[quicwg/base-drafts] handling of coalesced packets with decryption errors creates DoS opportunity (#2308)
Marten Seemann <notifications@github.com> Mon, 07 January 2019 04:33 UTC
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From: Marten Seemann <notifications@github.com>
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Subject: [quicwg/base-drafts] handling of coalesced packets with decryption errors creates DoS opportunity (#2308)
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The spec says > For example, if decryption fails (because the keys are not available or any other reason) [...], the receiver MAY either discard or buffer the packet for later processing and MUST attempt to process the remaining packets. It makes sense to continue processing if the keys are not available. However, if the keys are available, and decryption fails, this means that the peer sent an invalid packet (or that we're dealing with an on-path attacker, which we can't do anything against anyway). It seems that it would be equally valid to stop processing the datagram in that case. Since it's possible to coalesce about 70 QUIC packets into a single 1200 byte datagram, an attacker could cause a peer to attempt 70 AEAD operations with a single datagram. -- 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
- [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