From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:35841)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <peter.maydell@linaro.org>) id 1YcsJ0-0007uA-G1
	for qemu-devel@nongnu.org; Tue, 31 Mar 2015 05:17:55 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <peter.maydell@linaro.org>) id 1YcsIx-0001S9-7r
	for qemu-devel@nongnu.org; Tue, 31 Mar 2015 05:17:54 -0400
Received: from mail-ig0-f173.google.com ([209.85.213.173]:33305)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <peter.maydell@linaro.org>) id 1YcsIx-0001S4-30
	for qemu-devel@nongnu.org; Tue, 31 Mar 2015 05:17:51 -0400
Received: by ignm3 with SMTP id m3so8848045ign.0
	for <qemu-devel@nongnu.org>; Tue, 31 Mar 2015 02:17:50 -0700 (PDT)
MIME-Version: 1.0
In-Reply-To: <1427212260.18768.28.camel@nilsson.home.kraxel.org>
References: <1427151502-14386-1-git-send-email-berrange@redhat.com>
	<1427212260.18768.28.camel@nilsson.home.kraxel.org>
From: Peter Maydell <peter.maydell@linaro.org>
Date: Tue, 31 Mar 2015 10:17:29 +0100
Message-ID: <CAFEAcA_Ks+zf1B-X9sm+yYNnuHAFjFr2YtcE6U8Z9phGPUjO5A@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Subject: Re: [Qemu-devel] [PATCH 0/2] CVE-2015-1779: fix denial of service
 in VNC websockets
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: QEMU Developers <qemu-devel@nongnu.org>

On 24 March 2015 at 15:51, Gerd Hoffmann <kraxel@redhat.com> wrote:
> On Mo, 2015-03-23 at 22:58 +0000, Daniel P. Berrange wrote:
>> The VNC websockets protocol decoder has two places where it did
>> not correctly limit its resource usage when processing data from
>> the client. This can be abused by a malicious client to cause QEMU
>> to consume all system memory, unless it is otherwise limited by
>> ulimits and/or cgroups. These problems can be triggered in the
>> websockets layer before the VNC protocol actually starts, so no
>> client authentication will have taken place at this point.
>
> Hmm, with patch 1/2 applied novnc disconnects frequently.  Boot messages
> on the text (framebuffer) console seems to work fine.  But after logging
> in via gdm and trying to do stuff in gnome shell problems are starting.

Any further progress here? Ideally I'd like to get a fix for
this CVE into rc2...

thanks
-- PMM