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VID 29158
Severity 30
Port 22
Protocol TCP
Class CISCO
Detailed Description The CISCO IOS system does not disable CDP service. The Cisco Discovery Protocol(CDP) is a proprietary protocol that Cisco devices use to identify each other on a LAN segment. It is useful only in specialized situations, and is considered to be a security risk. There have been published denial of service attacks that use CDP. CDP should be completely disabled unless there is a need for it.

* Platforms Affected:
CISCO IOS
Recommendation Disable CDP service as follows :
Router# config terminal
Router(config)# no cdp run

or on each interface :
Router# config terminal
Router(config)# interface FastEthernet0/1
Router(config-if)# no cdp enable
Related URL (CVE)
Related URL (SecurityFocus)
Related URL (ISS)