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://ift.tt/1i7L7W6
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:
http://ift.tt/SmQe4o
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
Customers should upgrade to an appropriate release as indicated in the table in this section. To help ensure a complete upgrade solution, consider that this advisory is part of a collection that includes the following advisories:
- cisco-sa-20171101-aironet1: Cisco Aironet 1560, 2800, and 3800 Series Access Point Platforms 802.11 Denial of Service Vulnerability
- cisco-sa-20171101-aironet2: Cisco Aironet 1560, 2800, and 3800 Series Access Point Platforms Extensible Authentication Protocol Denial of Service Vulnerability
- cisco-sa-20171101-wlc1: Cisco Wireless LAN Controller Simple Network Management Protocol Memory Leak Denial of Service Vulnerability
- cisco-sa-20171101-wlc2: Cisco Wireless LAN Controller 802.11v Basic Service Set Transition Management Denial of Service Vulnerability
In the following table, the left column lists releases of Cisco software. The center column indicates the first recommended release that includes the fix for this vulnerability. The right column indicates the first recommended release that includes fixes for all the vulnerabilities described in this collection of advisories.
| Cisco Wireless LAN Controller Software Release | Recommended Fixed Release for This Vulnerability | Recommended Fixed Release for All the Vulnerabilities Described in the Collection of Advisories |
|---|---|---|
| Prior to 8.0 | 8.0.152.0 | 8.0.152.0 |
| 8.0 | 8.0.152.0 | 8.0.152.0 |
| 8.1 | 8.2.164.0 | 8.2.164.0 |
| 8.2 | 8.2.164.0 | 8.2.164.0 |
| 8.3 | 8.3.132.0 | 8.3.132.0 |
| 8.4 | 8.4.100.0 | 8.4.100.0 |
| 8.5 | 8.5.110.0 (future release) | 8.5.110.0 (future release) |
from Cisco Security Advisory http://ift.tt/2z67pVR
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