Cisco Aironet 1800, 2800, and 3800 Series Access Point Platforms 802.11 Protocol Denial of Service Vulnerability

Summary

• A vulnerability in the 802.11 wireless LAN protocol for Cisco Access Point (AP) platforms could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition when the device unexpectedly reloads.
  
  The vulnerability is due to rate limiting of 802.11 traffic. An attacker could exploit this vulnerability by sending crafted 802.11 traffic to the targeted adjacent 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-aap2

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-aap2

Revision History

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

  Show Less