IETF Logo Mail Archive

Re: [dhcwg] [Technical Errata Reported] RFC8415 (6269)

Ted Lemon <mellon@fugue.com> Mon, 31 August 2020 17:21 UTC

Return-Path: <mellon@fugue.com>
X-Original-To: dhcwg@ietfa.amsl.com
Delivered-To: dhcwg@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E22CC3A179A for <dhcwg@ietfa.amsl.com>; Mon, 31 Aug 2020 10:21:01 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.898
X-Spam-Level:
X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=fugue-com.20150623.gappssmtp.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id nshBTsOC96uB for <dhcwg@ietfa.amsl.com>; Mon, 31 Aug 2020 10:21:00 -0700 (PDT)
Received: from mail-qk1-x72e.google.com (mail-qk1-x72e.google.com [IPv6:2607:f8b0:4864:20::72e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 60A403A0BF4 for <dhcwg@ietf.org>; Mon, 31 Aug 2020 10:21:00 -0700 (PDT)
Received: by mail-qk1-x72e.google.com with SMTP id n129so6851200qkd.6 for <dhcwg@ietf.org>; Mon, 31 Aug 2020 10:21:00 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fugue-com.20150623.gappssmtp.com; s=20150623; h=from:message-id:mime-version:subject:date:in-reply-to:cc:to :references; bh=O/FHi6SZ8kl7j1+RzidzyhoJP3zmrDmz6qp/Tchqp9w=; b=sVWSOBJuiK34slUSJyVpW1idliOwLlSm6cazQKOIzbRm9k+NxPQ9bNKqkXlNu3iKN9 oZRXYD9C6YWEbc+ATG5MJbC44uswS8bk0ws7cMxqSfkY0H4oDkL5w9NPTx2696hG02hI cKQUwNS7KzFJnmhOvaQRWyzgjOY1CYsY51jGXbiSRjA8JHs+LaCL6rnaJZpP6h+3ZptF DLCBspWInDhkBVOF+9nWEkYjHgZHwam6c4ePzpwYYkgwyKN03zfUCRbCbD3LDayQhM13 ywd0iTr3T7gV6skFm7sfozkN1OM0ESUogzt5iBATxSpwGyjynNTPq1N3gznGKdxHVEaq uiTQ==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:message-id:mime-version:subject:date :in-reply-to:cc:to:references; bh=O/FHi6SZ8kl7j1+RzidzyhoJP3zmrDmz6qp/Tchqp9w=; b=RUFSaPNiyMqsnM++Gv5/ehUCvEDqJv83bP1mq0ssPif3rTbc1G3lTX8nn4/XBGFlvd w+Ty0JJfSV6ozQ/J9SNvJz9pEqJNGASdisqlcNjCaoW6aQo0yVIDJW60jwEkH5nt1KPw c6EriRHd4hOv+b78Fy5SQ6DpAvK9chxNIextm+hnTRpaPobIR1WQOxBfojFVjDhUSyfX /N2hksIwDBXmjqykDEPb8876SAz86NTlxPGg0Kx10WezRmgE1HYn4JBdhPpYq2USS1OK 9+rAgBBdVEnf89FYqGvyxRD85ATru/RGBz7HfFad55HJt+R227hlVdpFX9tEW7OMi1js M68Q==
X-Gm-Message-State: AOAM533z7olWWh/Ms3jpqYSmIJH25pRqVifrmxAwB7T9p8dmTSrY+SKa Wbge6DIrr6sBXTZj/DkrwBdvgA==
X-Google-Smtp-Source: ABdhPJzPjPn+6Tp2VU3V0APMDkNSIqvO8fCD8lv9gPg3HAsDZYfxM1qSZR1MI2o1U8YH6McCmYoOFA==
X-Received: by 2002:a37:e103:: with SMTP id c3mr2369677qkm.90.1598894459090; Mon, 31 Aug 2020 10:20:59 -0700 (PDT)
Received: from localhost.localdomain ([2601:18b:300:36ee:a031:ab1d:4501:6099]) by smtp.gmail.com with ESMTPSA id a52sm11420860qtc.22.2020.08.31.10.20.57 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 31 Aug 2020 10:20:58 -0700 (PDT)
From: Ted Lemon <mellon@fugue.com>
Message-Id: <6C4649AD-EB18-47E6-A5EA-440910977A26@fugue.com>
Content-Type: multipart/alternative; boundary="Apple-Mail=_DF5FFCCA-1839-4714-ACCE-3AC7E37D3FFB"
Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.0.3.2.26\))
Date: Mon, 31 Aug 2020 13:20:56 -0400
In-Reply-To: <BN7PR11MB2547CB85EBCF595FEE42A340CF510@BN7PR11MB2547.namprd11.prod.outlook.com>
Cc: RFC Errata System <rfc-editor@rfc-editor.org>, "tomasz.mrugalski@gmail.com" <tomasz.mrugalski@gmail.com>, "msiodelski@gmail.com" <msiodelski@gmail.com>, "Andrew Yourtchenko (ayourtch)" <ayourtch@cisco.com>, "mcr+ietf@sandelman.ca" <mcr+ietf@sandelman.ca>, "jiangsheng@huawei.com" <jiangsheng@huawei.com>, "twinters@iol.unh.edu" <twinters@iol.unh.edu>, "ek.ietf@gmail.com" <ek.ietf@gmail.com>, "Eric Vyncke (evyncke)" <evyncke@cisco.com>, "tim@qacafe.com" <tim@qacafe.com>, "fhamme@united-internet.de" <fhamme@united-internet.de>, "dhcwg@ietf.org" <dhcwg@ietf.org>
To: "Bernie Volz (volz)" <volz@cisco.com>
References: <20200830154615.6CECEF4076B@rfc-editor.org> <BN7PR11MB2547CB85EBCF595FEE42A340CF510@BN7PR11MB2547.namprd11.prod.outlook.com>
X-Mailer: Apple Mail (2.3654.0.3.2.26)
Archived-At: <https://mailarchive.ietf.org/arch/msg/dhcwg/yLU9sTXyRmlhTiB_vHRI9I_vF74>
X-Mailman-Approved-At: Mon, 31 Aug 2020 10:58:22 -0700
Subject: Re: [dhcwg] [Technical Errata Reported] RFC8415 (6269)
X-BeenThere: dhcwg@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: <dhcwg.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dhcwg>, <mailto:dhcwg-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/dhcwg/>
List-Post: <mailto:dhcwg@ietf.org>
List-Help: <mailto:dhcwg-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dhcwg>, <mailto:dhcwg-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 31 Aug 2020 17:21:02 -0000

On Aug 31, 2020, at 10:46 AM, Bernie Volz (volz) <volz@cisco.com> wrote:
> While we could debate whether to allow Server Unicast option in a Reconfigure message itself, I think it best not to do this as it could be a security risk (though perhaps it is marginal if the attacker already knows the nonce). But that would be a change over the existing specification as best I can determine.

Another option would be to require the client to honor the “Server Unicast” option from the transaction to which the Reconfigure applies.

v2.23.0 | Report a Bug | By Email