Submission Details
Severity:
Lender can front-run borrowers to pay more interest
Summary
Lender can front-run borrower and apply unexpected interest rate for loan.
Vulnerability Details
scenario: Alice wants to borrow a loan from a pool that has interest rate of 10% , Bob (lender of the pool) front-runs Alice and sets pool interest rate to maxInterestRate (for example in this case 15%) . So Alice takes loan with a higher interest rate than she expected.
Impact
The borrower ends up with a loan that has a higher interest rate than expected.
Tools Used
Manual Review
Recommendations
During borrow take a max interest rate parameter as max interest that the borrower is willing to pay.
Prize pool breakdown
Total prize
20,000 USDC
nSLOC
70628 USDC / LOC
18,000 USDC
2,000 USDC
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