Cisco IOS Access Points Software 802.11r Fast Transition Denial of Service 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:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.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 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.
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:
https://www.cisco.com/c/en/us/support/web/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
Cisco has released fixed software that addresses this vulnerability.
To help ensure a complete upgrade solution, consider that this advisory is part of a collection that includes the following advisories:
Customers should upgrade to an appropriate release as indicated in the table in this section. In the following table, the first column lists major releases of Cisco Wireless LAN Controller Software, the second column lists the first fixed release of Cisco Wireless LAN Controller Software for the vulnerability described in this advisory, and the third column lists the corresponding Cisco AP IOS Software first fixed release for the vulnerability described in this advisory.
| Cisco WLC Major Software Release | Cisco WLC First Fixed Release for This Vulnerability | Cisco AP IOS First Fixed Release for This Vulnerability |
|---|---|---|
| Prior to 8.0 | Vulnerable, migrate to 8.3.140.0 or later | Vulnerable, migrate to 15.3(3)JD13 or later |
| 8.1 | Vulnerable, migrate to 8.3.140.0 or later | Vulnerable, migrate to 15.3(3)JD13 or later |
| 8.2 | Vulnerable, migrate to 8.3.140.0 or later | Vulnerable, migrate to 15.3(3)JD13 or later |
| 8.3 | Vulnerable, migrate to 8.3.140.0 or later | Vulnerable, migrate to 15.3(3)JD13 or later |
| 8.4 | Vulnerable, migrate to 8.5.110.0 or later | Vulnerable, migrate to 15.3(3)JF4 or later |
| 8.5 | Vulnerable, migrate to 8.5.110.0 or later | Vulnerable, migrate to 15.3(3)JF4 or later |
| 8.6 | Not vulnerable | Not vulnerable |
| 8.7 | Not vulnerable | Not vulnerable |
| 8.8 | Not vulnerable | Not vulnerable |
from Cisco Security Advisory https://ift.tt/2ykxCAQ