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From: Peter Todd <pete@petertodd.org>
To: Antoine Riard <antoine.riard@gmail.com>,
	Bitcoin Protocol Discussion
	<bitcoin-dev@lists.linuxfoundation.org>
Cc: security@ariard.me,
	"lightning-dev\\\\@lists.linuxfoundation.org"
	<lightning-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] Full Disclosure: CVE-2023-40231 / CVE-2023-40232 / CVE-2023-40233 / CVE-2023-40234 "All your mempool are belong to us"
Date: Fri, 27 Oct 2023 00:43:30 +0000	[thread overview]
Message-ID: <ZTsHsn5s/wswxlIo@petertodd.org> (raw)
In-Reply-To: <CALZpt+GfM=7XyxXzcC5mMskVJg6L4sH61-_2H9+FHHJU0KN+Aw@mail.gmail.com>

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On Sat, Oct 21, 2023 at 09:05:35PM +0100, Antoine Riard via bitcoin-dev wrote:
> In the meanwhile, lightning experts have already deployed mitigations which
> are hardening the lightning ecosystem significantly in face of simple or
> medium attacks. More advanced attacks can only be mounted if you have
> sufficient p2p and mempool knowledge as was pointed out by other bitcoin
> experts like Matt or Peter (which take years to acquire for average bitcoin
> developers) and the months of preparation to attempt them.

To be clear, I am not making any claims about how easy this attack is to pull
off. Indeed, there are probably even cases where it happens by accident. Eg
imagine a node with a HTLC-preimage that happens to be offline and then online
at the right time to broadcast a HTLC-preimage redemption transaction with a
higher fee than the timeout transaction. If the other node happens to go
offline at the right time, after broadcasting the timeout transaction, it may
not notice the HTLC-preimage in the mempool, and thus fail to redeem it.

OP_Expire would help avoid this situation, by making it impossible to redeem
the HTLC-preimage after the timeout.

-- 
https://petertodd.org 'peter'[:-1]@petertodd.org

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  reply	other threads:[~2023-10-27  0:43 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-10-16 16:57 [bitcoin-dev] Full Disclosure: CVE-2023-40231 / CVE-2023-40232 / CVE-2023-40233 / CVE-2023-40234 "All your mempool are belong to us" Antoine Riard
2023-10-16 19:13 ` Peter Todd
2023-10-16 22:10   ` Matt Morehouse
2023-10-17  1:11   ` Antoine Riard
2023-10-20 10:47     ` Peter Todd
2023-10-20 11:18       ` Jochen Hoenicke
2023-10-16 22:51 ` Olaoluwa Osuntokun
2023-10-17  7:21 ` [bitcoin-dev] [Lightning-dev] " ziggie1984
2023-10-17 10:34   ` ZmnSCPxj
2023-10-17 18:34     ` Antoine Riard
2023-10-20 10:31     ` Peter Todd
2023-10-20 11:03       ` Peter Todd
2023-10-20 18:35         ` Matt Morehouse
2023-10-20 21:05           ` Matt Corallo
2023-10-21  0:15             ` Peter Todd
2023-10-21  1:03               ` Matt Corallo
2023-10-21  1:25                 ` Peter Todd
2023-10-21  1:55                   ` Matt Corallo
2023-10-21  2:43                     ` Peter Todd
2023-10-23 16:09                       ` Matt Corallo
2023-10-17 17:47   ` Antoine Riard
2023-10-17 18:47     ` Antoine Riard
2023-10-18  0:17 ` Matt Corallo
2023-10-18  2:57   ` Antoine Riard
2023-10-19  8:12     ` Bastien TEINTURIER
2023-10-19 16:23   ` Matt Morehouse
2023-10-19 17:22     ` Antoine Riard
2023-10-19 17:53       ` Matt Morehouse
2023-10-19 19:33         ` Antoine Riard
2023-10-21  0:18           ` Olaoluwa Osuntokun
2023-11-17 22:36             ` Antoine Riard
2023-10-19 18:02     ` Matt Corallo
2023-10-20  6:56 ` [bitcoin-dev] " Antoine Riard
2023-10-21 20:05   ` Antoine Riard
2023-10-27  0:43     ` Peter Todd [this message]
2023-11-02  4:46     ` Antoine Riard
2023-10-21  0:09 ` [bitcoin-dev] OP_Expire and Coinbase-Like Behavior: Making HTLCs Safer by Letting Transactions Expire Safely Peter Todd
2023-10-21  8:58   ` David A. Harding
2023-10-21 10:31     ` Peter Todd
2023-10-22  8:30   ` vjudeu
2023-10-23 11:10   ` [bitcoin-dev] [Lightning-dev] " ZmnSCPxj
2023-10-23 15:45     ` Peter Todd
2023-11-02  5:24   ` [bitcoin-dev] " Antoine Riard
2023-11-02  6:26     ` Peter Todd
2023-11-02 17:07       ` Matt Morehouse
2023-11-03  5:27         ` Antoine Riard
2023-11-03  5:25       ` Antoine Riard
2023-11-04  7:26         ` Peter Todd
2023-11-06 18:45           ` Antoine Riard
2023-11-07 11:11             ` [bitcoin-dev] [Lightning-dev] " ZmnSCPxj
2023-11-07 15:44               ` Antoine Riard
2023-11-08  0:51             ` [bitcoin-dev] " Peter Todd
2023-11-08  2:06               ` Peter Todd
2023-11-13  2:18                 ` Antoine Riard
2023-11-14 19:50                   ` Peter Todd
     [not found]                     ` <CALZpt+H38cU9L8kq0mSYCDirzL39fxhdoz4pAPiS8dGJP8akKg@mail.gmail.com>
2023-11-15 17:53                       ` [bitcoin-dev] Fwd: " Antoine Riard
2023-10-22  4:49 ` [bitcoin-dev] Full Disclosure: CVE-2023-40231 / CVE-2023-40232 / CVE-2023-40233 / CVE-2023-40234 "All your mempool are belong to us" Nadav Ivgi
2023-10-23  8:49   ` David A. Harding

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