Sparkn

Summary

No supporter is able to find a solution to a problem.

Vulnerability Details

If a contest is created and funded, there is no way to refund. Therefore, it becomes necessary for at least one supporter to find a solution to a problem for the proper functioning of the protocol. If none of the supporters is able to find a solution, the sponsor funds will be locked as there will be no winner. This can happen if:

• There is an exceptionally tough-to-solve problem or,

• there is a problem that is not solvable or,

• there is a problem that will take a lot of time to be solved ( more than the MAX_CONTEST_PERIOD ).

Impact

This leads to loss of sponsor funds as the funds will be locked forever.

Tools Used

Manual review and VS Code

Recommendations

1, A mapping of sponsors and their funding can be maintained and there can be a withdraw function for the sponsors to withdraw their funding if there is no solution even after the MAX_CONTEST_PERIOD.

Or

2, A withdraw function can be made available for the owner that can be called after the MAX_CONTEST_PERIOD and because the owner is a trusted role, the owner can use this fund for sponsoring some other contest.