CVE-2018-0378

Cisco NX-OS Software for Nexus 5500, 5600, and 6000 Series Switches Precision Time Protocol Denial of Service Vulnerability

Severity Score

8.6

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

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.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-11-27 CVE Reserved
2018-10-17 CVE Published
2024-08-01 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/105669	Third Party Advisory
http://www.securitytracker.com/id/1041920	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nexus-ptp-dos	2019-10-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	7.3\(2\)n1\(0.8\) Search vendor "Cisco" for product "Nx-os" and version "7.3\(2\)n1\(0.8\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5548p Search vendor "Cisco" for product "Nexus 5548p"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	7.3\(2\)n1\(0.8\) Search vendor "Cisco" for product "Nx-os" and version "7.3\(2\)n1\(0.8\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5548up Search vendor "Cisco" for product "Nexus 5548up"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	7.3\(2\)n1\(0.8\) Search vendor "Cisco" for product "Nx-os" and version "7.3\(2\)n1\(0.8\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5596t Search vendor "Cisco" for product "Nexus 5596t"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	7.3\(2\)n1\(0.8\) Search vendor "Cisco" for product "Nx-os" and version "7.3\(2\)n1\(0.8\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5596up Search vendor "Cisco" for product "Nexus 5596up"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	7.3\(2\)n1\(0.8\) Search vendor "Cisco" for product "Nx-os" and version "7.3\(2\)n1\(0.8\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 56128p Search vendor "Cisco" for product "Nexus 56128p"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	7.3\(2\)n1\(0.8\) Search vendor "Cisco" for product "Nx-os" and version "7.3\(2\)n1\(0.8\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5624q Search vendor "Cisco" for product "Nexus 5624q"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	7.3\(2\)n1\(0.8\) Search vendor "Cisco" for product "Nx-os" and version "7.3\(2\)n1\(0.8\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5648q Search vendor "Cisco" for product "Nexus 5648q"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	7.3\(2\)n1\(0.8\) Search vendor "Cisco" for product "Nx-os" and version "7.3\(2\)n1\(0.8\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5672up Search vendor "Cisco" for product "Nexus 5672up"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	7.3\(2\)n1\(0.8\) Search vendor "Cisco" for product "Nx-os" and version "7.3\(2\)n1\(0.8\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5672up-16g Search vendor "Cisco" for product "Nexus 5672up-16g"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	7.3\(2\)n1\(0.8\) Search vendor "Cisco" for product "Nx-os" and version "7.3\(2\)n1\(0.8\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5696q Search vendor "Cisco" for product "Nexus 5696q"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	7.3\(2\)n1\(0.8\) Search vendor "Cisco" for product "Nx-os" and version "7.3\(2\)n1\(0.8\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 6001 Search vendor "Cisco" for product "Nexus 6001"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	7.3\(2\)n1\(0.8\) Search vendor "Cisco" for product "Nx-os" and version "7.3\(2\)n1\(0.8\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 6004 Search vendor "Cisco" for product "Nexus 6004"	-	-	Safe