A vulnerability in the CLI of Cisco Firepower Extensible Operating System (FXOS) and NX-OS System Software could allow an authenticated, local attacker to perform a command injection attack.

The vulnerability is due to insufficient input validation of command arguments to the CLI parser.

An attacker could exploit this vulnerability by injecting crafted command arguments into a vulnerable CLI command.

An exploit could allow the attacker to execute arbitrary commands at the user’s privilege level. On products that support multiple virtual device contexts (VDCs), this vulnerability could allow the attacker to execute commands at the user’s privilege level outside the user’s environment.

There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-fxnx

Security Impact Rating: Medium

CVE: CVE-2017-12329

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