Manual Review

A thorough line-by-line review was conducted on the codebase to identify potential malfunctions and vulnerabilities in Tozex's multisignature wallet implementation.

As the project at hand implements a multisignature wallet, intricate care was put into ensuring that the flow of funds & assets within the system conforms to the specifications and restrictions laid forth within the protocol's specification.

We validated that all state transitions of the system occur within sane criteria and that all rudimentary formulas within the system execute as expected. We pinpointed multiple vulnerabilities within the system around signer entry maintenance which could have had severe ramifications to its overall operation; we urge the Tozex team to promptly evaluate and remediate exhibits of major severity.

Additionally, the system was investigated for any other commonly present attack vectors such as re-entrancy attacks, mathematical truncations, logical flaws and ERC / EIP standard inconsistencies. The documentation of the project was satisfactory to the extent it need be.

A total of 15 findings were identified over the course of the manual review of which 6 findings concerned the behaviour and security of the system. The non-security related findings, such as optimizations, are included in the separate Code Style chapter.

The finding table below enumerates all these security / behavioural findings:

ID	Severity	Addressed	Title
MSW-01M			Potentially Incorrect Filters
MSW-02M			Bypass of Signer / Owner Restriction
MSW-03M			Improper Pagination Mechanism
MSW-04M			Incorrect Requirement Validation
MSW-05M			Inexistent Removal of Old Signers
MSW-06M			Weak Validation of Caller