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Re: [TLS] The TLS_FALLBACK_SCSV time bomb (was: Re: Working Group Last Call for draft-ietf-tls-downgrade-scsv-00)

"Salz, Rich" <rsalz@akamai.com> Mon, 20 October 2014 21:02 UTC

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From: "Salz, Rich" <rsalz@akamai.com>
To: Andrei Popov <Andrei.Popov@microsoft.com>, Hubert Kario <hkario@redhat.com>
Date: Mon, 20 Oct 2014 17:02:00 -0400
Thread-Topic: [TLS] The TLS_FALLBACK_SCSV time bomb (was: Re: Working Group Last Call for draft-ietf-tls-downgrade-scsv-00)
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Subject: Re: [TLS] The TLS_FALLBACK_SCSV time bomb (was: Re: Working Group Last Call for draft-ietf-tls-downgrade-scsv-00)
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> >1.3 to 1.2. Over 10% of Internet web servers are intolerant to 1.3
> >ClientHello

Shrug, since it's not defined I don't think it matters that much.

> 1.3 to 1.2 could be protected by an extension; I think SCSV is only needed to
> protect the downgrade from TLS1.0 to SSL3.

I would rather not have two mechanisms that do the exact same thing.

--  
Principal Security Engineer, Akamai Technologies
IM: rsalz@jabber.me Twitter: RichSalz

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