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AUSCERT External Security Bulletin Redistribution
30 November 2017
AusCERT Security Bulletin Summary
Product: Cisco Firepower Extensible Operating System (FXOS)
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
CVE Names: CVE-2017-12329
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First Published: 2017 November 29 16:00 GMT
No workarounds available
Cisco Bug IDs:
CVSS Score: Base 6.3
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
This advisory is available at the following link:
This vulnerability affects the following products running Cisco FXOS or NX-OS
System Software: Firepower 4100 Series Next-Generation Firewall Firepower 9300
Security Appliance Multilayer Director Switches Nexus 1000V Series Switches
Nexus 2000 Series Fabric Extenders Nexus 3000 Series Switches Nexus 3500
Platform Switches Nexus 5000 Series 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 Nexus 9500 R-Series Line Cards and Fabric Modules Unified Computing
System Manager For information about affected releases, consult the Cisco bug
ID(s) at the top of this advisory.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability. Cisco has confirmed that this vulnerability does not affect the
following products: Firepower 2100 Series Nexus 9000 Series Fabric Switches in
Application Centric Infrastructure (ACI) mode
There are no workarounds that address this vulnerability. Fixed Software
For information about fixed software releases, consult the Cisco bug ID(s) at
the top of this advisory. When considering software upgrades, customers are
advised to regularly consult the advisories for Cisco products, which are
available from the Cisco Security Advisories and Alerts page, to determine
exposure and a complete upgrade solution. In all cases, customers should
ensure that the devices to be upgraded contain sufficient memory and confirm
that current hardware and software configurations will continue to be
supported properly by the new release. If the information is not clear,
customers are advised to contact the Cisco Technical Assistance Center (TAC)
or their contracted maintenance providers.
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any
public announcements or malicious use of the vulnerability that is described
in this advisory.
This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy. This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Revision History Version Description Section Status Date 1.0 Initial public
release. Final 2017-November-29
THIS DOCUMENT IS PROVIDED ON AN AS IS BASIS AND DOES NOT IMPLY ANY KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS
LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO
CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of
the text of this document that omits the distribution URL is an uncontrolled
copy and may lack important information or contain factual errors. The
information in this document is intended for end users of Cisco products.
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