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.
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CISCO VIRTUAL CONTROLLER UPGRADE
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. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades. In most cases this will be a maintenance upgrade to software that was previously purchased. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:Īdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner.
CISCO VIRTUAL CONTROLLER INSTALL
Customers may only install and expect support for software versions and feature sets for which they have purchased a license. This advisory is available at the following link:Ĭisco has released free software updates that address the vulnerability described in this advisory. There are no workarounds that address this vulnerability. A successful exploit could allow the attacker to cause an unexpected restart of the device, resulting in a DoS condition.Ĭisco has released software updates that address this vulnerability. Conversely, an unauthenticated attacker could exploit this vulnerability by persuading a user of the web interface to click the crafted URL. An attacker could exploit this vulnerability by authenticating with low privileges to an affected controller and submitting the crafted URL to the web interface of the affected device.
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The vulnerability exists due to a failure of the HTTP parsing engine to handle specially crafted URLs. A vulnerability in the web interface of Cisco Wireless LAN Controller Software could allow a low-privileged, authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.