CVE-2009-2872 Information

Description

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.

Reference

http://osvdb.org/58333 http://tools.cisco.com/security/center/viewAlert.x?alertId=18893 http://www.cisco.com/en/US/products/products_applied_mitigation_bulletin09186a0080af8113.html http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8115.shtml http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html http://www.securitytracker.com/id?1022930 http://www.vupen.com/english/advisories/2009/2759