CVE-2018-0330: A vulnerability in the NX-API management application programming interface (API) in devices running, or based on, Cisco NX-OS Software could allow an ...

Description

A vulnerability in the NX-API management application programming interface (API) in devices running, or based on, Cisco NX-OS Software could allow an authenticated, remote attacker to execute commands with elevated privileges. The vulnerability is due to a failure to properly validate certain parameters included within an NX-API request. An attacker that can successfully authenticate to the NX-API could submit a request designed to bypass NX-OS role assignment. A successful exploit could allow the attacker to execute commands with elevated privileges. This vulnerability affects the following if configured to use the NX-API feature: MDS 9000 Series Multilayer Switches, Nexus 2000 Series Switches, 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 Switches in standalone NX-OS mode. Cisco Bug IDs: CSCvc73177, CSCve40903, CSCve40911.

Metrics

EPSS Probability

2.79%

84.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Nx-Os	>= 7.3, < 7.3\(3\)n1\(1\)
Cisco	Nx-Os	6.0
Cisco	Nx-Os	7.0
Cisco	Nx-Os	7.1
Cisco	Nx-Os	7.2
Cisco	Nx-Os	>= 7.3, < 7.3.2d1
Cisco	Nx-Os	>= 8.1, < 8.1.2
Cisco	Nx-Os	6.2
Cisco	Nx-Os	8.0
Cisco	Nx-Os	8.2
Cisco	Nx-Os	< 7.0\(3\)i3
Cisco	Nx-Os	>= 7.0\(3\)i4, < 7.0\(3\)i7\(1\)
Cisco	Nx-Os	>= 6.0, < 7.3\(3\)n1\(1\)
Cisco	Nx-Os	>= 8.1, < 8.1\(1a\)
Cisco	Nx-Os	5.2

References

http://www.securitytracker.com/id/1041169Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-nxos-nxapiVendor Advisory
http://www.securitytracker.com/id/1041169Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-nxos-nxapiVendor Advisory

Timeline

Published: Jun 20, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-0330?

A vulnerability in the NX-API management application programming interface (API) in devices running, or based on, Cisco NX-OS Software could allow an authenticated, remote attacker to execute commands with elevated privileges. The vulnerability is due to a failure to properly validate certain parameters included within an NX-API request. An attacker that can successfully authenticate to the NX-API could submit a request designed to bypass NX-OS role assignment. A successful exploit could allow the attacker to execute commands with elevated privileges. This vulnerability affects the following if configured to use the NX-API feature: MDS 9000 Series Multilayer Switches, Nexus 2000 Series Switches, 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 Switches in standalone NX-OS mode. Cisco Bug IDs: CSCvc73177, CSCve40903, CSCve40911.

How severe is CVE-2018-0330?

Severity scoring for CVE-2018-0330 is pending analysis. The EPSS model estimates a 2.79% probability of exploitation in the next 30 days.

How do I fix CVE-2018-0330?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.