Re: [quicwg/base-drafts] Add initial threat model to security considerations (#2925)
Eric Kinnear <notifications@github.com> Wed, 11 March 2020 17:35 UTC
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Date: Wed, 11 Mar 2020 10:34:58 -0700
From: Eric Kinnear <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] Add initial threat model to security considerations (#2925)
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erickinnear commented on this pull request. > +Computing the server's first flight for a full handshake is potentially +expensive, requiring both a signature and a key exchange computation. In order +to prevent computational DoS attacks, QUIC incorporates a cheap token exchange +mechanism which allows servers to validate a client's IP address prior to doing +any expensive computations at the cost of a single round trip. After a +successful handshake, servers can issue new tokens to a client which will allow +new connection establishment without incurring this cost. + +#### On-Path Handshake Termination + +An on-path attacker can force the QUIC handshake to fail by replacing either the +client or server Initial messages with invalid messages. An off-path attacker +can also mount this attack by racing the Initials. Once valid Initial messages +have been exchanged, the remaining handshake messages are protected with the +handshake keys and an on-path attacker cannot force handshake failure, though +they can produce a handshake timeout by dropping packets. That could be a great thing to cover, can you file an issue to discuss whatever text should be here? -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/quicwg/base-drafts/pull/2925#discussion_r391144964
- [quicwg/base-drafts] Add initial threat model app… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Nick Banks
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Dmitri Tikhonov
- Re: [quicwg/base-drafts] Add initial threat model… Mike Bishop
- Re: [quicwg/base-drafts] Add initial threat model… Martin Thomson
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Mike Bishop
- Re: [quicwg/base-drafts] Add initial threat model… ianswett
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… mirjak
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Gorry Fairhurst
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Martin Thomson
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Mike Bishop
- Re: [quicwg/base-drafts] Add initial threat model… Martin Thomson
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… Martin Thomson
- Re: [quicwg/base-drafts] Add initial threat model… ianswett
- Re: [quicwg/base-drafts] Add initial threat model… Jana Iyengar
- Re: [quicwg/base-drafts] Add initial threat model… Martin Thomson
- Re: [quicwg/base-drafts] Add initial threat model… Martin Thomson
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… MikkelFJ
- Re: [quicwg/base-drafts] Add initial threat model… Eric Kinnear
- Re: [quicwg/base-drafts] Add initial threat model… MikkelFJ