Submission Details
Severity:
Weak randomness
Summary
Weak randomness used in MysteryBox::openBox means that block validators have influence over the rewards people can access.
Vulnerability Details
Weak randomness so a block validator can manipulate the rewards users get, which could be used to negatively impact victims and benefit the block validator's self interest.
Impact
High
Tools Used
Foundry
Recommendations
Use a decentralised oracle (chainlink vrf) for randomness
Rewards breakdown
nSLOC
86This contest has a flat reward structure with the following payouts:
100 EXP
20 EXP
2 EXP
Live
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