hard20 pts · first answer countssmart-contract-securitysignaturesmev

A permit that someone uses first

A contract's depositWithPermit calls token.permit(...) and then transferFrom. An attacker copies the permit signature from the mempool and submits it directly to the token first. What happens to the user?

A.They lose the tokens to the attackerB.The deposit succeeds and the attacker's call failsC.The token cancels both the permit and the depositD.Their deposit reverts because the permit nonce is used

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A permit that someone uses first

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