Scary Fraud Ensues When ID Theft & Usury Collide

Whats worse than finding out that identity thieves took out a 546 percent interest payday loan in your name? How about a 900 percent interest loan? Or how about not learning of the fraudulent loan until it gets handed off to collection agents? One readers nightmare experience spotlights what can...

TimeswapConvenience.sol#borrowGivenDebt() Attacker can increase state.y to an extremely large value with a dust amount of assetOut

Handle WatchPug Vulnerability details This issue is similar to the two previous issues related to state.y manipulation. Unlike the other two issues, this function is not on TimeswapPair.sol but on TimeswapConvenience.sol, therefore this can not be solved by adding onlyConvenience modifier...

Manipulation of the Y State Results in Interest Rate Manipulation

Handle Rhynorater Vulnerability details Impact Due to lack of constraints on user input in the TimeswapPair.solmint function, an attacker can arbitrarily modify the interest rate while only paying a minimal amount of Asset Token and Collateral Token. Disclosure: This is my first time attempting...

5 Cybersecurity Trends to Watch in 2022

No one could have predicted the sheer chaos the cybersecurity industry would experience over the course of 2021. Record-annihilating numbers of ransomware attacks, SolarWinds’ supply-chain havoc and most recently, the discovery of Log4j by…Minecraft gamers. All of it would have sounded too wild f...

Aave's share tokens are rebasing breaking current strategy code

Handle cmichel Vulnerability details When depositing into Aave through the AaveYield.lockTokens contract strategy, one receives the sharesReceived amount corresponding to the diff of aToken balance, which is just always the deposited amount as aave is a rebasing token and 1.0 aToken = 1.0...

Fee calculation is slightly off

Handle gzeon Vulnerability details Impact The fee calculation uint256 timeDiff = block.timestamp - lastFee; uint256 feePct = timeDiff licenseFee / ONEYEAR; uint256 fee = startSupply feePct / BASE - feePct; tries to calculate a fee such that fee/supply+fee = %fee using a simple interest formula i....

AaveVault does not update TVL on deposit/withdraw

Handle cmichel Vulnerability details Aave uses rebasing tokens which means the token balance aToken.balanceOfthis increases over time with the accrued interest. The AaveVault.tvl uses a cached value that needs to be updated using a updateTvls call. This call is not done when depositing tokens whi...

Twitter Bans Users From Posting 'Private Media' Without a Person's Consent

Twitter on Tuesday announced an expansion to its private information policy to include private media, effectively prohibiting the sharing of photos and videos without express permission from the individuals depicted in them with an aim to curb doxxing and harassment. "Beginning today, we will not...

Curve Metapool does not support rebasing token

Handle gzeon Vulnerability details Impact For interest baring token, Curve use another version of the contract with consideration of underlying asset. The metapool contracts does not support such behaviour. Proof of Concept Actually it is written in Curve's doc Token balances must not change...

Early small positions may not be able to be liquidated

Handle WatchPug Vulnerability details In the current implementation, new borrows will be charged a 0.5% interest right away. Making the borrower be recorded a 100.5% amount as debt. However, the pre-charged 0.5% interest is not included in the vault's debts. As a result, early small positions in ...

Liquidated positions can potential have non-zero debts, making users who deposit to the positions suffer from unfair debt

Handle WatchPug Vulnerability details In the current implementation, new borrows will be charged a 0.5% interest right away. Making the borrower be recorded a 100.5% amount of debt. However, when a position got liquidated, the unrealized interest may still remain in the position while the...

borrow must accrueInterest first

Handle cmichel Vulnerability details The UToken.borrow function first checks the borrowed balance and the old credit limit before accruing the actual interest on the market: // @audit this uses the old value requireborrowBalanceViewmsg.sender + amount + fee = amount + fee, "UToken: The loan amoun...

Change in interest rate can disable repay of loan

Handle pmerkleplant Vulnerability details Impact The ability of a borrower to repay a loan is disabled if the interest rate is set too high by the InterestRateModel. However, there is neither a check when setting the interest rate nor an indication in the IInterestRateModel's specs of this...

Shanghai Anywhere Technology Co., Ltd Soul APP has information leakage vulnerability

Soul APP is a social platform for Generation Z based on interest mapping to build relationships and gamified gameplay for product design. Ltd. Soul APP has an information leakage vulnerability, which can be exploited by attackers to obtain sensitive information...

Shanghai Anywhere Technology Co., Ltd Soul APP has a logic flaw vulnerability

Soul App is a social platform for Generation Z based on interest mapping to build relationships and gamified gameplay for product design. Ltd. Soul APP has a logic flaw vulnerability, which can be exploited by attackers to hijack the attack...

User can get more/less interest than required

Handle csanuragjain Vulnerability details Impact It seems that owner must not get interest for transfer fee which is collected using transferNotionalFee No interest is calculated on owner side before reducing the owner notional amount But this can simply be bypassed if owner adds new notional whi...

Transfer method doesn't consider gained interest correctly,

Handle pants Vulnerability details Impact transfer method doesn't consider gained interest correctly. For example, a user that gained 10% of interest and moves the LP tokens to another user might lose the gained interest. This is a severe bug and all other LP tokens out there manages the interest...

Reward computation is wrong

Handle cmichel Vulnerability details The LendingPair.accrueAccount function distribtues rewards before updating the cumulative supply / borrow indexes as well as the index + balance for the user by minting supply tokens / debt. This means the percentage of the user's balance to the total is not...

LendingPair.liquidateAccount does not accrue and update cumulativeInterestRate

Handle cmichel Vulnerability details The LendingPair.liquidateAccount function does not accrue and update the cumulativeInterestRate first, it only calls accrueAccountInterest which does not update and instead uses the old cumulativeInterestRate. Impact The liquidatee borrower's state will not be...

Total LP supply & total debt accrual is wrong

Handle cmichel Vulnerability details The total debt and total supply only increase when debt/supply is minted to the user when it should increase by the entire new interest amount on each accrual. function accrueAccountaddress account public distributeRewardaccount; // accrue only updates...