cisco-sa-20190515-nxos-cli-bypass: Cisco NX-OS Software CLI Bypass to Internal Service Vulnerability
First published: Thu May 16 2019(Updated: )
A vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated, local attacker to access internal services that should be restricted on an affected device, such as the NX-API. The vulnerability is due to insufficient validation of arguments passed to a certain CLI command. An attacker could exploit this vulnerability by including malicious input as the argument to the affected command. A successful exploit could allow the attacker to bypass intended restrictions and access internal services of the device. An attacker would need valid device credentials to exploit this vulnerability. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-cli-bypass
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco NX-OS Software | =6.2<6.2(25)=5.2<6.2(25) | 6.2(25) 6.2(25) |
| Cisco NX-OS Software | ||
| Cisco NX-OS Software | =6.0(2)A8<6.0(2)A8(11)=Prior to 6.0(2)A8<6.0(2)A8(11) | 6.0(2)A8(11) 6.0(2)A8(11) |
| Cisco NX-OS Software | =6.2<6.2(22)=Prior to 6.2<6.2(22) | 6.2(22) 6.2(22) |
| Cisco NX-OS Software | =4.0<4.0(1d)=Prior to 4.0<4.0(1d) | 4.0(1d) 4.0(1d) |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this Cisco NX-OS Software CLI Bypass vulnerability?
The vulnerability ID of this Cisco NX-OS Software CLI Bypass vulnerability is cisco-sa-20190515-nxos-cli-bypass.
What is the severity level of the Cisco NX-OS Software CLI Bypass vulnerability?
The severity level of the Cisco NX-OS Software CLI Bypass vulnerability is medium.
How can an attacker exploit the Cisco NX-OS Software CLI Bypass vulnerability?
An attacker can exploit the Cisco NX-OS Software CLI Bypass vulnerability by using a certain CLI command to bypass restrictions and access internal services on the affected device.
What versions of Cisco NX-OS Software are affected by the CLI Bypass vulnerability?
The versions of Cisco NX-OS Software affected by the CLI Bypass vulnerability are 6.2(25), 5.2, 6.0(2)A8(11), 6.2(22), and 4.0(1d).
How can I fix the Cisco NX-OS Software CLI Bypass vulnerability?
To fix the Cisco NX-OS Software CLI Bypass vulnerability, update to a fixed software version as mentioned in the Cisco Security Advisory cisco-sa-20190515-nxos-cli-bypass.
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- vendor/cisco
- canonical/cisco nx-os software
- version/cisco nx-os software/6.2
- version/cisco nx-os software/5.2
- version/cisco nx-os software/6.0(2)a8
- version/cisco nx-os software/prior to 6.0(2)a8
- version/cisco nx-os software/prior to 6.2
- version/cisco nx-os software/4.0
- version/cisco nx-os software/prior to 4.0