First Flight #2: Puppy Raffle

Summary

We are using a outdated compiler version in the code.

Vulnerability Details

The usage of a outdated compiler version isn't a vulnerability in itself but it could lead to bugs not being discovered or prevented.

Impact

Normally this would be classified as a low severity.
But in this case it is a medium severity that could also be escalated to a high severity in my opinion.
In this particular code there are some critical bugs that could have been prevented by using a newer version of the solidity compiler.

Tools Used

Vs Code
Solidity Compiler docs/github

Recommendations

Always make sure to use the newest compiler version as they have the best protection as of date.
Bugs like overflow etc can be easity prevented by using the newest compiler versions.