-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Cisco IOS Software Internet Key Exchange Version 2 Denial of Service Vulnerability

Advisory ID: cisco-sa-20140326-ikev2

Revision 1.0

For Public Release 2014 March 26 16:00  UTC (GMT)

Summary
=======

A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of the affected device that would lead to a denial of service (DoS) condition.

The vulnerability is due to how an affected device processes certain malformed IKEv2 packets. An attacker could exploit this vulnerability by sending malformed IKEv2 packets to an affected device to be processed. An exploit could allow the attacker to cause a reload of the affected device that would lead to a DoS condition.

Although IKEv2 is automatically enabled on Cisco IOS Software and Cisco IOS XE Software devices when the Internet Security Association and Key Management Protocol (ISAKMP) is enabled, the vulnerability can be triggered only by sending a malformed IKEv2 packet.

Only IKEv2 packets can trigger this vulnerability.

Cisco has released free software updates that address this vulnerability.
There are no workarounds to mitigate this vulnerability.

This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140326-ikev2

Note: The March 26, 2014, Cisco IOS Software Security Advisory bundled publication includes six Cisco Security Advisories. All advisories address vulnerabilities in Cisco IOS Software. Each Cisco IOS Software Security Advisory lists the Cisco IOS Software releases that correct the vulnerability or vulnerabilities detailed in the advisory as well as the Cisco IOS Software releases that correct all Cisco IOS Software vulnerabilities in the March 2014 bundled publication.

Individual publication links are in Cisco Event Response: Semiannual Cisco IOS Software Security Advisory Bundled Publication at the following link:

http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_mar14.html
-----BEGIN PGP SIGNATURE-----
Version: GnuPG/MacGPG2 v2.0.22 (Darwin)
Comment: GPGTools - http://gpgtools.org
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=XFWb
-----END PGP SIGNATURE-----