Should a Chainlink aggregator become stuck in a stale state then TwapOracle will become irrecoverably broken

Handle TomFrench Vulnerability details Impact Inability to call consult on the TwapOracle and so calculate the exchange rate between USDV and VADER. Proof of Concept Should any of the Chainlink aggregators used by the TwapOracle becomes stuck in such a state that the check on L143-146 of...

unstake(): validatorSharesRemove should be calculated after updateValidator() is called

Handle hickuphh3 Vulnerability details Impact When unstaking from an enabled validator, the number of validator shares to remove should be calculated using the updated exchange rate. Otherwise, more validator shares are removed than required. Proof of Concept We utilise the example found in the...

ChainLink price data could be stale

Handle cmichel Vulnerability details Vulnerability Details There is no check in ExchangeRate.buildExchangeRate if the return values indicate stale data. This could lead to stale prices according to the Chainlink documentation: under current notifications: "if answeredInRound roundId could indicat...

Insufficient validation of rate value

Handle JMukesh Vulnerability details Impact it lack the checking of the value that it is fresh or not, if data is not fresh it can affect exchange rate. these following condition should be met to ensure that data is fresh requireupdateTime != 0, "Incomplete round"; requireansweredInRound = roundI...

TokenToLock default value

Handle cmichel Vulnerability details The PoolBase.TokenToLockXRate function returns the "Current exchange rate from token to lockToken". It does not specify the precision and according to the documentation, it sounds like one just has to multiply this value by any token amount to get the...

Exchange rate. All currency - Dangerous filesystem permissions, WebView code execution vulnerabilities

HackApp vulnerability scanner discovered that application Exchange rate. All currency published at the 'play' market has multiple vulnerabilities...

Russian Hackers Manipulate Ruble-Dollar Exchange Rate with Malware

Russian Group of Hackers reportedly cracked into the Kazan-based Energobank and messed up with the Ruble-Dollar exchange rates. In Feb 2015, a hacking group, known by the name METEL, successfully breached into the Russian Regional Bank for just 14 minutes and caused the exchange rate to fluctuate...