CVE-2018-0378
A vulnerability in the Precision Time Protocol (PTP) feature of Cisco Nexus 5500, 5600, and 6000 Series Switches running Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a lack of protection against PTP frame flood attacks. An attacker could exploit this vulnerability by sending large streams of malicious IPv4 or IPv6 PTP traffic to the affected device. A successful exploit could allow the attacker to cause a DoS condition, impacting the traffic passing through the device.
CVSS
- Versión: 3.0
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Puntuación base: 8.6
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 4.01%
- Percentil entre todas las CVEs puntuadas: 90
- Fecha de la puntuación: 7/10/2026
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).
Tecnologías afectadas (1)
CWE
- CWE-20
- CWE-20
Referencias
- http://www.securityfocus.com/bid/105669
- http://www.securitytracker.com/id/1041920
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nexus-ptp-dos
- http://www.securityfocus.com/bid/105669
- http://www.securitytracker.com/id/1041920
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nexus-ptp-dos
JSON original (NVD)
Mostrar
{
"id": "CVE-2018-0378",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2018-0378",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-11-25T18:52:52.259818Z"
}
}
],
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 7.8,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "NONE"
},
"acInsufInfo": false,
"impactScore": 6.9,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"cvssData": {
"scope": "CHANGED",
"version": "3.0",
"baseScore": 8.6,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 4,
"exploitabilityScore": 3.9
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "CHANGED",
"version": "3.0",
"baseScore": 8.6,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 4,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "psirt@cisco.com",
"affectedData": [
{
"vendor": "Cisco",
"product": "Cisco NX-OS Software for Nexus 6000 Series",
"versions": [
{
"status": "affected",
"version": "6.0(2)N1(2)"
}
]
}
]
}
],
"published": "2018-10-17T21:49:52.787",
"references": [
{
"url": "http://www.securityfocus.com/bid/105669",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "psirt@cisco.com"
},
{
"url": "http://www.securitytracker.com/id/1041920",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "psirt@cisco.com"
},
{
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nexus-ptp-dos",
"tags": [
"Vendor Advisory"
],
"source": "psirt@cisco.com"
},
{
"url": "http://www.securityfocus.com/bid/105669",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://www.securitytracker.com/id/1041920",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nexus-ptp-dos",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-20"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-20"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the Precision Time Protocol (PTP) feature of Cisco Nexus 5500, 5600, and 6000 Series Switches running Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a lack of protection against PTP frame flood attacks. An attacker could exploit this vulnerability by sending large streams of malicious IPv4 or IPv6 PTP traffic to the affected device. A successful exploit could allow the attacker to cause a DoS condition, impacting the traffic passing through the device."
},
{
"lang": "es",
"value": "Una vulnerabilidad en la característica Precision Time Protocol (PTP) de Cisco Nexus 5500, 5600 y 6000 Series Switches que ejecutan Cisco NX-OS Software podría permitir que un atacante remoto no autenticado cree una condición de denegación de servicio (DoS) en un dispositivo afectado. La vulnerabilidad se debe a la falta de protección contra ataques de inundación de tramas PTP. Un atacante podría explotar esta vulnerabilidad enviando grandes flujos de tráfico PTP IPv4 o IPv6 malicioso al dispositivo afectado. Su explotación con éxito podría permitir que un atacante provoque una denegación de servicio (DoS), lo que impacta en el tráfico que pasa a través del dispositivo."
}
],
"lastModified": "2026-06-17T01:30:37.740",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:nx-os:7.3\\(2\\)n1\\(0.8\\):*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E550EE1A-F746-48A9-B767-60761CDED37A"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:cisco:nexus_5548p:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "E5519EA9-1236-4F51-9974-E3FC1B26B5D2"
},
{
"criteria": "cpe:2.3:h:cisco:nexus_5548up:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "CB0A3B06-8B25-4CD3-AFA9-5F928B1042F4"
},
{
"criteria": "cpe:2.3:h:cisco:nexus_5596t:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "1766443C-1C5A-486E-A36F-D3045F364D78"
},
{
"criteria": "cpe:2.3:h:cisco:nexus_5596up:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "DC4D4403-F93B-4CC8-B75F-7A5B03FEDD85"
},
{
"criteria": "cpe:2.3:h:cisco:nexus_56128p:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "ABB6E612-4246-4408-B3F6-B31E771F5ACB"
},
{
"criteria": "cpe:2.3:h:cisco:nexus_5624q:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "91B129B2-2B31-4DE0-9F83-CC6E0C8729A0"
},
{
"criteria": "cpe:2.3:h:cisco:nexus_5648q:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "3CBD3CD0-B542-4B23-9C9D-061643BE44E8"
},
{
"criteria": "cpe:2.3:h:cisco:nexus_5672up:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "A22A2647-A4C0-4681-BBC5-D95ADBAA0457"
},
{
"criteria": "cpe:2.3:h:cisco:nexus_5672up-16g:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "367C2A49-4C4D-471B-9B34-AFAFA5AE9503"
},
{
"criteria": "cpe:2.3:h:cisco:nexus_5696q:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "B2BB1A3A-668C-4B0D-8AC2-6B4758B3420B"
},
{
"criteria": "cpe:2.3:h:cisco:nexus_6001:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "A9662D6B-AF0F-45C8-B7CD-AE7C76593FDB"
},
{
"criteria": "cpe:2.3:h:cisco:nexus_6004:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "4F557E38-09F6-42C6-BABA-3C3168B38BBA"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "psirt@cisco.com"
}