CVE-2018-0378 : A vulnerability in the Precision Time Protocol (PTP) feature of Cisco Nexus 5500, 5600, and 6000 Series Switches running

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.

Published 2018-10-17 21:49:53

Updated 2019-10-09 23:31:55

Source Cisco Systems, Inc.

View at NVD, CVE.org

Vulnerability category: Input validationDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2018-0378

EPSS FAQ

0.20%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 58 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-0378

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.8	HIGH	AV:N/AC:L/Au:N/C:N/I:N/A:C	10.0	6.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
8.6	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	3.9	4.0	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: None Availability: High
8.6	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	3.9	4.0	Cisco Systems, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2018-0378

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Assigned by:

nvd@nist.gov (Primary)
ykramarz@cisco.com (Secondary)

References for CVE-2018-0378

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nexus-ptp-dos

Cisco NX-OS Software for Nexus 5500, 5600, and 6000 Series Switches Precision Time Protocol Denial of Service Vulnerability
Vendor Advisory
http://www.securitytracker.com/id/1041920

Cisco NX-OS PTP Frame Flooding Lets Remote Users Cause the Target Device to Reload - SecurityTracker
Third Party Advisory;VDB Entry
http://www.securityfocus.com/bid/105669

Cisco NX-OS Software Precision Time Protocol CVE-2018-0378 Remote Denial of Service Vulnerability
Third Party Advisory;VDB Entry

Products affected by CVE-2018-0378

Cisco » Nx-os » Version: 7.3(2)n1(0.8)
cpe:2.3:o:cisco:nx-os:7.3\(2\)n1\(0.8\):*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Nexus 5548p » Version: N/A
When used together with: Cisco » Nexus 5548up » Version: N/A
When used together with: Cisco » Nexus 5596t » Version: N/A
When used together with: Cisco » Nexus 5596up » Version: N/A
When used together with: Cisco » Nexus 56128p » Version: N/A
When used together with: Cisco » Nexus 5624q » Version: N/A
When used together with: Cisco » Nexus 5648q » Version: N/A
When used together with: Cisco » Nexus 5672up » Version: N/A
When used together with: Cisco » Nexus 5672up-16g » Version: N/A
When used together with: Cisco » Nexus 5696q » Version: N/A
When used together with: Cisco » Nexus 6001 » Version: N/A
When used together with: Cisco » Nexus 6004 » Version: N/A

Vulnerability Details : CVE-2018-0378

Exploit prediction scoring system (EPSS) score for CVE-2018-0378

CVSS scores for CVE-2018-0378

CWE ids for CVE-2018-0378

References for CVE-2018-0378

Products affected by CVE-2018-0378