Vulnerability CVE-2012-1909
Published: 2012-08-06

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.

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Bitcoin -> Bitcoin-qt 
Bitcoin -> Bitcoind 
Bitcoin -> Wxbitcoin 

 References:
https://github.com/sipa/bitcoin/commit/a206b0ea12eb4606b93323268fc81a4f1f952531
https://en.bitcoin.it/wiki/CVEs
https://en.bitcoin.it/wiki/BIP_0030
https://bugs.gentoo.org/show_bug.cgi?id=407793
https://bitcointalk.org/index.php?topic=67738.0
http://sourceforge.net/mailarchive/forum.php?thread_name=CAPg%2BsBhmGHnMResVxPDZdfpmWTb9uqD0RrQD7oSXBQq7oHpm8g%40mail.gmail.com&forum_name=bitcoin-development
http://r6.ca/blog/20120206T005236Z.html
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