Summary

The MIP-MI17.sol contract lacks proper access control measures, allowing any address to call sensitive functions like sweepAll. This vulnerability poses a risk of unauthorized modifications or misuse of the contract's functionality, potentially leading to financial losses or disruptions in protocol operations.

Vulnerability Details

The sweepAll function is publicly accessible, meaning any address can call it without restriction. This lack of access control allows unauthorized users to sweep all underlying tokens from the contract to their address, bypassing any intended restrictions or permissions.

POC

Creating an hypothetical scenario to illustrate the vulnerability:

Impact

• Unauthorized users can exploit the sweepAll function to transfer all underlying tokens from the contract to their address.

• This could result in significant financial losses for the protocol and its users if a malicious actor gains access to the function and drains the contract's funds.

• Additionally, unauthorized modifications or misuse of the contract's functionality can disrupt protocol operations and undermine user trust.

Tools Used

Manual

Recommendations

1. Implement access control measures to restrict sensitive functions like sweepAll to authorized users only.

2. Use role-based access control (RBAC) or permissioned roles to grant specific privileges to trusted addresses while preventing unauthorized access.

3. Regularly review and update access control mechanisms to adapt to changing security requirements and address emerging threats.

4. Consider implementing a timelock or multisig mechanism for critical operations to add an additional layer of security and oversight.