Cisco Adaptive Security Appliance with FirePOWER Services Kernel Logging Denial of Service Vulnerability

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Updated:May 4, 2016
Document ID:1462379023234541

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Cisco Security Advisory

Cisco Adaptive Security Appliance with FirePOWER Services Kernel Logging Denial of Service Vulnerability

High
Advisory ID:
cisco-sa-20160504-fpkern
First Published:
2016 May 4 16:00 GMT
Version 1.0:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCux19922
CVE-2016-1369
CWE-399
CVSS Score:
Base 7.8, Temporal 6.4Click Icon to Copy Verbose Score
AV:N/AC:L/Au:N/C:N/I:N/A:C/E:F/RL:OF/RC:C
CVE-2016-1369
CWE-399

Summary

  • A vulnerability in the kernel logging configuration for Firepower System Software for the Adaptive Security Appliance (ASA) 5585-X FirePOWER Security Services Processor (SSP) module could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to high consumption of system resources. 

    The vulnerability is due to the logging of certain IP packets. An attacker could exploit this vulnerability by sending a flood of specially crafted IP packets to the affected device. An exploit could allow the attacker to cause the Cisco FirePOWER module to cease inspecting traffic or go offline.

    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:

    http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160504-fpkern

Affected Products

  • Vulnerable Products

    All versions of Firepower System Software for the ASA 5585-X FirePOWER SSP modules are affected by this vulnerability. The vulnerability does not depend on the software configuration.

    Determining the ASA 5585-X FirePOWER SSP Software Version

    To determine the running version, issue the show version command from the command-line interface, which an administrator can access via the serial console, an SSH session to the management interface, or a session opened from the parent ASA 5585-X FirePOWER SSP module using the session command. 

    The following example shows Firepower System Software version 5.4.0:
    > show version
    
---------[ asasfr ]----------
    
Model                     : ASA5585 (72) Version 5.4.0 (Build 763)
    
UUID                      : 1401763c-a7a5-11e4-9cfd-92a5551c2e4f
    
VDB version               : 225
    
----------------------------------------------------
    Customers using FireSIGHT Management Center to manage the ASA 5585-X FirePOWER SSP module can locate the version of ASA 5500-X Series software with FirePOWER Services module by navigating to Devices > Device Management and double-clicking the device name.

    Products Confirmed Not Vulnerable

    Cisco has confirmed that this vulnerability does not affect the following Cisco products:
    • Adaptive Security Appliance (ASA) Software
    • ASA 5500-X Series with FirePOWER Services
    • Firepower Management Center
    • FirePOWER Threat Defense (FTD)
    • FirePOWER Threat Defense for Integrated Services Routers (ISRs)
    • Firepower 4100 Series Security Appliances
    • FirePOWER 7000 Series Appliances
    • FirePOWER 8000 Series Appliances
    • Advanced Malware Protection (AMP) for Networks, 7000 Series Appliances
    • Advanced Malware Protection (AMP) for Networks, 8000 Series Appliances
    • Firepower 9300 Series Security Appliances
    • Intrusion Prevention System (IPS) Software
    • Snort IPS for Integrated Services Routers (ISRs)
    • Next Generation Intrusion Prevention System (NGIPS) for Blue Coat X-Series
    • Sourcefire 3D System Appliances
    • Virtual Next-Generation Intrusion Prevention System (NGIPSv) for VMware
    No other Cisco products are currently known to be affected by this vulnerability.

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 consult the Cisco Security Advisories and Responses archive at http://www.cisco.com/go/psirt and review subsequent advisories 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 Technical Assistance Center (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

    This vulnerability has been addressed in the following releases of Firepower System Software:
    Product Major Release  First Fixed Release for This Advisory 
    5.3.1 5.3.1.7
    5.4.0 5.4.0.7
    5.4.1 5.4.1.6
    6.0 6.0.1

    Customers should install the appropriate fixed release by using the software update features of Cisco Firepower Management Center.

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 found during the resolution of a support case.

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.

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Revision History

  • Version Description Section Status Date
    1.0 Initial public release. — Final 2016-May-04
    Show Less

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.

Subscribe to Cisco Security Notifications