Summary

• 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:
  https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-fpwr

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
  
  FPRM:
  
  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 vulnerability.
  
  The following products are not affected by this vulnerability:
  

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

Workarounds

• 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:
  http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html

  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 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:
  http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html

  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
  1.1.4	1.1.4.175
  2.0.1	2.0.1.135
  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.

Source

• This vulnerability was reported to Cisco by an internal testing team.

URL

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-fpwr

Revision History

• Version	Description	Section	Status	Date
  1.0	Initial public release.	—	Final	2017-November-01

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