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AUSCERT External Security Bulletin Redistribution
Cisco FXOS Software and Firepower Threat Defense Software
Command Injection Vulnerabilities
3 October 2019
AusCERT Security Bulletin Summary
Product: Cisco FXOS Software and Firepower Threat Defense Software
Publisher: Cisco Systems
Operating System: Network Appliance
Impact/Access: Root Compromise -- Existing Account
CVE Names: CVE-2019-12699
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Cisco FXOS Software and Firepower Threat Defense Software Command Injection
Advisory ID: cisco-sa-20191002-fxos-cmd-inject
First Published: 2019 October 2 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
o Multiple vulnerabilities in the CLI of Cisco FXOS Software and Cisco
Firepower Threat Defense (FTD) Software could allow an authenticated, local
attacker to execute commands on the underlying operating system (OS) with
These vulnerabilities are due to insufficient input validation. An attacker
could exploit these vulnerabilities by including crafted arguments to
specific CLI commands. A successful exploit could allow the attacker to
execute commands on the underlying OS with root privileges.
Cisco has released software updates that address these vulnerabilities.
There are no workarounds that address these vulnerabilities.
This advisory is available at the following link:
o Vulnerable Products
These vulnerabilities affect Cisco FXOS Software and Cisco FTD Software
releases when running on the following platforms:
Cisco Firepower 1000 Series Appliances
Cisco Firepower 2100 Series Appliances
Cisco Firepower 4100 Series Appliances
Cisco Firepower 9300 Series Appliances
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by these vulnerabilities.
o There are no workarounds that address these vulnerabilities.
o Cisco has released free software updates that address the vulnerabilities
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
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
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
Cisco FTD Software for Cisco Firepower 1000/2100 Series Appliances
Cisco FTD Software Release First Fixed Release for These Vulnerabilities
Earlier than 6.1.0 Migrate to a fixed release.
6.1.0 Migrate to a fixed release.
6.2.0 Migrate to a fixed release.
6.2.1 Migrate to a fixed release.
6.2.2 Migrate to a fixed release.
6.4.0 Not vulnerable.
6.5.0 Not vulnerable.
1. Cisco FMC and FTD Software releases 6.0.1 and earlier have reached end
of software maintenance. Customers are advised to migrate to a supported
release that includes the fix for this vulnerability.
To upgrade to a fixed release of Cisco FTD Software, customers can do one
of the following:
For devices that are managed by using Cisco Firepower Management Center
(FMC), use the FMC interface to install the upgrade. After installation
is complete, reapply the access control policy.
For devices that are managed by using Cisco Firepower Device Manager
(FDM), use the FDM interface to install the upgrade. After installation
is complete, reapply the access control policy.
Cisco FXOS Software for Cisco Firepower 4100/9300 Series Appliances
Cisco FXOS Software Release First Fixed Release for These Vulnerabilities
2.0 Migrate to a fixed release.
2.6 Not vulnerable.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerabilities that are
described in this advisory.
o These vulnerabilities were found during internal security testing.
Cisco Security Vulnerability Policy
o 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.
| Version | Description | Section | Status | Date |
| 1.0 | Initial public release. | - | Final | 2019-October-02 |
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