Vulnerability Description
A vulnerability in the Cisco Discovery Protocol component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code as root or cause a denial of service (DoS) condition on the affected device. The vulnerability exists because of insufficiently validated Cisco Discovery Protocol packet headers. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to a Layer 2 adjacent affected device. A successful exploit could allow the attacker to cause a buffer overflow that could allow the attacker to execute arbitrary code as root or cause a DoS condition on the affected device. This vulnerability affects the following if configured to use Cisco Discovery Protocol: Firepower 4100 Series Next-Generation Firewalls, Firepower 9300 Security Appliance, MDS 9000 Series Multilayer Switches, Nexus 1000V Series Switches, Nexus 1100 Series Cloud Services Platforms, Nexus 2000 Series Fabric Extenders, Nexus 3000 Series Switches, Nexus 3500 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 Fabric Switches in Application Centric Infrastructure (ACI) mode, Nexus 9000 Series Switches in standalone 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: CSCvc22202, CSCvc22205, CSCvc22208, CSCvc88078, CSCvc88150, CSCvc88159, CSCvc88162, CSCvc88167.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Nx-Os | 7.0\(0\)hsk\(0.357\) |
| 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-2018-0303?
CVE-2018-0303 is a vulnerability with a CVSS score of 8.8 (HIGH). A vulnerability in the Cisco Discovery Protocol component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code as root or cause a...
How severe is CVE-2018-0303?
CVE-2018-0303 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-0303?
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.