Sparkn

Summary

Lack of Access Control in _distribute Function Vulnerability in Distributor Contract

Vulnerability Details

The vulnerability arises from the _distribute function being marked as internal in the Distributor contract. This means that any external contract or address with knowledge of the implementation address could potentially call this function directly, bypassing intended access control mechanisms.

Impact

Unauthorized callers could trigger the _distribute function, leading to unintended token distributions or failed validations. This could potentially disrupt the intended operation of the contract.

Tools Used

Manual code review and analysis of access control mechanisms in the _distribute function.

Recommendations

To mitigate this vulnerability, follow these recommendations:

1. Use Access Modifiers: Mark the _distribute function as private to prevent external contracts or addresses from calling it directly.

2. Access Control Checks: Ensure that only authorized and intended contracts or functions are able to call the _distribute function. Implement appropriate access control checks in the contract's external and public functions.

3. Documentation: Clearly document the intended usage of functions and their access restrictions. This will help prevent unintended calls and provide clarity to developers interacting with the contract.