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.
References
- http://tools.cisco.com/security/center/viewAlert.x?alertId=18893
- 20090923 Cisco IOS Software Tunnels Vulnerability vendor-advisory
- 1022930 vdb-entry
- ADV-2009-2759 vdb-entry
- http://www.cisco.com/en/US/products/products_applied_mitigation_bulletin09186a0080af8113.html
- 58333 vdb-entry
- http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html