mediumFront-running / MEVEVM-Solidity
Biconomy: Griefing attacks on `handleOps` and `multiSend` logic
- Payout
- $0
- Protocol
- Biconomy
- Disclosed
- Mar 3, 2023
- Source
- code4rena
ERC-4337 bundlers and relayers aggregate multiple UserOperations into a single batch transaction using handleOps or multiSend. An attacker can front-run the relayer's batch by executing a single UserOperation from that batch in a separate transaction. Because …
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References
- https://github.com/code-423n4/2023-01-biconomy-findings/issues/499
- https://github.com/code-423n4/2023-01-biconomy-findings
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