CVE-2018-12703: Improper Input Validation

The approveAndCallcode function of a smart contract implementation for Block 18 18T, an tradable Ethereum ERC20 token, allows attackers to steal assets e.g., transfer the contract's balances into their account because the callcode i.e., spender.callextraData is not verified, aka the "evilReflex"...

PT-2018-11342

Name of the Vulnerable Software and Affected Versions Block 18 18T smart contract implementation affected versions not specified Description The issue concerns the approveAndCall function in a smart contract implementation, which allows attackers to steal assets by transferring the contract's...