CVEvulnerability

CVE-2019-25220

7.5 HIGH Published 2024-11-18 Modified 2026-06-17 Official page ↗

Status: Analyzed
Published: 2024-11-18
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0): 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses: CWE-770

Description

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.

Affected configurations

• bitcoin bitcoin core (< 24.0.1)

Weakness · CWE (1)

CWE-770 Allocation of Resources Without Limits or Throttling weakness

References

https://bitcoincore.org/en/2024/09/18/disclose-headers-oom Vendor Advisory
https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures Third Party Advisory
https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-October/017354.html Mailing List

CVE-2019-25220

Description

Affected configurations

Related

Weakness · CWE (1)

References