fkie_cve-2019-25220
Vulnerability from fkie_nvd
Published
2024-11-18 04:15
Modified
2025-05-22 16:56
Severity ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| bitcoin | bitcoin_core | * |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:bitcoin:bitcoin_core:*:*:*:*:*:*:*:*",
"matchCriteriaId": "55E9245E-1473-4830-BAD2-7E2BF9E3D298",
"versionEndExcluding": "24.0.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "Bitcoin Core anterior a 24.0.1 permite a atacantes remotos provocar una denegaci\u00f3n de servicio (falla del demonio) a trav\u00e9s de una inundaci\u00f3n de cadenas de encabezado de baja dificultad (tambi\u00e9n conocido como un ataque de \"expansi\u00f3n del ancho de la cadena\") porque un nodo no verifica primero que una cadena presentada tenga suficiente trabajo antes de comprometerse a almacenarla."
}
],
"id": "CVE-2019-25220",
"lastModified": "2025-05-22T16:56:23.983",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
},
"published": "2024-11-18T04:15:04.107",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "https://bitcoincore.org/en/2024/09/18/disclose-headers-oom"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures"
},
{
"source": "cve@mitre.org",
"tags": [
"Mailing List"
],
"url": "https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-October/017354.html"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-770"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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