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alert functionality in bitcoind and Bitcoin-Qt before 0.7.0 supports different character representations of the same signature data, but relies on a hash of this signature, which allows remote attackers to cause a denial of service (resource consumption) via a valid modified signature for a circulating alert.","Type":"Description","Title":"CVE-2012-4684"},{"CveYear":"2012","CveId":"4684","Ordinal":"2","NoteData":"2013-03-12","Type":"Other","Title":"Published"}]}}}