First Flight #2: Puppy Raffle

Summary

The function enterRaffle employs a nested loop to check for duplicate players, which can be computationally expensive and potentially lead to denial-of-service (DOS).

Vulnerability Details

The contract's approach to checking for duplicate players in the function enterRaffle with a nested loop becomes inefficient as the players array grows, potentially opening the door to DOS attacks.

Impact

Inefficient duplicate player checks can lead to higher gas costs and DOS vulnerabilities if the array size becomes significant.

Tools Used

Manual Review

Recommendations

Enhance efficiency and mitigate DOS risks by implementing a more efficient algorithm