Submission Details
Severity:
Reentrancy possible in `refund`
Summary
If a contract having a fallback/receive function invokes refund, a reentrancy is possible, which could lead to all funds being drained in PuppyRaffle.
Vulnerability Details
The attacker can intercept the funds and call back refund until all Ether in the contract are wiped out.
Impact
Systemic impact on the protocol and all its actors.
Tools Used
Recommendations
Use Checks Effects Interactions pattern in refund.
Updates
Lead Judging Commences
Hamiltonite almost 2 years ago
Submission Judgement Published Assigned finding tags:
reentrancy-in-refund
reentrancy in refund() function
Rewards breakdown
nSLOC
143This contest has a flat reward structure with the following payouts:
100 EXP
20 EXP
2 EXP
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