highReentrancyEVM-Solidity
Biconomy: `FeeRefund.tokenGasPriceFactor` is not included in signed transaction data allowing the submitter to steal funds
- Payout
- $0
- Protocol
- Biconomy
- Disclosed
- Mar 3, 2023
- Source
- code4rena
In Biconomy SmartAccount, relayers execute user transactions and receive token refunds calculated via the formula `(gasUsed + baseGas) * gasPrice / tokenGasPriceFactor`. While user signatures authorise transaction parameters to prevent relayer overcharging, `t …
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References
- https://github.com/code-423n4/2023-01-biconomy-findings/issues/123
- https://github.com/code-423n4/2023-01-biconomy-findings
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