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.
- Score
- CVSS 3.1 7.5 High
- Status
- Analyzed - cve@mitre.org
- Published
- 2024-11-18
- Last modified
- 2024-11-18
- Weaknesses
- CWE-770
Affected products
References
- https://bitcoincore.org/en/2024/09/18/disclose-headers-oom
- https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures
- https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-October/017354.html
