Aave V3
Aave is a decentralized non-custodial liquidity protocol where users can participate as suppliers or borrowers in a common pool. Suppliers provide liquidity to earn a passive income, while borrowers are able to borrow in an overcollateralized (perpetually) or undercollateralized (one-block liquidity) fashion.
Collateral Deposit
The block state of the market where collateral is deposited must be updated to the latest status.
O
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Collateral deposits must not be allowed when the protocol is in a paused state.
O
There are separate pause and freeze functions.
Collateral Withdraw
Users can withdraw collateral only within the limits that do not exceed the set Loan-to-Value (LTV) ratio.
O
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The block state of the market where collateral is withdrawn must be updated to the latest status.
O
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Borrow
Collateral deposits must not be allowed when the protocol is in a paused state.
O
There are separate pause and freeze functions.
The borrower must be registered in the relevant market.
O
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After executing the loan, the market's total borrow amount must not exceed the set borrow cap.
O
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Borrowers cannot exceed the Loan-to-Value (LTV) ratio relative to their collateral.
O
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Before executing a loan, the target market's block state must be updated to the latest status.
O
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Repay
The block state of the repayment market must be updated to the latest status.
O
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Repaying more than the borrowed amount is not allowed.
O
If the input amount for repayment exceeds the limit, it attempts to repay the user's total debt.
Liquidation
The liquidator can only liquidate borrowers whose Loan-to-Value (LTV) ratio exceeds the limit, resulting in a liquidity shortfall.
O
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The liquidator's repayment amount must not exceed the close factor relative to the borrower's total borrow amount.
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Both the market for the borrowed asset and the collateral asset must be updated with the latest block information.
O
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The amount of collateral the liquidator receives cannot exceed the total collateral balance of the borrower.
O
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The liquidator and the borrower cannot be the same account.
X
This feature is not checked.
The collateral and borrowed assets involved in the liquidation must be under the same administrative entity.
O
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Interest and Reward
The borrow interest rate must not exceed the set maximum value.
O
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During interest calculation, related state variables like total reserves, total borrows, and market indices must be updated to their latest statuses.
O
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For fixed-point arithmetic, steps should be taken to prevent rounding issues in low decimal places, such as using correct operation order or a fixed-point library.
O
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Oracle
The price of the underlying asset retrieved from the oracle must not be zero; if the price is zero, the transaction should be halted.
O
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It verifies that the oracle value is up-to-date.
X
It uses the latestAnswer function, which is not recommended by third parties, and does not check if the data is up-to-date.
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