YearnV2YieldSource wrong subtraction in withdraw

Handle cmichel Vulnerability details YearnV2YieldSource.withdrawFromVault uses a wrong subtraction. When withdrawing from the vault one redeems yTokens for tokens, thus the token balance of the contract should increase after withdrawal. But the contract subtracts the currentBalance from the...

usage of safeApprove

Handle pauliax Vulnerability details Impact depositInVault in contract YearnV2YieldSource calls safeApprove when the allowance is less than the token balance: if token.allowanceaddressthis, addressv token.balanceOfaddressthis token.safeApproveaddressv, typeuint256.max; This does not mean that the...