Re: [OSPF] OSPF - Owning the Routing Table Attack

Michael Barnes <mjbarnes@cisco.com> Fri, 02 August 2013 17:56 UTC

Return-Path: <mjbarnes@cisco.com>
X-Original-To: ospf@ietfa.amsl.com
Delivered-To: ospf@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4FA4211E8113 for <ospf@ietfa.amsl.com>; Fri, 2 Aug 2013 10:56:29 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -10.599
X-Spam-Level:
X-Spam-Status: No, score=-10.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, RCVD_IN_DNSWL_HI=-8]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qaWgYzPmpKeb for <ospf@ietfa.amsl.com>; Fri, 2 Aug 2013 10:56:25 -0700 (PDT)
Received: from mtv-iport-4.cisco.com (mtv-iport-4.cisco.com [173.36.130.15]) by ietfa.amsl.com (Postfix) with ESMTP id 2BB9011E80EE for <ospf@ietf.org>; Fri, 2 Aug 2013 10:56:25 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1259; q=dns/txt; s=iport; t=1375466185; x=1376675785; h=message-id:date:from:mime-version:to:subject:references: in-reply-to:content-transfer-encoding; bh=hOs4T4VWoJP1qP27CbDKroESnv36z5EB9LsSPkeHvTU=; b=E/SIaI7RGrir8Qf9JfDwHMS9T0fBgY+kcM9pgWntlCSoril4dOFc5xKl ZQiMpl51qq2eFHP9BMrxsrGlgdfZWzobZsxHBoz7RugiW2F6U7Gvnf2Qz nI/ulGQIt+ZujHmX/nR2hA3tzlNTmNrgmAIldh5mF1beWFZbEbtCmSi8Q w=;
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: AjMFAFTy+1GrRDoH/2dsb2JhbABagwY1Ab9TgR0WdIIkAQEBBAEBATU2ChELGAkWDwkDAgECARUwEwYCAQGICw25EJAfFoN3A4kqjjWBKoR6iyqDNxw
X-IronPort-AV: E=Sophos;i="4.89,802,1367971200"; d="scan'208";a="88219700"
Received: from mtv-core-2.cisco.com ([171.68.58.7]) by mtv-iport-4.cisco.com with ESMTP; 02 Aug 2013 17:56:24 +0000
Received: from [10.21.84.168] (sjc-vpn4-1193.cisco.com [10.21.84.168]) by mtv-core-2.cisco.com (8.14.5/8.14.5) with ESMTP id r72HuNJE005377 for <ospf@ietf.org>; Fri, 2 Aug 2013 17:56:23 GMT
Message-ID: <51FBF2C7.2080706@cisco.com>
Date: Fri, 02 Aug 2013 10:56:23 -0700
From: Michael Barnes <mjbarnes@cisco.com>
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130110 Thunderbird/17.0.2
MIME-Version: 1.0
To: ospf@ietf.org
References: <CAPLq3UNWoff2pSe9fkWsBmfW3b-CfKe9iUiPMWBNZKe=jXn0KQ@mail.gmail.com>
In-Reply-To: <CAPLq3UNWoff2pSe9fkWsBmfW3b-CfKe9iUiPMWBNZKe=jXn0KQ@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Subject: Re: [OSPF] OSPF - Owning the Routing Table Attack
X-BeenThere: ospf@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: The Official IETF OSPG WG Mailing List <ospf.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ospf>, <mailto:ospf-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/ospf>
List-Post: <mailto:ospf@ietf.org>
List-Help: <mailto:ospf-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ospf>, <mailto:ospf-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 02 Aug 2013 17:56:29 -0000

I don't think he has discovered anything revolutionary. It has been 
widely known for many years that if someone has control of a router, or 
links which are not protected by authentication, that there are many 
forms of mischief (e.g. insider attacks).

I found this slide from an IETF presentation in 1998 which lists a 
number of previous papers:
https://www.ietf.org/proceedings/46/slides/ospf-sec/tsld003.htm

Some of the following slides explain a few possible exploits, all of 
which are "insider" attacks.

There is a well known IETF document which lists a number of OSPF 
vulnerabilities, however it is not a complete list:
http://tools.ietf.org/id/draft-ietf-rpsec-ospf-vuln-02.txt

So I don't find this "briefing" very interesting. What would be 
interesting to me, would be a way to attack OSPF when SHA-256 
authentication is deployed, beyond the known replay attacks.

Regards,
Michael

On 08/02/2013 09:41 AM, Glen Kent wrote:
> Hi,
>
> Does anybody have details on what this OSPF vulnerability is?
>
> https://www.blackhat.com/us-13/briefings.html#Nakibly
>
> Glen
>
>
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www.ietf.org/mailman/listinfo/ospf
>