clober-dex / coupon-finance

Coupon Finance Solidity Contracts

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Fix: Check underflow at `_getLiquidationAmount` #83

Closed detectivekim closed 11 months ago

detectivekim commented 1 year ago

Description

Because of below code

https://github.com/clober-dex/coupon-finance/blob/5dcb28ec126e1bedbd20687e309a79b40a7cafad/contracts/LoanPositionManager.sol#L279

We must check underflow.

https://github.com/clober-dex/coupon-finance/blob/5dcb28ec126e1bedbd20687e309a79b40a7cafad/contracts/LoanPositionManager.sol#L248