CVE-2019-25220
Bitcoin Core Denial of Service Remote Buffer Overflow
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.
INFO
Published Date :
Nov. 18, 2024, 4:15 a.m.
Last Modified :
May 22, 2025, 4:56 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-25220.
| URL | Resource |
|---|---|
| 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 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-25220 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-25220 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 22, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:bitcoin:bitcoin_core:*:*:*:*:*:*:*:* versions up to (excluding) 24.0.1 Added Reference Type MITRE: https://bitcoincore.org/en/2024/09/18/disclose-headers-oom Types: Vendor Advisory Added Reference Type MITRE: https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures Types: Third Party Advisory Added Reference Type MITRE: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-October/017354.html Types: Mailing List -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 18, 2024
Action Type Old Value New Value Added CWE CISA-ADP CWE-770 Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H -
CVE Received by [email protected]
Nov. 18, 2024
Action Type Old Value New Value Added 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. Added Reference MITRE https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures [No types assigned] Added Reference MITRE https://bitcoincore.org/en/2024/09/18/disclose-headers-oom [No types assigned] Added Reference MITRE https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-October/017354.html [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-25220 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-25220
weaknesses.