ArkProject: NFT Bridge

Summary

The requestDeserialize function in the Starklane contract is critical for processing serialized requests, such as those involved in the cancelRequest function. This function is responsible for converting serialized data back into a structured format, but insufficient error handling can result in various security vulnerabilities, potentially compromising the contract's integrity and the accuracy of its operations.

Vulnerability Details

The requestDeserialize function does not adequately verify the integrity and correctness of the data it deserializes. If the data input to this function is malformed, improperly structured, or contains unexpected values, the function may return incorrect results without raising an error. This lack of thorough validation can lead to significant issues, including:

1. Processing Invalid Requests: Incorrectly deserialized data might cause the contract to process invalid or malicious requests, leading to unauthorized actions.

2. State Corruption: Malformed data might corrupt the internal state of the contract, particularly if unexpected values are accepted and processed without validation.

3. Re-entrancy Risks: If deserialized data does not adhere to the expected structure, it could potentially be exploited to trigger re-entrancy or other forms of attacks.

4. Silent Failures: Without proper error handling, the function might fail silently, making it difficult to detect and debug issues during execution.

Impact

This vulnerability could allow attackers to manipulate the data processed by the Starklane contract, potentially enabling unauthorized cancellations, withdrawals, or other harmful actions that could compromise the contract’s operation.

Tools Used

Manual Review

Recommendations

Input Validation: Implement rigorous checks on the input data passed to requestDeserialize. Ensure that all deserialized values are within expected ranges and conform to the required structure before processing them further.

• Error Handling: Introduce explicit error handling within the requestDeserialize function to catch and revert on any malformed or unexpected input data.

• Logging: Implement logging for deserialization errors to help in identifying and debugging issues more efficiently.

• Testing: Conduct thorough unit testing and security audits, including edge cases and malformed input scenarios, to ensure the robustness of the requestDeserialize function