Sparkn

CodeFox Inc.
DeFiFoundryProxy
15,000 USDC
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Submission Details
Severity: low

Contract lacks proper event emission for significant contract interactions, making it difficult to track and audit contract activities.

0xVinylDavyl

Summary

The contract lacks proper event emission for significant contract interactions, making it difficult to track and audit contract activities.

Vulnerability Details

The contract does not emit events for important contract interactions, which reduces transparency and hinders the ability to monitor and audit the contract's behavior. Events play a crucial role in providing insight into contract state changes and activities.

// Vulnerable Code: Lack of Event Emission
function distribute(address token, address[] memory winners, uint256[] memory percentages, bytes memory data) public {
require(msg.sender == address(proxyFactory), "Distributor__OnlyFactoryAddressIsAllowed");
require(winners.length == percentages.length, "Distributor__MismatchedArrays");
​
// ...
​
for (uint256 i = 0; i < winners.length; i++) {
MockERC20(token).transfer(winners[i], (MockERC20(token).balanceOf(address(this)) * percentages[i]) / 10000);
}
​
// Vulnerable Code: Lack of Event Emission
// Missing emit statement for Distributed event
}
​

Impact

The absence of proper event emission limits the ability to monitor and audit contract activities. This can hinder the identification of contract state changes and make it challenging to debug, analyze, and track contract interactions.

Tools Used

Manual

Recommendations

  1. Ensure that important contract interactions, state changes, and significant activities are accompanied by the emission of relevant events.

  2. Emit detailed event information that includes relevant data, such as contract addresses, involved parties, and values changed.

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