Flash loan price manipulation in Well.sol

Lines of code Vulnerability details Impact Line 214 of Well.sol calculates the price of tokens to tokens in the pool based on the balances at a single point in time. Pool balances at a single point in time can be manipulated with flash loans, which can skew the numbers to the extreme. The single...

LP pricing formula is vulnerable to flash loan manipulation

Lines of code Vulnerability details Impact The LP pricing formula used in the buyQuote, sellQuote, addQuote, removeQuote functions of Pair.sol contract is vulnerable to flash loan manipulation. Proof of Concept The baseTokenReserves calculates the current balance of base token reserves. This...

an attacker can take out flash loan and cause users not to be able to redeem their tokens because of undflow or divsion by zero

Lines of code Vulnerability details Impact An attacker can take out a flash loan and cause the state variable redeemBase=1 causing users who call this function to get dosed and since users can't call this function after the attacker makes the reedem function unuseable which can cause funds to be...

currentLoanOwner can manipulate loanInfo when any lenders try to buyout

Lines of code Vulnerability details Impact If an attacker already calls lend to lend to a loan, the attacker can manipulate loanInfo by reentrancy attack when any lenders try to buyout. The attacker can set bad values of lendInfo e.g. very long duration, and 0 interest rate that the lender who...

Flash loan price manipulation in purchasePyroFlan()

Handle sirhashalot Vulnerability details Impact The comment on line 54 of FlanBackstop.sol states "the opportunity for price manipulation through flash loans exists", and I agree that this is a serious risk. While the acceptableHighestPrice variable attempts to limit the maximum price change of t...