Funds may be lost if processCalls is called from a contract

Lines of code Vulnerability details Impact In CrossChainRelayerArbitrum.processCalls, msg.sender is set as the address to receive any refund both excess fee refund and call value refund in the createRetryableTicket call. Arbitrium credits the refunded value to L2 balance, so if the user doesn't...

Replay Attack possible by processCalls function

Lines of code Vulnerability details Impact Calls can be processed multiple times Proof of Concept The processCalls function uses the require function to check whether the nonce and calls values have been relayed, but it does not check whether the sender value is the same as the msg.sender value...

Integer Overflow

Lines of code Vulnerability details Impact Potential integer overflow vulnerability in the relayCalls function. The function does not check for the maximum value of the gasLimit parameter, and if it is set to a value greater than the maxGasLimit, it will cause an integer overflow. Integer overflo...