CVE-2018-0378: Cisco NX-OS Software for Nexus 5500, 5600, and 6000 Series Switches Precision Time Protocol Denial of Service Vulnerability
First published: Wed Oct 17 2018(Updated: )
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.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Nx-os | =7.3\(2\)n1\(0.8\) | |
| Cisco Nexus 5548p | ||
| Cisco Nexus 5548up | ||
| Cisco Nexus 5596t | ||
| Cisco Nexus 5596up | ||
| Cisco Nexus 56128p | ||
| Cisco Nexus 5624q | ||
| Cisco Nexus 5648q | ||
| Cisco Nexus 5672up | ||
| Cisco Nexus 5672up-16g | ||
| Cisco Nexus 5696q | ||
| Cisco Nexus 6001 | ||
| Cisco Nexus 6004 |
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Reference Links
Frequently Asked Questions
What is CVE-2018-0378?
CVE-2018-0378 is a vulnerability in the Precision Time Protocol (PTP) feature of Cisco Nexus 5500, 5600, and 6000 Series Switches running Cisco NX-OS Software that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
How does CVE-2018-0378 affect Cisco Nexus switches?
CVE-2018-0378 affects Cisco Nexus 5500, 5600, and 6000 Series Switches running Cisco NX-OS Software.
What is the severity of CVE-2018-0378?
CVE-2018-0378 has a severity rating of 8.6 (high).
How can an attacker exploit CVE-2018-0378?
An attacker can exploit CVE-2018-0378 by sending specially crafted Precision Time Protocol (PTP) packets to the affected device.
Is there a fix available for CVE-2018-0378?
Yes, Cisco has released a security advisory with mitigation steps for CVE-2018-0378.
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- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/author
- agent/last-modified-date
- agent/references
- agent/weakness
- agent/title
- agent/first-publish-date
- agent/description
- agent/event
- agent/tags
- vendor/cisco
- canonical/cisco nx-os
- version/cisco nx-os/7.3\(2\)n1\(0.8\)
- canonical/cisco nexus 5548p
- canonical/cisco nexus 5548up
- canonical/cisco nexus 5596t
- canonical/cisco nexus 5596up
- canonical/cisco nexus 56128p
- canonical/cisco nexus 5624q
- canonical/cisco nexus 5648q
- canonical/cisco nexus 5672up
- canonical/cisco nexus 5672up-16g
- canonical/cisco nexus 5696q
- canonical/cisco nexus 6001
- canonical/cisco nexus 6004