Re: [TLS] Another IRINA bug in TLS

Nikos Mavrogiannopoulos <nmav@redhat.com> Wed, 20 May 2015 15:02 UTC

Return-Path: <nmav@redhat.com>
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 4C9D11A883A for <tls@ietfa.amsl.com>; Wed, 20 May 2015 08:02:55 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.911
X-Spam-Level:
X-Spam-Status: No, score=-6.911 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, SPF_HELO_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] 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 wgu87yGH4GCW for <tls@ietfa.amsl.com>; Wed, 20 May 2015 08:02:54 -0700 (PDT)
Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D9DB01A883E for <tls@ietf.org>; Wed, 20 May 2015 08:02:53 -0700 (PDT)
Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) by mx1.redhat.com (Postfix) with ESMTPS id 46819AC7D2; Wed, 20 May 2015 15:02:53 +0000 (UTC)
Received: from vpn-59-54.rdu2.redhat.com (vpn-59-54.rdu2.redhat.com [10.10.59.54]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t4KF2okf009543 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 20 May 2015 11:02:52 -0400
Message-ID: <1432134170.2926.9.camel@redhat.com>
From: Nikos Mavrogiannopoulos <nmav@redhat.com>
To: Watson Ladd <watsonbladd@gmail.com>
Date: Wed, 20 May 2015 17:02:50 +0200
In-Reply-To: <CACsn0ckaML0M_Foq9FXs5LA2dRb1jz+JDX7DUej_ZbuSkUB=tQ@mail.gmail.com>
References: <CACsn0ckaML0M_Foq9FXs5LA2dRb1jz+JDX7DUej_ZbuSkUB=tQ@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27
Archived-At: <http://mailarchive.ietf.org/arch/msg/tls/lyl9Pz4Kw20p7THhZU0jhJJMTI4>
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 15:02:55 -0000

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.