Submission Details
Severity:
Reentrancy Vulnerability in `updateCharacteristics`
Summary
The updateCharacteristics function of RamNFT is called multiple times within increaseValuesOfParticipants. If RamNFT contract allows for external calls or state changes, this could be exploited.
Vulnerability Details
import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";
contract ChoosingRam is ReentrancyGuard {
...
function increaseValuesOfParticipants(uint256 tokenIdOfChallenger, uint256 tokenIdOfAnyPerticipent)
public
RamIsNotSelected
nonReentrant
{
...
}
}
Impact
This could lead to reentrancy attacks where state changes are manipulated.
Tools Used
Manual review
Recommendations
Add a ReentrancyGuard to the ChoosingRam contract.
Rewards breakdown
nSLOC
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100 EXP
20 EXP
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