Submission Details
Severity:
Rarity can be pre determined
Summary
The rarity of the NFT to be minted can be pre calculated by user.
Vulnerability Details
A user can calculate and see if the rarity of the token will be convenient for them. Combined with the fact that the winner can be calculated beforehand, they could only participate to win and when the rarity is convenient.
Impact
Low
Tools Used
Foundry
Recommendations
Used Chainlink's VRF to generate random number.
Updates
Lead Judging Commences
Hamiltonite about 2 years ago
Submission Judgement Published Assigned finding tags:
weak-randomness
Root cause: bad RNG Impact: manipulate winner
Rewards breakdown
nSLOC
143This contest has a flat reward structure with the following payouts:
100 EXP
20 EXP
2 EXP
Live
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