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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
CVE Names: CVE-2017-12277
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Cisco Firepower 4100 Series NGFW and Firepower 9300 Security Appliance Smart
Licensing Command Injection Vulnerability
2017 November 1 16:00 GMT
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:
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
QP4120B1 # scope system
QP4120B1 /system # show version
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.
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.
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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