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 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...

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...

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...

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...

SelfBurn lpToken may create bad debt

Handle jonah1005 Vulnerability details Impact Users can create bad debt by burning their lpToken. Bad debt of the system would increase the utilization rate and hence increase the interest rate of the counterpart token. It would be a reasonable action to burn lp if the user is no longer profitabl...

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...

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...

YieldSourcePrizePool_canAwardExternal does not work

Handle cmichel Vulnerability details The idea of YieldSourcePrizePoolcanAwardExternal seems to be to disallow awarding the interest-bearing token of the yield source, like aTokens, cTokens, yTokens. "@dev Different yield sources will hold the deposits as another kind of token: such a Compound's...

Users can avoid paying borrowing interest after the fyToken matures

Handle shw Vulnerability details Impact According to the protocol design, users have to pay borrowing interest when repaying the debt with underlying tokens after maturity. However, a user can give his vault to Witch and then buy all his collateral using underlying tokens to avoid paying the...

Incompatability with deflationary / fee-on-transfer tokens

Handle cmichel Vulnerability details Vulnerability Details The DInterest.deposit function takes a depositAmount parameter but this parameter is not the actual transferred amount for fee-on-transfer / deflationary or other rebasing tokens. Impact The actual deposited amount might be lower than the...

Longer maturity leads to lower returns

Handle cmichel Vulnerability details Vulnerability Details The LinearDecayInterestModel computes the interestAmount on a deposit as depositAmount moneyMarketInterestRatePerSecond IRMultiplier depositPeriodInSeconds where the IRMultiplier is a function of the depositPeriodInSeconds computed in:...

Military Cryptanalytics, Part III

The NSA has just declassified and released a redacted version of Military Cryptanalytics, Part III, by Lambros D. Callimahos, October 1977. Parts I and II, by Lambros D. Callimahos and William F. Friedman, were released decades ago -- I believe repeatedly, in increasingly unredacted form -- and...

Election Security: Beyond Mail-In Voting

As a highly publicized event, every four years the U.S presidential election comes with inevitable security risks — and interest from high-level hackers and sophisticated cybercriminals looking to sway its results. The upcoming election ups the stakes — it has captured the attention of everyone...

Pioneer Kitten APT Sells Corporate Network Access

An APT group known as Pioneer Kitten, linked to Iran, has been spotted selling corporate-network credentials on hacker forums. The credentials would let other cybercriminal groups and APTs perform cyberespionage and other nefarious cyber-activity. Pioneer Kitten is a hacker group that specializes...

Upcoming Speaking Engagements

This is a current list of where and when I am scheduled to speak: I'm being interviewed on "Hacking in the Public Interest" as part of the Black Hat Webcast Series, on Thursday, April 16, 2020 at 2:00 PM EDT. The list is maintained on this page...

Social Engineering Based on Stimulus Bill and COVID-19 Financial Compensation Schemes Expected to Grow in Coming Weeks

Given the community interest and media coverage surrounding the economic stimulus bill currently being considered by the United States House of Representatives, we anticipate attackers will increasingly leverage lures tailored to the new stimulus bill and related recovery efforts such as stimulus...

Beers with Talos Ep. #74: Impacting civil society

Beers with Talos BWT Podcast episode No. 74 is now available. Download this episode and subscribe to Beers with Talos: If iTunes and Google Play aren't your thing, click here. Recorded March 2, 2020 We open up the show with a sugary sweet poem before talking about RSA and our annual trip through...

Katie Moussouris: The Bug Bounty Conflict of Interest

Since the launch of the Hack the Pentagon program in 2016, bug bounty programs continue to increase in popularity – however, as more programs are created, some companies are forgetting the real reason behind bug bounties. Instead of aiming to make their systems more secure, companies are viewing...