Re: [Acme] Looking for comments on https://github.com/ietf-wg-acme/acme/issues/215

Philipp Junghannß <teamhydro55555@gmail.com> Sat, 03 December 2016 21:48 UTC

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From: Philipp Junghannß <teamhydro55555@gmail.com>
Date: Sat, 03 Dec 2016 22:47:21 +0100
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To: Patrick Figel <patrick@figel.email>
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Cc: "Salz, Rich" <rsalz@akamai.com>, IETF ACME <acme@ietf.org>
Subject: Re: [Acme] Looking for comments on https://github.com/ietf-wg-acme/acme/issues/215
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well I think it's a bad idea. as I commented in the issue directly
TLS-SNI-01 fell straight on the face because of the way servers may handle
hosts without a setting.

2016-12-03 13:35 GMT+01:00 Patrick Figel <patrick@figel.email>:

> I wrote together some thoughts on this proposal here[1]. In short, I think
> it's
> vulnerable to the default vhost attack that caused simpleHTTP to be
> dropped, and
> it's not compatible with the "Agreed-Upon Change to Website" method
> described
> in the BRs, which would prevent adoption by any publicly-trusted CA.
>
> The proposed workaround for this issue[2] would make this a variant of
> tls-sni,
> AIUI, which already has these pseudo-hostnames, so I think we're down to
> "allow
> other ports" here, and I believe there's consensus against this.
>
> Patrick
>
> [1]: https://mailarchive.ietf.org/arch/msg/acme/
> QiXu84RJtURfGVVEYfSpRdtcU5o
> [2]: https://mailarchive.ietf.org/arch/msg/acme/
> NFKJ5sqBePGlJglKRwodc5m4ZEo
>
> On Sat, Dec 3, 2016 at 3:18 AM, Salz, Rich <rsalz@akamai.com> wrote:
> > With the couple of recent pull requests, the document editors are about
> to
> > close all but on issue, #215.
> >
> >
> >
> > Does the WG have any feelings on this?  Is it something we need to
> address
> > NOW, or can we add a new type of challenge later on if there’s interest?
> >
> >
> >
> > Please reply on-list by earl next week.
> >
> >
> >
> > --
> >
> > Senior Architect, Akamai Technologies
> >
> > Member, OpenSSL Dev Team
> >
> > IM: richsalz@jabber.at Twitter: RichSalz
> >
> >
> >
> >
> > _______________________________________________
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> > Acme@ietf.org
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> >
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