Bitcoin ABC Patches Critical Vulnerability in Bitcoin Cash Mining Software

cryptocurrency miningCryptocurrency development team Bitcoin ABC has released a patch to address a critical vulnerability in bitcoin cash mining software.

According to Bitcoin ABC’s incident report, the vulnerability would have allowed an attacker to initiate a split in the bitcoin cash network.

To accomplish this, the attacker would have constructed a malicious transaction that included the bitflag of “0x20” in the signature hash type. The transaction would have been accepted by Bitcoin-ABC 0.17.0 and mined into a block but rejected by all other bitcoin cash mining software — including previous versions of Bitcoin-ABC.

Bitcoin ABC was made aware of the vulnerability on April 26, and developers quietly distributed a patch to mining pool operators and “verified bitcoin cash miners” before disclosing the potential exploit to the general public…

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