Cisco CBOS Oversized Packet DHCP Denial Of Service Vulnerability
CBOS (Cisco Broadband Operating System) is the operating system for Cisco 600 series routers.
It is possible to cause the CPE (Customer Premises Equipment) to freeze by sending a large packet to the DHCP port.
The following devices in the Cisco 600 series of routers are affected:
605, 626, 627, 633, 673, 675, 675e, 676, 677, 677i and 678.
This vulnerability has been assigned Cisco Bug ID CSCdw90020.