Checkpreimage(.) had a 1/65k probability to fail. If an attacker can guess what the spent of an utxo will be, then he can spend it in a way this next spent fails (unless the transaction is malleated). This attack is realistic, it takes 3min to craft a malicious spent.I got a 312$payout (2BSV) for this "0day". So if you find one too, you should probably be a white hat.
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A 1/65k probability to fail
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Checkpreimage(.) had a 1/65k probability to fail. If an attacker can guess what the spent of an utxo will be, then he can spend it in a way this next spent fails (unless the transaction is malleated). This attack is realistic, it takes 3min to craft a malicious spent.I got a 312$payout (2BSV) for this "0day". So if you find one too, you should probably be a white hat.