CVE-2012-1909 Information

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.

Reference

http://r6.ca/blog/20120206T005236Z.html http://sourceforge.net/mailarchive/forum.php?thread_name=CAPg2BsBhmGHnMResVxPDZdfpmWTb9uqD0RrQD7oSXBQq7oHpm8g40mail.gmail.com&forum_name=bitcoin-development https://bitcointalk.org/index.php?topic=67738.0 https://bugs.gentoo.org/show_bug.cgi?id=407793 https://en.bitcoin.it/wiki/BIP_0030 https://en.bitcoin.it/wiki/CVEs https://github.com/sipa/bitcoin/commit/a206b0ea12eb4606b93323268fc81a4f1f952531