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Re: [TLS] Working Group Last Call for draft-ietf-tls-downgrade-scsv-00

Florian Weimer <fweimer@redhat.com> Wed, 15 October 2014 15:45 UTC

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Date: Wed, 15 Oct 2014 17:41:34 +0200
From: Florian Weimer <fweimer@redhat.com>
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Subject: Re: [TLS] Working Group Last Call for draft-ietf-tls-downgrade-scsv-00
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On 09/26/2014 06:00 AM, Joseph Salowey (jsalowey) wrote:
> This is an announcement for the working group last call for draft-ietf-tls-downgrade-scsv-00.  Please review the document and send your comments to the list by Friday, October 17, 2014.

One more issue: The draft is silent on how to respond to an 
inappropriate_fallback alert.  Considering that the draft was prompted 
by inappropriate responses to handshake alerts (and network failures 
during the handshake), this omission is curious.

Will we add

         TLS_FALLBACK_NO_THIS_TIME_I_REALL_MEAN_IT_SCSV   {0x56, 0x01}

in a few months or years?  Where does it end?

-- 
Florian Weimer / Red Hat Product Security

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