Vulnerability Description
A vulnerability in the Cisco Discovery Protocol (formerly known as CDP) subsystem of devices running, or based on, Cisco NX-OS Software contain a vulnerability that could allow an unauthenticated, adjacent attacker to create a denial of service (DoS) condition. The vulnerability is due to a failure to properly validate certain fields within a Cisco Discovery Protocol message prior to processing it. An attacker with the ability to submit a Cisco Discovery Protocol message designed to trigger the issue could cause a DoS condition on an affected device while the device restarts. This vulnerability affects Firepower 4100 Series Next-Generation Firewall, Firepower 9300 Security Appliance, MDS 9000 Series Multilayer Director Switches, Nexus 1000V Series Switches, Nexus 1100 Series Cloud Services Platforms, Nexus 2000 Series Switches, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 3600 Platform Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Switches in NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules, UCS 6100 Series Fabric Interconnects, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCvc89242, CSCve40943, CSCve40953, CSCve40965, CSCve40970, CSCve40978, CSCve40992, CSCve41000, CSCve41007.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Nx-Os | >= 7.1, < 7.1\(5\)n1\(1\) |
| Cisco | Nexus 5000 | - |
| Cisco | Nexus 5010 | - |
| Cisco | Nexus 5020 | - |
| 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 5696Q | - |
| Cisco | Nexus 7000 | - |
| Cisco | Nexus 7700 | - |
| Cisco | Nexus 92160Yc-X | - |
| Cisco | Nexus 92304Qc | - |
| Cisco | Nexus 9236C | - |
| Cisco | Nexus 9272Q | - |
| Cisco | Nexus 93108Tc-Ex | - |
Related Weaknesses (CWE)
References
- http://www.securitytracker.com/id/1041169Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- http://www.securitytracker.com/id/1041169Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
FAQ
What is CVE-2018-0331?
CVE-2018-0331 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A vulnerability in the Cisco Discovery Protocol (formerly known as CDP) subsystem of devices running, or based on, Cisco NX-OS Software contain a vulnerability that could allow an unauthenticated, adj...
How severe is CVE-2018-0331?
CVE-2018-0331 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-0331?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Nx-Os, Cisco Nexus 5000, Cisco Nexus 5010, Cisco Nexus 5020, Cisco Nexus 5548P.