CVE-2016-6271
La librería Bzrtp (también conocida como libbzrtp) 1.0.x en versiones anteriores a 1.0.4 permite a atacantes man-in-the-middle llevar a cabo ataques de suplantación de identidad aprovechando una comprobación HVI desaparecida en la recepción de paquetes DHPart2.
CVSS
- Puntuación base
- 7.5
- Versión
- 3.0
- Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días
- 2.23 %
- Percentil entre todas las CVEs puntuadas
- 83
- Fecha de la puntuación
- 24/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Exploits públicos
Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.
- Prueba de concepto en GitHub (no verificada) · Lista de pruebas de concepto en GitHub
⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.
Tecnologías afectadas (1)
CWE
- CWE-254
Referencias
Mostrar las 6 referencias
- http://www.securityfocus.com/bid/95928
- https://github.com/BelledonneCommunications/bzrtp/commit/bbb1e6e2f467ee4bd7b9a8c800e4f07343d7d99b
- https://github.com/gteissier/CVE-2016-6271
- http://www.securityfocus.com/bid/95928
- https://github.com/BelledonneCommunications/bzrtp/commit/bbb1e6e2f467ee4bd7b9a8c800e4f07343d7d99b
- https://github.com/gteissier/CVE-2016-6271
JSON original (NVD)
Mostrar
{
"id": "CVE-2016-6271",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "LOW",
"availabilityImpact": "NONE",
"confidentialityImpact": "NONE"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"type": "Primary",
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"cvssData": {
"scope": "UNCHANGED",
"version": "3.0",
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"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
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}
],
"published": "2017-01-18T22:59:00.780",
"references": [
{
"url": "http://www.securityfocus.com/bid/95928",
"source": "cve@mitre.org"
},
{
"url": "https://github.com/BelledonneCommunications/bzrtp/commit/bbb1e6e2f467ee4bd7b9a8c800e4f07343d7d99b",
"tags": [
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],
"source": "cve@mitre.org"
},
{
"url": "https://github.com/gteissier/CVE-2016-6271",
"source": "cve@mitre.org"
},
{
"url": "http://www.securityfocus.com/bid/95928",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
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"tags": [
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"Patch"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://github.com/gteissier/CVE-2016-6271",
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-254"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "The Bzrtp library (aka libbzrtp) 1.0.x before 1.0.4 allows man-in-the-middle attackers to conduct spoofing attacks by leveraging a missing HVI check on DHPart2 packet reception."
},
{
"lang": "es",
"value": "La librería Bzrtp (también conocida como libbzrtp) 1.0.x en versiones anteriores a 1.0.4 permite a atacantes man-in-the-middle llevar a cabo ataques de suplantación de identidad aprovechando una comprobación HVI desaparecida en la recepción de paquetes DHPart2."
}
],
"lastModified": "2026-06-17T00:50:44.113",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
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"sourceIdentifier": "cve@mitre.org"
}