CVE-2019-25220

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link 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
Configurations

Configuration 1 (hide)

cpe:2.3:a:bitcoin:bitcoin_core:*:*:*:*:*:*:*:*
History

22 May 2025, 16:56

Type Values Removed Values Added
References () https://bitcoincore.org/en/2024/09/18/disclose-headers-oom - () https://bitcoincore.org/en/2024/09/18/disclose-headers-oom - Vendor Advisory
References () https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures - () https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures - Third Party Advisory
References () https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-October/017354.html - () https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-October/017354.html - Mailing List
First Time Bitcoin bitcoin Core
Bitcoin
CPE cpe:2.3:a:bitcoin:bitcoin_core:*:*:*:*:*:*:*:*

18 Nov 2024, 17:35

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5
CWE CWE-770

18 Nov 2024, 17:11

Type Values Removed Values Added
Summary
  • (es) Bitcoin Core anterior a 24.0.1 permite a atacantes remotos provocar una denegación de servicio (falla del demonio) a través de una inundación de cadenas de encabezado de baja dificultad (también conocido como un ataque de "expansión del ancho de la cadena") porque un nodo no verifica primero que una cadena presentada tenga suficiente trabajo antes de comprometerse a almacenarla.

18 Nov 2024, 04:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-11-18 04:15

Updated : 2025-05-22 16:56

NVD link : CVE-2019-25220

Mitre link : CVE-2019-25220

CVE.ORG link : CVE-2019-25220

JSON object : View

Products Affected

bitcoin

  • bitcoin_core
CWE
CWE-770

Allocation of Resources Without Limits or Throttling