mediumInteger overflow/underflowOther
Kakarot: `decode_legacy_tx` allows validation of signatures with `chain_id` that are larger than felt, and overflows
- Payout
- $0
- Protocol
- Kakarot
- Disclosed
- Dec 10, 2024
- Source
- code4rena
Kakarot, a Cairo-coded EVM implementation on Starknet, failed to constrain the byte length of the legacy transaction chain_id in decode_legacy_tx. bytes_to_felt shifts an accumulator by 8 bits per byte without a length ceiling, so a chain_id supplied with data …
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References
- https://github.com/code-423n4/2024-09-kakarot-findings/issues/69
- https://github.com/code-423n4/2024-09-kakarot-findings
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