CVE-2019-25220

HIGH EPSS 51.4%
Published Nov 18, 20241y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Nov 18, 2024 1y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
51.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-770

Affected Products 1

VendorProductVersionRange
bitcoinbitcoin_core* <24.0.1

References 3

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.