CVE-2009-2872

Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are enabled, allows remote attackers to cause a denial of service (device reload) via a malformed packet that is not properly handled during switching from one tunnel to a second tunnel, aka Bug IDs CSCsh97579 and CSCsq31776.

Date published : 2009-09-28

http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8115.shtml

http://tools.cisco.com/security/center/viewAlert.x?alertId=18893