Input validation

Frontier is Substrate's Ethereum compatibility layer. In the newly introduced signed Frontier-specific extrinsic for pallet-ethereum, a large part of transaction validation logic was only called in transaction pool validation, but not in block execution. Malicious validators can take advantage of...

CVE-2021-41138

CVE-2021-41138 concerns Frontier, Substrate’s Ethereum compatibility layer. A signed Frontier-specific extrinsic for pallet-ethereum caused many validation checks to run only during transaction pool validation, not during block execution, allowing malicious validators to include invalid transacti...