Re: [quicwg/base-drafts] Backoff of CONNECTION_CLOSE needs to be a MUST (#3095)
Kazuho Oku <notifications@github.com> Wed, 16 October 2019 15:10 UTC
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From: Kazuho Oku <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] Backoff of CONNECTION_CLOSE needs to be a MUST (#3095)
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> Servers don't need to pad Initial packets and servers drop Initials less than 1200 bytes, so I believe the other 'Server' would drop the Initial CONNECTION_CLOSE and this would stop quickly. Oh I missed that point. Thank you for pointing it out. Though it is still possible to mount this attack by sending an invalid 0-RTT packet Consider the case where an attacker obtains a session ticket from both servers beforehand, and sends datagrams to the servers, each consisting of Initial and 0-RTT packets (of which 0-RTT packet contains an invalid frame). Then, assuming that both servers accept 0-RTT, they would send to each other a series of Initial, Handshake, and 1-RTT packets, of which the 1-RTT packet would contain an CONNECTION_CLOSE frame. So that would cause a ping-pong. -- 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/issues/3095#issuecomment-542749202
- [quicwg/base-drafts] Backoff of CONNECTION_CLOSE … Kazuho Oku
- Re: [quicwg/base-drafts] Backoff of CONNECTION_CL… ianswett
- Re: [quicwg/base-drafts] Backoff of CONNECTION_CL… Kazuho Oku
- Re: [quicwg/base-drafts] Backoff of CONNECTION_CL… Kazuho Oku
- Re: [quicwg/base-drafts] Backoff of CONNECTION_CL… Lars Eggert
- Re: [quicwg/base-drafts] Backoff of CONNECTION_CL… Martin Thomson
- Re: [quicwg/base-drafts] Backoff of CONNECTION_CL… Jana Iyengar
- Re: [quicwg/base-drafts] Backoff of CONNECTION_CL… Jana Iyengar
- Re: [quicwg/base-drafts] Backoff of CONNECTION_CL… Martin Thomson
- Re: [quicwg/base-drafts] Backoff of CONNECTION_CL… Kazuho Oku
- Re: [quicwg/base-drafts] Backoff of CONNECTION_CL… Martin Thomson