Blockchain security startup PeckShield has come across a critical vulnerability in multiple Ethereum smart contracts (based on the ERC20 protocol) which results in integer overflow – a common issue which occurs when computers deal with numeric values outside of the range that can be represented with a given number of bits. The researchers have noted that their study found that the bug is present in a number of tokens, including UGToken, SMART, MTC, FirstCoin, GG Token, CNY Token, MESH and SMT tokens. According to the researchers, the bug makes it possible for attackers to “transfer huge amount of tokens to an address…
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