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zwt

low

startingblocknumber

Summary

Check starting blocknumber

Vulnerability Detail

The startingTimestamp is checked in require but the startingBlockNumber is not checked in the function.

Impact

Invalid or unsafe starting blocknumber may have risks.

Code Snippet

https://github.com/ethereum-optimism/optimism/blob/3f4b3c328153a8aa03611158b6984d624b17c1d9/packages/contracts-bedrock/contracts/L1/L2OutputOracle.sol#L107-L118

Tool used

Manual Review

Recommendation