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bitcoind and Bitcoin-Qt 0.8.0 and earlier allow remote attackers to cause a denial of service (electricity consumption) by mining a block to create a nonstandard Bitcoin transaction containing multiple OP_CHECKSIG script opcodes.
Source: MITRE View Analysis Description
Source: MITRE
Base Score: 7.8 HIGH Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C) (V2 legend) Impact Subscore: 6.9 Exploitability Subscore: 10.0
Access Vector (AV): Network Access Complexity (AC): Low Authentication (AU): None Confidentiality (C): None Integrity (I): None Availability (A): Complete Additional Information: Allows disruption of service
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