Submission Details
Severity:
You can buy loan with less loan to collateral ratio than what is specified for the pool.
Summary
When calling buyLoan() function of Lender.sol to buy a loan after an auction is started, there is no check for maxLoanRatio.
Vulnerability Details
User may buy loan whose loan to collateral ratio is less than what they specified in their pools maxLoanRatio.
Impact
Pool lender may not get specified collateral for the loan, which also creates an issue in giving the loans to another pool.
Tools Used
Manual Review
Recommendations
Calculate the current loan ratio of the loan being auctioned and check it with the max loan ratio of the pool before completing the buyLoan function transaction.
Prize pool breakdown
Total prize
20,000 USDC
nSLOC
70628 USDC / LOC
18,000 USDC
2,000 USDC
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