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

CVE-2019-25220 concerns Bitcoin Core prior to 24.0.1. The issue arises when a node accepts a flood of low‑difficulty header chains and stores them without first verifying that the presented chain has enough work, enabling a denial of service (daemon crash). Public references in the connected data...