Submission Details
Severity:
[EVMN] No Check To Valudate `_to`
Summary
There is no check on address _to which could lead to unclaimable reward.
Vulnerability Details
The code on line 75 below pushes a reward that belongs to msg.sender to _to.
rewardsOwned[_to].push(rewardsOwned[msg.sender][_index]);
However, there is no check whether _to is a valid address. If _to is a zero address, then the reward is unclaimable.
Impact
A reward can become unclaimable.
Tools Used
Manual review.
Recommendations
Consider adding a check to prevent a zero address on _to.
Rewards breakdown
nSLOC
86This contest has a flat reward structure with the following payouts:
100 EXP
20 EXP
2 EXP
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