Description
The Bitcoin protocol, as used in bitcoind before 0.4.4, wxBitcoin, Bitcoin-Qt, and other programs, does not properly handle multiple transactions with the same identifier, which allows remote attackers to cause a denial of service (unspendable transaction) by leveraging the ability to create a duplicate coinbase transaction.
References
- https://en.bitcoin.it/wiki/BIP_0030
- https://github.com/sipa/bitcoin/commit/a206b0ea12eb4606b93323268fc81a4f1f952531
- [bitcoin-development] 20120228 Duplicate transactions vulnerability mailing-list
- https://en.bitcoin.it/wiki/CVEs
- https://bugs.gentoo.org/show_bug.cgi?id=407793
- https://bitcointalk.org/index.php?topic=67738.0
- http://r6.ca/blog/20120206T005236Z.html