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             AUSCERT External Security Bulletin Redistribution

  Cisco Firepower 4100 Series NGFW and Firepower 9300 Security Appliance
              Smart Licensing Command Injection Vulnerability
                              2 November 2017


        AusCERT Security Bulletin Summary

Product:           Cisco Firepower 4100 Series Next-Generation Firewall (NGFW)
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Root Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-12277  

Original Bulletin: 

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Cisco Firepower 4100 Series NGFW and Firepower 9300 Security Appliance Smart 
Licensing Command Injection Vulnerability


Advisory ID:

First Published:
2017 November 1 16:00 GMT 

Version 1.0:

No workarounds available

Cisco Bug IDs:

CVSS Score: Base 8.8


A vulnerability in the Smart Licensing Manager service of the Cisco Firepower
4100 Series Next-Generation Firewall (NGFW) and Firepower 9300 Security 
Appliance could allow an authenticated, remote attacker to inject arbitrary 
commands that could be executed with root privileges.

The vulnerability is due to insufficient input validation of certain Smart 
Licensing configuration parameters. An authenticated attacker could exploit 
the vulnerability by configuring a malicious URL within the affected feature.
A successful exploit could allow the attacker to execute arbitrary commands 
with root privileges.

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: 

Affected Products

Vulnerable Products

This vulnerability affects the following Cisco Firepower Security products 
running FX-OS code trains 1.1.3, 1.1.4, and 2.0.1. Versions 2.1.1, 2.2.1, and
2.2.2 are not affected.

 Firepower 4100 Series Next-Generation Firewall

 Firepower 9300 Security Appliance

To determine which version of the software is currently running on a device 
(Package-Vers), administrators may use the following commands in the device 
CLI or by navigating to the Overview tab in the Admin portal. The following 
example shows the output of the CLI command show version on a device running 
FX-OS 2.2(2.14):

QP4120B1 # scope system

QP4120B1 /system # show version


Running-Vers: 4.2(2.15)

Package-Vers: 2.2(2.14)

Activate-Status: Ready

Products Confirmed Not Vulnerable

No other Cisco products are currently known to be affected by this 

The following products are not affected by this vulnerability:

 ASA 5500-X with FirePOWER Services
 Firepower 2100 Series NGFW
 Firepower NGFW Virtual (NGFWv)


There are no workarounds that address this vulnerability.

Fixed Software

Cisco has released free software updates that address the vulnerability 
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 software license: 

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 

In all cases, customers should ensure that the devices to upgrade 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.

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: 

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 upgrade.

Fixed Releases

The following FX-OS releases for the Cisco Firepower Security Appliances 
address this vulnerability. Customers should upgrade to an appropriate release
as indicated in the following table:

Firepower 4100 and 9300 Series Security Appliances FX-OS Code Trains    First Fixed Release for This Vulnerability

1.1.3 and prior releases                                                Affected; migrate to 2.0.1 or greater
2.1.1                                                                   Not affected
2.2.1                                                                   Not affected
2.2.2                                                                   Not affected

Note: FX-OS code train versions 1.x have entered the end-of-life phase. Refer
to the End-of-Sale and End-of-Life Announcement for the Cisco Firepower 
eXtensible Operating System Releases 1.x for additional information.

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 reported to Cisco by an internal testing team.



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