The Cisco IOS IPS solution for the ISR router platform has been a vital component for Cisco integrated advanced security capabilities. However, as the solution has been used in diverse customer environments, Cisco has discovered a defect in some versions of Cisco IOS Software that can unexpectedly halt all processes/services when signature update S639 or greater is applied. The router may not recover after the new Cisco IOS IPS signature update has been applied.
With this, to avoid further instances of this problem, Cisco IOS IPS signature updates will not be available for automatic downloading from the Software Download Center. If your device is configured to auto-update, it will not do so since no new updates will be posted. Once we have rectified this problem, we will make the latest signature updates available for automatic downloading again. Until then all signature updates for Cisco IOS IPS must be manually downloaded and applied, allowing you to verify they are only applied to updated versions of Cisco IOS Software. The highest level of quality is critical for all Cisco products and solutions; Cisco will not offer any product/solution that it believes to be below the quality expected by our customers.
You can download the latest Cisco IOS IPS signature updates
here.
Note: Defect CSCtz27137 exists in Cisco IOS Software versions 12.4T, 15.0M, and 15.1M. If you wish to upgrade to Cisco IOS IPS signature version S639 or later, you must first be running a fixed version of Cisco IOS Software on the device. Fixed versions of Cisco IOS Software include: 15.2(4)M, 15.1(3)T4, 15.2(3)T1, 15.1(4)M5, 12.4(24)T8 and later. Please refer to defect CSCtz27137 for additional details and steps to recover impacted devices. If you need further assistance please contact Cisco TAC. For additional information on the auto-update mechanism, please contact the Cisco IOS IPS team at
ask-ios-ips@cisco.com.
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