CVE-2013-3219
bitcoind and Bitcoin-Qt 0.8.x before 0.8.1 do not enforce a certain block protocol rule, which allows remote attackers to bypass intended access restrictions and conduct double-spending attacks via a large block that triggers incorrect Berkeley DB locking in older product versions.
Date published : 2013-08-01
https://en.bitcoin.it/wiki/BIP_0050
https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures