Aave DIVA Wrapper

Summary

https://github.com/Cyfrin/2025-01-diva/blob/5b7473c13adf54a4cd1fd6b0f37ab6529c4487dc/contracts/src/AaveDIVAWrapper.sol#L21

https://github.com/Cyfrin/2025-01-diva/blob/5b7473c13adf54a4cd1fd6b0f37ab6529c4487dc/contracts/src/AaveDIVAWrapper.sol#L37

The AaveDIVAWrapper contract lacks sufficient event emissions for critical state-modifying functions. This deficiency can hinder transparency, auditing, and real-time monitoring, making it difficult for stakeholders to detect and respond to significant operations or anomalies.

Vulnerability Details

No Event Emission for Key Functions:

Several state-modifying functions, such as registerCollateralToken, addLiquidity, removeLiquidity, redeemPositionToken, and claimYield, do not emit events after successful execution.

Batch operations like batchRegisterCollateralToken and batchAddLiquidity also lack event emissions, leaving no trace of the changes they apply.

Transparency Issues:

Without events, it becomes challenging to track the flow of funds, detect unauthorized operations, or debug unexpected behavior.

**Operational Risks:**Failure to emit events means external applications (like monitoring dashboards or off-chain systems) cannot easily track or respond to important operations.

Impact

Reduced Traceability: The absence of events makes it difficult to trace historical actions, potentially complicating audits and investigations into suspicious activity.

Monitoring Challenges: Real-time monitoring tools relying on event logs cannot detect or act upon contract operations.

Compliance Risks: Inadequate event emission may lead to compliance challenges, especially in systems requiring extensive logging and audit trails.

Tools Used

Manual

Recommendations

Add Event Definitions:

Define events for all significant state-modifying operations. For example: