Cisco has released free software updates that address the vulnerabilities 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:
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:
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.
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-20190417-aironet-shell: Cisco Aironet Series Access Points Development Shell Access Vulnerability
- cisco-sa-20190417-wlc-csrf: Cisco Wireless LAN Controller Software Cross-Site Request Forgery Vulnerability
- cisco-sa-20190417-wlc-gui: Cisco Wireless LAN Controller Software GUI Configuration Denial of Service Vulnerabilities
- cisco-sa-20190417-wlc-iapp: Cisco Wireless LAN Controller Software IAPP Message Handling Denial of Service Vulnerabilities
In the following table, the left column lists major Cisco software releases. The center column indicates whether a major release is affected by the vulnerabilities described in this advisory and the first minor release that includes the fix for these vulnerabilities. The right column indicates whether a major release is affected by all the vulnerabilities described in this collection of advisories and which release includes fixes for those vulnerabilities.
|Cisco Wireless LAN Controller Major Software Release
|First Fixed Release for These Vulnerabilities
|Recommended Release for All Vulnerabilities Described in the Collection of Advisories
|Prior to 8.0