Re: [TLS] Consensus Call on draft-ietf-tls-dnssec-chain-extension
Paul Wouters <paul@nohats.ca> Mon, 16 April 2018 20:21 UTC
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Date: Mon, 16 Apr 2018 16:21:27 -0400
From: Paul Wouters <paul@nohats.ca>
To: TLS WG <tls@ietf.org>
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Subject: Re: [TLS] Consensus Call on draft-ietf-tls-dnssec-chain-extension
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On Mon, 16 Apr 2018, Viktor Dukhovni wrote: >> * We might want to say that if the TTL is zero then the clients MUST NOT >> pin and must clear any pin. And we might do this in spite of not >> describing any pinning semantics -- explicitly leaving pinning >> semantics to a future document. > > Exactly. I'd like to suggest that this is the most reasonable > common ground, and would urge the WG and authors to get behind > this as a consensus position. This seems dangerous. If an attacker can re-route and get a rogue cert, they can set TTL to 0, negating a previously set TTL, without requiring proof by presenting the denial-of-existence of the TLSA record. That is also a downgrade attack. How to go from TTL != 0 to TTL == 0 should be specified carefully, either in this document or its own document. The only known save way of going to TTL == 0 is by presenting DoE of TLSA records (but it does bind using the TLS extension to the existence of TLSA records) Paul
- [TLS] Consensus Call on draft-ietf-tls-dnssec-cha… Joseph Salowey
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Paul Wouters
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Richard Barnes
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Melinda Shore
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Martin Thomson
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Eric Rescorla
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Richard Barnes
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Eric Rescorla
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Eric Rescorla
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Richard Barnes
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Eric Rescorla
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Eric Rescorla
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Martin Thomson
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Paul Wouters
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Paul Wouters
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Paul Wouters
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Paul Wouters
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Ilari Liusvaara
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Eric Rescorla
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Eric Rescorla
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Eric Rescorla
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- [TLS] DPRIV has the downgrade too (Re: Consensus … Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Tim Hollebeek
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Willem Toorop
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Shumon Huque
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Paul Wouters
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Benjamin Kaduk
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Shumon Huque
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Benjamin Kaduk
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Shumon Huque
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… James Cloos
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Melinda Shore
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- [TLS] A new argument (Re: Consensus Call on draft… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Benjamin Kaduk
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Paul Wouters
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Richard Barnes
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Paul Wouters
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Richard Barnes
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Kathleen Moriarty
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Benjamin Kaduk
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Willem Toorop
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] [dane] Consensus Call on draft-ietf-tls… John Gilmore
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Ilari Liusvaara
- Re: [TLS] [dane] Consensus Call on draft-ietf-tls… Viktor Dukhovni
- Re: [TLS] [dane] Consensus Call on draft-ietf-tls… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Melinda Shore
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Martin Thomson
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Richard Barnes
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Melinda Shore
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Shumon Huque
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Martin Thomson
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Willem Toorop
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… James Cloos
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Eric Rescorla
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Eric Rescorla
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Eric Rescorla
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Melinda Shore
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Eric Rescorla
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Sam Hartman
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Jim Fenton
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Richard Barnes
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Bill Frantz
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Paul Wouters
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Joseph Salowey
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Richard Barnes
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Melinda Shore
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Paul Wouters
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Richard Barnes
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Richard Barnes
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Richard Barnes
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Richard Barnes
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Shumon Huque
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Peter Gutmann
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Nico Williams
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Joseph Salowey
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Viktor Dukhovni
- Re: [TLS] Consensus Call on draft-ietf-tls-dnssec… Joseph Salowey