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CVE-2019-25220

nvd nist
Published: Nov 18, 2024Modified: May 22, 2025

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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 (1)

Bitcoin
1 product
Bitcoin Core
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Bitcoin Core
Before 24.0.1

Related CWEs

CWE-770
Allocation of Resources Without Limits or Throttling
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References (3)

Source: cve@mitre.org
Vendor Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Mailing List

Timeline

No history available yet.