Cisco Security Advisory
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AV:N/AC:M/Au:S/C:N/I:N/A:C/E:POC/RL:OF/RC:C
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A vulnerability in the Internet Key Exchange version 2 (IKEv2) code of Cisco IOS and IOS XE could allow an unauthenticated, remote attacker to cause a reload of the affected device.
The vulnerability is due to improper handling of crafted IKEv2 packets. The vulnerability applies only to IKEv2 devices acting as clients or IKEv2 initiators. An attacker could exploit this vulnerability by sending crafted packets to the affected devices. An attacker, however, would need to be able to force the affected device to connect to a rogue IKEv2 server under its control. An exploit could allow the attacker to cause a reload of the affected system.
Cisco has released software updates that address this vulnerability. Workarounds that mitigate this vulnerability are not available.
This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-ios-ikev
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There are no workarounds that address this vulnerability.
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Cisco provides information about fixed software in Cisco bugs, which are accessible through the Cisco Bug Search Tool.
When considering software upgrades, customers are advised to consult the Cisco Security Advisories and Responses archive at http://www.cisco.com/go/psirt and review subsequent advisories 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.
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The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
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This vulnerability was reported to Cisco by Reuben Farrelly.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Show LessVersion Description Section Status Date 1.0 Initial public release — Final 2016-October-05
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