Martin Thomson <martin.thomson@gmail.com> Wed, 21 October 2015 22:10 UTC

Return-Path: <ietf-http-wg-request+bounce-httpbisa-archive-bis2juki=lists.ie@listhub.w3.org>
X-Original-To: ietfarch-httpbisa-archive-bis2Juki@ietfa.amsl.com
Delivered-To: ietfarch-httpbisa-archive-bis2Juki@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com []) by ietfa.amsl.com (Postfix) with ESMTP id 129591B3288 for <ietfarch-httpbisa-archive-bis2Juki@ietfa.amsl.com>; Wed, 21 Oct 2015 15:10:15 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -5.113
X-Spam-Status: No, score=-5.113 tagged_above=-999 required=5 tests=[BAYES_20=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham
Received: from mail.ietf.org ([]) by localhost (ietfa.amsl.com []) (amavisd-new, port 10024) with ESMTP id Kyq3BvK06RkV for <ietfarch-httpbisa-archive-bis2Juki@ietfa.amsl.com>; Wed, 21 Oct 2015 15:10:13 -0700 (PDT)
Received: from frink.w3.org (frink.w3.org []) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2FAD81B3283 for <httpbisa-archive-bis2Juki@lists.ietf.org>; Wed, 21 Oct 2015 15:10:12 -0700 (PDT)
Received: from lists by frink.w3.org with local (Exim 4.80) (envelope-from <ietf-http-wg-request@listhub.w3.org>) id 1Zp1WF-0004k6-RM for ietf-http-wg-dist@listhub.w3.org; Wed, 21 Oct 2015 22:06:03 +0000
Resent-Date: Wed, 21 Oct 2015 22:06:03 +0000
Resent-Message-Id: <E1Zp1WF-0004k6-RM@frink.w3.org>
Received: from maggie.w3.org ([]) by frink.w3.org with esmtps (TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from <martin.thomson@gmail.com>) id 1Zp1WC-0004jP-76 for ietf-http-wg@listhub.w3.org; Wed, 21 Oct 2015 22:06:00 +0000
Received: from mail-yk0-f180.google.com ([]) by maggie.w3.org with esmtps (TLS1.2:RSA_ARCFOUR_SHA1:128) (Exim 4.80) (envelope-from <martin.thomson@gmail.com>) id 1Zp1WA-0005jG-Dn for ietf-http-wg@w3.org; Wed, 21 Oct 2015 22:05:59 +0000
Received: by yknn9 with SMTP id n9so64423019ykn.0 for <ietf-http-wg@w3.org>; Wed, 21 Oct 2015 15:05:31 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=CTviv+YXUyUdi7oyALPrRVi8+oBwvF0MrRhsEDn+ywc=; b=T9kalKOq/NYA90HHYona9CrQeRBcXSuLasP6PNDqAwNy1Vv8ANWPrJNIb7I5YPISV8 MJXAGlRPLoOUciGTt8ZnbuM5Cqm/BNxnma60ADg1cqE4h7apYBeivCKrj1Pv54eI5E9k FzipFUd/u09OnHMr2FlSU/zqHsxRf7fXcoDeIWnkTcwWwEOiKYOsgymQDEtetSSF/Nrc qMZOFhiZoKh5H0Zib0FAiv7wm/1JUMY8FSypwz1HLqz4b+bfoiveuWLVtbdqUMUbpRjW 6ayIfbMfTHT0T1DXUjF6rcrC2XDkveIaC6Hq/ppTPC1Ky9PS4AFuOt+dxkmzg75z+XoP EECA==
MIME-Version: 1.0
X-Received: by with SMTP id e200mr9533714ywa.120.1445465131339; Wed, 21 Oct 2015 15:05:31 -0700 (PDT)
Received: by with HTTP; Wed, 21 Oct 2015 15:05:31 -0700 (PDT)
Date: Wed, 21 Oct 2015 15:05:31 -0700
Message-ID: <CABkgnnXnC+TxPipsvLaGmDtD31ACyUcwYvy2RfmO9k08tw9Y_w@mail.gmail.com>
From: Martin Thomson <martin.thomson@gmail.com>
To: HTTP Working Group <ietf-http-wg@w3.org>, Mike West <mkwst@google.com>
Content-Type: text/plain; charset="UTF-8"
Received-SPF: pass client-ip=; envelope-from=martin.thomson@gmail.com; helo=mail-yk0-f180.google.com
X-W3C-Hub-Spam-Status: No, score=-7.9
X-W3C-Hub-Spam-Report: AWL=1.840, BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001, W3C_AA=-1, W3C_DB=-1, W3C_IRA=-1, W3C_IRR=-3, W3C_WL=-1
X-W3C-Scan-Sig: maggie.w3.org 1Zp1WA-0005jG-Dn 826219c2b98b67919afdc9b62795714a
X-Original-To: ietf-http-wg@w3.org
Subject: draft-west-leave-secure-cookies-alone
Archived-At: <http://www.w3.org/mid/CABkgnnXnC+TxPipsvLaGmDtD31ACyUcwYvy2RfmO9k08tw9Y_w@mail.gmail.com>
Resent-From: ietf-http-wg@w3.org
X-Mailing-List: <ietf-http-wg@w3.org> archive/latest/30390
X-Loop: ietf-http-wg@w3.org
Resent-Sender: ietf-http-wg-request@w3.org
Precedence: list
List-Id: <ietf-http-wg.w3.org>
List-Help: <http://www.w3.org/Mail/>
List-Post: <mailto:ietf-http-wg@w3.org>
List-Unsubscribe: <mailto:ietf-http-wg-request@w3.org?subject=unsubscribe>


I realize that we haven't discussed this at all, but it seems like a
no-brainer to me.  That is, if someone (Mike?) has a satisfactory
answer to this question: do you know what level of breakage is this
going to cause?  I have heard that this misfeature is relied upon by
some non-trivial number of sites.

For me, as long I can be satisfied that the breakage is extremely low,
or that it will soon be, then that's sufficient.  However, a
non-trivial amount of bustage will likely prevent us from deploying a
change like this.

The authors of the paper recommended that non-secure cookies be simply
given less precedence, so that they could not override cookies set by
their secure brethren.  That seems far less likely to cause
compatibility issues.  But I do prefer the change in the draft, if it
can be made to stick.

Either way, I'd support working on neutering this class of attacks.