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Cisco IOS OSPF Neighbor Announcement Overflow DoS (Bug ID CSCdp58462)

High

Synopsis

The remote host is vulnerable to a Denial of Service (DoS) attack.

Description

The Open Shortest Path First (OSPF) implementation in the remote Cisco IOS software versions is vulnerable to a denial of service if it receives a flood of neighbor announcements in which more than 255 hosts try to establish a neighbor relationship per interface. An attacker may use this flaw to prevent the router from working properly. This vulnerability is documented as Cisco Bug ID CSCdp58462.

Solution

http://www.cisco.com/warp/public/707/cisco-sn-20030221-ospf.shtml