Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones SIP 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:
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
This vulnerability was fixed in firmware releases 7.6.2SR2 and later for Cisco Small Business SPA50x Series IP Phones and Cisco Small Business SPA51x Series IP Phones. Customers should upgrade to the latest firmware release by visiting the Software Center on Cisco.com and navigating to Collaboration Endpoints > IP Phones > Small Business SPA500 Series IP Phones > IP phone model > IP Telephone Firmware.
This vulnerability has not been fixed in the firmware for Cisco Small Business SPA52x Series IP Phones. Cisco will release updates for the affected firmware when they are available. Cisco will also update this advisory with information about those updates when they are available.
from Cisco Security Advisory http://ift.tt/2ijsqb0