First Flight #2: Puppy Raffle

Summary

The selectWinner function lacks event emission, leading to a significant transparency and traceability issue for users and external applications interacting with the contract. This omission hampers the ability to verify the raffle's results.

Vulnerability Details

1. Lack of Transparency:
   Without Events, it becomes challenging for users, interfaces, and external applications to track when a winner has been selected and the prize has been sent.

2. Difficulty in Verification:
   Events provide an efficient way to verify actions on-chain.The absence of events means that verifying the selection of a winner and the proper distribution of prizes becomes more complex and less straightforward.

Impact

Verification challenges

Tools Used

Foundry, manual

Recommendations

Emit Events for Significant Actions: Update the selectWinner function to emit events when significant actions occur, such as when a winner is selected, when the prize is sent, and when the game state is reset.