First Flight #2: Puppy Raffle

Summary

Out of gas

Vulnerability Details

enterRaffle() traverse all registered participants and search for duplicate addresses. Whenever a new participant enter the raffle, it will be compared with each existing participant in the array to ensure there are no duplicates. As the number of participants increases, the gas consumption can become more expensive each time a new collateral address is added to the array.

Impact

Potentially leading to an 'Out of Gas' error or reaching the 'Block Gas Limit' in the worst-case scenario.

Tools Used

Recommendations

Refactor the code
using a more efficient method