New burnOverflow Bug Identified in Multiple ERC20 Smart Contracts (CVE-2018-11239)

Our vulnerability-scanning system at PeckShield has so far discovered several dangerous smart contract vulnerabilities batchOverflow1, proxyOverflow2, transferFlaw3, ownerAnyone4, multiOverflow5. Some of them could be used by attackers to generate tokens out of nowhere while others can be used to...

CVE-2018-11239

CVE-2018-11239 affects Hexagon (HXG), an Ethereum ERC20 token. The vulnerability is an integer overflow in the _transfer function, where _value + burnPerTransaction can overflow, bypassing balance checks and enabling an attacker to inflate the recipient’s balance. PeckShield reports a real-world ...