Re: [Acme] kinds of proof
Viktor Dukhovni <ietf-dane@dukhovni.org> Tue, 02 December 2014 02:54 UTC
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Date: Tue, 02 Dec 2014 02:54:38 +0000
From: Viktor Dukhovni <ietf-dane@dukhovni.org>
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Archived-At: http://mailarchive.ietf.org/arch/msg/acme/EnnOD9SqPOFOf8Wf8UN3c2543_8
Subject: Re: [Acme] kinds of proof
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On Tue, Dec 02, 2014 at 01:18:20AM +0000, Christian Huitema wrote: > > Yes, several CAs allow DNS based validation of control. I thought this too obvious to mention, I was talking *additional* verification methods other than DNS. > To belabor the obvious: if someone somehow controls the DNS entry > for the domain, they can put up a MITM attack and "insert" whatever > content is suitable for validation. That's not an attack. If you control the DNS, you control the domain, which is what DV is supposed to verify. I'd like to see is that resolvers used by CAs should support DNSSEC, and for signed domains apply the appropriate checks. Which then leaves room for MiTM attacks via the various DV email addresses, and port 80 checks, which perhaps should be re-considered when the candidate DV domain is signed. -- Viktor.
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- Re: [Acme] ACME or EST? Nico Williams
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- Re: [Acme] ACME or EST? Randy Bush
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- Re: [Acme] ACME or EST? Stephen Farrell
- Re: [Acme] ACME or EST? Phillip Hallam-Baker
- Re: [Acme] ACME or EST? Viktor Dukhovni
- Re: [Acme] ACME or EST? Christian Huitema
- [Acme] ACME or EST? Tony Arcieri
- Re: [Acme] ACME or EST? Phillip Hallam-Baker
- Re: [Acme] ACME or EST? Christian Huitema
- [Acme] kinds of proof (was: Re: ACME or EST?) Stephen Farrell
- Re: [Acme] kinds of proof (was: Re: ACME or EST?) Phillip Hallam-Baker
- Re: [Acme] kinds of proof Stephen Farrell
- Re: [Acme] kinds of proof Salz, Rich
- Re: [Acme] kinds of proof Paul Hoffman
- Re: [Acme] kinds of proof Eric Rescorla
- Re: [Acme] ACME or EST? Eliot Lear
- Re: [Acme] kinds of proof (was: Re: ACME or EST?) Viktor Dukhovni
- Re: [Acme] kinds of proof Phillip Hallam-Baker
- Re: [Acme] kinds of proof Paul Hoffman
- Re: [Acme] kinds of proof Paul Hoffman
- Re: [Acme] ACME or EST? Nico Williams
- Re: [Acme] kinds of proof Viktor Dukhovni
- Re: [Acme] kinds of proof Paul Hoffman
- Re: [Acme] kinds of proof Nico Williams
- Re: [Acme] kinds of proof Paul Hoffman
- Re: [Acme] ACME or EST? Randy Bush
- Re: [Acme] kinds of proof Randy Bush
- Re: [Acme] ACME or EST? Richard Barnes
- Re: [Acme] ACME or EST? Randy Bush
- Re: [Acme] kinds of proof Viktor Dukhovni
- Re: [Acme] kinds of proof Paul Hoffman
- Re: [Acme] kinds of proof Viktor Dukhovni
- Re: [Acme] kinds of proof Paul Hoffman
- Re: [Acme] kinds of proof Tony Arcieri
- Re: [Acme] kinds of proof Eric Mill
- Re: [Acme] kinds of proof Randy Bush
- Re: [Acme] kinds of proof Peter Bowen
- Re: [Acme] kinds of proof Christian Huitema
- Re: [Acme] kinds of proof Viktor Dukhovni
- Re: [Acme] kinds of proof Peter Bowen
- Re: [Acme] kinds of proof Paul Hoffman
- Re: [Acme] kinds of proof Peter Bowen
- Re: [Acme] kinds of proof Paul Hoffman
- Re: [Acme] kinds of proof Phillip Hallam-Baker
- Re: [Acme] kinds of proof Trevor Freeman
- Re: [Acme] kinds of proof Randy Bush
- Re: [Acme] kinds of proof Martin Thomson