Submission Details
Severity:
Random Number Generator function can be manipulated
Summary
Random Number Generator function can be manipulated.
Vulnerability Details
msg.sender, block.timestamp and block.difficulty can be manipulated by the validator.
Impact
Validator can manipulate the Random Number Generation function to win lottery.
Tools Used
Manual Review
Recommendations
Use oracle 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
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