Re: [quicwg/base-drafts] handling of coalesced packets with decryption errors creates DoS opportunity (#2308)
Marten Seemann <notifications@github.com> Mon, 07 January 2019 05:47 UTC
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Subject: Re: [quicwg/base-drafts] handling of coalesced packets with decryption errors creates DoS opportunity (#2308)
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> That could be true, though I am still not sure if we need to talk specifically about the attack. I was not suggesting to add language about this attack. My suggestion was to stop processing a datagram once unprotecting one of the QUIC packets fails, although you have the keys available for that encryption level. > For example, an attacker can also send a packet that successfully decrypts, that contains many tiny CRYPTO frames (4-bytes each). I'd assume that processing of that would be more costly than AEAD-decrypting every 35 bytes. I don't understand this. Why is processing CRYPTO frames expensive? In my implementation, assembling stream (and crypto stream) data is not an expensive operation. -- 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/2308#issuecomment-451828441
- [quicwg/base-drafts] handling of coalesced packet… Marten Seemann
- Re: [quicwg/base-drafts] handling of coalesced pa… Kazuho Oku
- Re: [quicwg/base-drafts] handling of coalesced pa… Marten Seemann
- Re: [quicwg/base-drafts] handling of coalesced pa… Kazuho Oku
- Re: [quicwg/base-drafts] handling of coalesced pa… Marten Seemann
- Re: [quicwg/base-drafts] handling of coalesced pa… Kazuho Oku
- Re: [quicwg/base-drafts] handling of coalesced pa… ianswett
- Re: [quicwg/base-drafts] handling of coalesced pa… Igor Lubashev
- Re: [quicwg/base-drafts] handling of coalesced pa… Martin Thomson
- Re: [quicwg/base-drafts] handling of coalesced pa… MikkelFJ
- Re: [quicwg/base-drafts] handling of coalesced pa… Martin Thomson
- Re: [quicwg/base-drafts] handling of coalesced pa… Igor Lubashev
- Re: [quicwg/base-drafts] handling of coalesced pa… ianswett
- Re: [quicwg/base-drafts] handling of coalesced pa… Martin Thomson
- Re: [quicwg/base-drafts] handling of coalesced pa… Kazuho Oku
- Re: [quicwg/base-drafts] handling of coalesced pa… MikkelFJ
- Re: [quicwg/base-drafts] handling of coalesced pa… Christian Huitema
- Re: [quicwg/base-drafts] handling of coalesced pa… MikkelFJ
- Re: [quicwg/base-drafts] handling of coalesced pa… Christian Huitema
- Re: [quicwg/base-drafts] handling of coalesced pa… MikkelFJ
- Re: [quicwg/base-drafts] handling of coalesced pa… Kazuho Oku
- Re: [quicwg/base-drafts] handling of coalesced pa… Christian Huitema
- Re: [quicwg/base-drafts] handling of coalesced pa… Kazuho Oku
- Re: [quicwg/base-drafts] handling of coalesced pa… Jana Iyengar
- Re: [quicwg/base-drafts] handling of coalesced pa… Kazuho Oku
- Re: [quicwg/base-drafts] handling of coalesced pa… Jana Iyengar
- Re: [quicwg/base-drafts] handling of coalesced pa… Christian Huitema
- Re: [quicwg/base-drafts] handling of coalesced pa… Kazuho Oku
- Re: [quicwg/base-drafts] handling of coalesced pa… MikkelFJ
- Re: [quicwg/base-drafts] handling of coalesced pa… Igor Lubashev
- Re: [quicwg/base-drafts] handling of coalesced pa… MikkelFJ
- Re: [quicwg/base-drafts] handling of coalesced pa… Lars Eggert
- Re: [quicwg/base-drafts] handling of coalesced pa… Eric Kinnear
- Re: [quicwg/base-drafts] handling of coalesced pa… Jana Iyengar