Index mint and burn calls can be front run

Lines of code Vulnerability details Impact Both in the mint and burn cases all the user supplied / due to a user assets can be stolen by an attacker, who detects correspondingly asset transfer calls / Index token transfer call and front runs Index contract's mint / burn call with own address as a...

IndexLogic: An attacker can mint tokens for himself using assets deposited by other users

Lines of code Vulnerability details Impact In the mint function of the IndexLogic contract, users are required to transfer assets to vToken in advance, and then call the mint function to mint tokens. The attacker can monitor the asset balance in the vToken contract. When the balance is greater th...

MarginAccount.sol - Asset transfer to insuranceFund is lost.

Lines of code Vulnerability details Impact MarginAccount.sol - Line 377, token asset is transferred into insuranceFund but not found any function to transfer asset out of insuranceFund. Proof of Concept Add any ERC20 token to Collateral list Call settleBadDebt Recommended Mitigation Steps Add...

Destroy can avoid the bulk of fees

Lines of code Vulnerability details Impact A user can destroy their NFTs and not pay fees on most of their assets. Proof of concept Alice has an NFT portfolio with 100 gwei dai and 100 gwei uni. Alice calls destroy on this NFT with buy token marked as dai. We would expect after this destroy step...

Unauthorized assertGovernanceApproved

Handle pauliax Vulnerability details Impact function assertGovernanceApproved is public and unauthorized with an arbitrary "sender" parameter. Anyone can invoke it and transfer assets from an arbitrary user: function assertGovernanceApproved address sender, address target, bool emergency public...

YLCToken has a flawed logic vulnerability

YLCToken is an Ether-based digital currency. An integer overflow vulnerability exists in the 'sell' function of YLCToken's smart contract implementation. An attacker could exploit this vulnerability to prevent the seller from obtaining the assets due to the exchange...

Nasdaq to Use Bitcoin-style Blockchain to Record Shareholder Votes

The Nasdaq stock exchange and the Republic of Estonia have announced the use of Blockchain-based technology to allow shareholders of companies to e-vote in shareholder meetings even when they're abroad, according to Nasdaq's press release. Global stock market giant is developing an electronic...