Re: [TLS] Another IRINA bug in TLS

Aaron Zauner <azet@azet.org> Wed, 20 May 2015 15:20 UTC

Return-Path: <azet@azet.org>
X-Original-To: tls@ietfa.amsl.com
Delivered-To: tls@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 597B61A87BF for <tls@ietfa.amsl.com>; Wed, 20 May 2015 08:20:05 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.6
X-Spam-Level:
X-Spam-Status: No, score=-2.6 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7] autolearn=ham
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 XrYwdDmvydnD for <tls@ietfa.amsl.com>; Wed, 20 May 2015 08:20:04 -0700 (PDT)
Received: from mail-wi0-f180.google.com (mail-wi0-f180.google.com [209.85.212.180]) (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 E76771A8830 for <tls@ietf.org>; Wed, 20 May 2015 08:20:00 -0700 (PDT)
Received: by wicmc15 with SMTP id mc15so153309046wic.1 for <tls@ietf.org>; Wed, 20 May 2015 08:19:59 -0700 (PDT)
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:date:from:user-agent:mime-version:to :cc:subject:references:in-reply-to:content-type; bh=KCPjctPjAGQ4rJhhteHFkqezdCWjAqOMHVcd9NmYjLA=; b=AdCyqeA7yeb/KLTMvfieE9EQeJdscD2u1aCyfFYRhs3zZT7HkJQPvCNzeWvQARukLp 865dOMKf6NpkqYdhBnvQBg+JZwnYAMOoZB+DgmKAFCu/GCwB8Gf15+QvN/4Wv/sIVn2A eeaUWMVmW0amze+eQv09Ma970crmvMk9zXx10GsybzucKdNhM8QjpNau42U6FkkLHTZU z1c/opmfrdcSo6SAYDGhDUifk00v+TmJjrxURngfdOEq6dKG9gsIVdmH0WWW0nXEVAzX C14F8Fha3TBT8AWLOd26iOJE26pnUBywaFwhjO2nStZfAuRMPkHJ37SlnkfF4JeJeruC MBBw==
X-Gm-Message-State: ALoCoQkcec3bdqe0kyHwHerwMuR3omgp26XLYPvIVuBGLAUtLsLzQz7ShKaBapr5gGZ86VcZnKAl
X-Received: by 10.180.221.9 with SMTP id qa9mr20595222wic.52.1432135199217; Wed, 20 May 2015 08:19:59 -0700 (PDT)
Received: from [172.16.1.29] ([188.21.236.102]) by mx.google.com with ESMTPSA id k2sm3993888wif.3.2015.05.20.08.19.57 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 20 May 2015 08:19:57 -0700 (PDT)
Message-ID: <555CA61C.5090405@azet.org>
Date: Wed, 20 May 2015 17:19:56 +0200
From: Aaron Zauner <azet@azet.org>
User-Agent: Postbox 3.0.11 (Macintosh/20140602)
MIME-Version: 1.0
To: Nikos Mavrogiannopoulos <nmav@redhat.com>
References: <CACsn0ckaML0M_Foq9FXs5LA2dRb1jz+JDX7DUej_ZbuSkUB=tQ@mail.gmail.com> <1432134170.2926.9.camel@redhat.com>
In-Reply-To: <1432134170.2926.9.camel@redhat.com>
X-Enigmail-Version: 1.2.3
Content-Type: multipart/signed; micalg="pgp-sha512"; protocol="application/pgp-signature"; boundary="------------enig0B02A49BB4B9BB7F35DD917B"
Archived-At: <http://mailarchive.ietf.org/arch/msg/tls/PqLiLqVfaS3UZwSCWrQGFd2VCos>
Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] Another IRINA bug in TLS
X-BeenThere: tls@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: "This is the mailing list for the Transport Layer Security working group of the IETF." <tls.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tls>, <mailto:tls-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/tls/>
List-Post: <mailto:tls@ietf.org>
List-Help: <mailto:tls-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tls>, <mailto:tls-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 20 May 2015 15:20:05 -0000

Hi,

Nikos Mavrogiannopoulos wrote:
> On Wed, 2015-05-20 at 10:05 -0400, Watson Ladd wrote:
>> https://weakdh.org/
>>
>> Transcript hashing will solve this problem. In the meantime, you want
>> to turn off DH_EXPORT. 
> 
> The interesting thing is that there are no DHE_EXPORT ciphersuites.
> 

I was also wondering about that. IANA has no entries for DHE_EXPORT*. As
far as I can tell there isn't even information on the searchable web on
that. If you google DHE_EXPORT it'll point you to this very paper and
that's about it.

Aaron