Cisco Aironet 1800, 2800, and 3800 Series Access Point Platforms AMPDU Denial of Service Vulnerability

Summary

• A vulnerability in the Aggregated MAC Protocol Data Unit (AMPDU) implementation in Cisco Access Point (AP) platforms could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition.
  
  The vulnerability is due to incomplete input validation of the AMPDU packet header. An attacker could exploit this vulnerability by sending a crafted AMPDU packet to the targeted device. An exploit could allow the attacker to cause the device to reload unexpectedly.
  
  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-20160817-aap

Affected Products

• The following Cisco Aironet AP platforms are affected:
  

  • Cisco Aironet 1800 Series Access Point
  • Cisco Aironet 2800 Series Access Point
  • Cisco Aironet 3800 Series Access Point

  Vulnerable Products

  Cisco Aironet 1800, 2800, and 3800 AP platforms running software versions prior to the first fixed version of 8.2.121.0 or 8.3.102.0 are vulnerable.

  Products Confirmed Not Vulnerable

  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 provides information about fixed software in Cisco bugs, which are accessible through the Cisco Bug Search Tool.
  
  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 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 providers.

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.

URL

• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160817-aap

Revision History

• Version	Description	Section	Status	Date
  1.0	Initial public release.	-	Final	2016-August-17

  Show Less