Re: [DNSOP] DNSOP Call for Adoption - draft-west-let-localhost-be-localhost

Ted Lemon <mellon@fugue.com> Wed, 13 September 2017 23:45 UTC

Return-Path: <mellon@fugue.com>
X-Original-To: dnsop@ietfa.amsl.com
Delivered-To: dnsop@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 494C01320DC for <dnsop@ietfa.amsl.com>; Wed, 13 Sep 2017 16:45:37 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.599
X-Spam-Level:
X-Spam-Status: No, score=-2.599 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, 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 T1W-oPQodB3T for <dnsop@ietfa.amsl.com>; Wed, 13 Sep 2017 16:45:35 -0700 (PDT)
Received: from mail-qk0-x22b.google.com (mail-qk0-x22b.google.com [IPv6:2607:f8b0:400d:c09::22b]) (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 ACC42126B7E for <dnsop@ietf.org>; Wed, 13 Sep 2017 16:45:35 -0700 (PDT)
Received: by mail-qk0-x22b.google.com with SMTP id z143so4169168qkb.3 for <dnsop@ietf.org>; Wed, 13 Sep 2017 16:45:35 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fugue-com.20150623.gappssmtp.com; s=20150623; h=from:mime-version:subject:date:references:to:in-reply-to:message-id; bh=WQ5MviNozFunyfMzXwFDl9txSxaL9ceU4FqH1uYV3BA=; b=IwBPC7oQJvqLEZDKpA4pnR8TDol0oYMko+AZSIU0TBibYBYeMHMLU6qPmIzabon6xN B+CLKJf0ln4eeRiWheSzWhCSrHRmRgdr5xA6LK0lS7HdlPtS8EcH8bGTOoOrdSTYQre2 6N3IYEjfnh6y/nvFui53KFL7ZL1N5yKlIMdurUJPwGjOeBHoXXqD0DUL2oCklcTj8H+y E4VK0SKKSBVdfDodWyMcn5Q8fv9NCpCgcDaCkI0RtK9UE8FcNaeJ3oHFfL+1HV7EJT3v LzIGOXHUoHQQFEmeFtU5yn32ICB+lZuxoTx8Bz5kfVgKhRAsWsFnmkR33xFif7B7219L SDrQ==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:mime-version:subject:date:references:to :in-reply-to:message-id; bh=WQ5MviNozFunyfMzXwFDl9txSxaL9ceU4FqH1uYV3BA=; b=bB4VRMvXMMCSt7tvDLe9TRgp77oypQo2ExlLTi7E7oYoQEyeE8p9DxTSvbCaP7iXir ugckkZrBh2jLNwpd1yJSFWOtLXImakvjspbiGcAcK354Are8HOF0BCVeAzl5qMXAAiSy hPTWhCTXDaQ8FaZY8YrLtGR7UDPSPs+sonGz/+ebI7ix1pBrYCD2T1F1HnY+OovAI2DT c4DSoBHht+wwsZPRuaZkrBywo3JaE6kNGn4a02XF4+luJvrL/0EnxzV1YTyCHtdC+eoj 3qVa24//qmZKPRpPm5kjrFGOtlTlrIvwPOF/NHVxYZhp1Ogi6fZz9Dkvev9ohCPxMRta ndOQ==
X-Gm-Message-State: AHPjjUh69/V5SqkGCd95O5nQZm9QXwR2SROmoKRkVNXO7M0JXwXpWRi9 xjnH91sGRuL1QQRaGO7AVA==
X-Google-Smtp-Source: AOwi7QD6jpErB7AXV9VQYkYiBOP3a/55fzGcJQI1u9koPze9qdNj4y7AiCcCYnpAtbGtFnXnj/pkpg==
X-Received: by 10.55.36.3 with SMTP id w3mr305142qkg.284.1505346334468; Wed, 13 Sep 2017 16:45:34 -0700 (PDT)
Received: from cavall.ether.lede.home (c-24-60-163-103.hsd1.ma.comcast.net. [24.60.163.103]) by smtp.gmail.com with ESMTPSA id w46sm4716596qta.84.2017.09.13.16.45.33 for <dnsop@ietf.org> (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 13 Sep 2017 16:45:33 -0700 (PDT)
From: Ted Lemon <mellon@fugue.com>
Content-Type: multipart/alternative; boundary="Apple-Mail=_5539AE07-3C44-46A7-8E17-7AF6F5792608"
Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\))
Date: Wed, 13 Sep 2017 19:45:32 -0400
References: <20170913171915.1194.qmail@ary.lan>
To: dnsop WG <dnsop@ietf.org>
In-Reply-To: <20170913171915.1194.qmail@ary.lan>
Message-Id: <714677EA-E3C8-4145-825C-5BA8EABD018C@fugue.com>
X-Mailer: Apple Mail (2.3273)
Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/TBiaaTxSNBVQOT0pTJRh8j8oD6E>
Subject: Re: [DNSOP] DNSOP Call for Adoption - draft-west-let-localhost-be-localhost
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: IETF DNSOP WG mailing list <dnsop.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dnsop>, <mailto:dnsop-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/dnsop/>
List-Post: <mailto:dnsop@ietf.org>
List-Help: <mailto:dnsop-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dnsop>, <mailto:dnsop-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 13 Sep 2017 23:45:37 -0000

On Sep 13, 2017, at 1:19 PM, John Levine <johnl@taugh.com> wrote:
> I concur with Mark that while localhost.<foo> is a problem,
> <foo>.localhost is not.  I've occasionally used that hack to pass
> traffice to various servers running on 127/8 addresses other than
> 127.0.0.1.

So we should expose end-users to attack because it's "occasionally" convenient for you to do this hack?