059c44@orcon.net.nz> (message from Phil Sainty on Thu, 17 Oct 2019 08:09:04 +1300) 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: 209.51.188.43 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" Xref: news.gmane.org gmane.emacs.bugs:169485 Archived-At: > Cc: Adam Plaice , 37656@debbugs.gnu.org, > stefan@marxist.se > From: Phil Sainty > Date: Thu, 17 Oct 2019 08:09:04 +1300 > > On 17/10/19 6:09 AM, Eli Zaretskii wrote: > > I don't think that removing the feature will solve the more > > general problem in this bug report. > > > In particular it seems there is no point in removing the deprecated > method of calling a minor mode using local variables because, after > testing, the *approved* method of calling a minor mode via local > variables causes the same behaviour. i.e.: > > -*- mode: emacs-lisp; eval:(flymake-mode 1); -*- > > > So the deprecated approach isn't actually a factor here. Right, thanks for confirming. The question is: can we do something in core to prevent these problems, or does the solution have to be in the individual minor modes?