Re: [Resolverless-dns] Paper on Resolver-less DNS

Erik Sy <sy@informatik.uni-hamburg.de> Tue, 27 August 2019 21:20 UTC

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From: Erik Sy <sy@informatik.uni-hamburg.de>
To: resolverless-dns@ietf.org
References: <CAHbrMsBhR1yaLxQk7wZk54Jdf5nvkS03KC3UTae0Famu2+SV8g@mail.gmail.com> <4568720.uvMTqBdgP4@linux-9daj> <fb12f102-714d-95cc-c6cc-0871a2df9f50@informatik.uni-hamburg.de> <34813218.VKkrhzyXsx@linux-9daj> <ae355776-a1bb-cf23-f380-133439661d1f@informatik.uni-hamburg.de> <1171283855.590.1566558699991@appsuite-gw1.open-xchange.com> <a8d9398b-4fea-0a1e-3fa7-5954d001f9ea@informatik.uni-hamburg.de> <1405682425.665.1566561941610@appsuite-gw1.open-xchange.com> <220061a8-608c-0a87-4656-213c87979284@informatik.uni-hamburg.de> <849BE7D4-A07E-496B-B413-E1C979390DA8@osterweil.net> <b2b3e56a-c577-f08a-627a-f54e2e6fadb6@informatik.uni-hamburg.de>
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Date: Tue, 27 Aug 2019 23:20:07 +0200
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Subject: Re: [Resolverless-dns] Paper on Resolver-less DNS
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Hi Eric and Viktor,

On 8/25/19 22:40, Erik Sy wrote:
> Here is a quote from Chris Palmer on this issue[1]:
>
> "The strength of PKP ― run-time enforcement with hard-fail — is also
> exactly its weakness. Some people are OK with the risk, but overall I
> think the market has spoken: HPKP has seen close to no adoption. People
> don't want to brick their sites.
>
> As for DANE, it would at best have the same strength/weakness of HPKP,
> but with the additional problems of DNSSEC."
>
> In total, it seems like Chrome does not want to deploy DANE.
> Erik
>
> 1:
> https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/he9tr7p3rZ8/eNMwKPmUBAAJ

It seems to me, that both of you are OK with the risk of DNSSEC + DANE
TLSA leading to hard failures. I share the view of Chris Palmer, that
the security improvements of Public Key Pinning (PKP) in browsers are
not worth the caused usability issues.

I like to point out, that resolver-less DNS can be extended to support
DNSSEC + DANE TLSA as a validation mechanism for DNS records. Thus, in
case browser vendors decide to support DNSSEC + DANE TLSA the browsers
can receive the corresponding records also via resolver-less DNS.

Erik