CVE-2019-25220

Bitcoin Core before 24.0.1 allows remote attackers to cause a denial of service daemon crash via a flood of low-difficulty header chains aka a "Chain Width Expansion" attack because a node does not first verify that a presented chain has enough work before committing to store it...

CVE-2019-25220

Bitcoin Core versions before 24.0.1 are vulnerable to a denial of service (daemon crash) due to a Chain Width Expansion attack. The root cause is that the node fails to verify if a presented chain has sufficient work before committing to store it, allowing a remote attacker to crash the service b...