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Cisco Security

ICMP Parameter Problem on Datagram

 
Signature ID: 2006/0
Original Release:S1
Release:S592 (download)
Original Release Date:2000 November 27
Latest Release Date:2011 August 31
Default Enabled:False
Default Retired:True
Alarm Severity:Informational
Fidelity:100 

Description

Triggers when a IP datagram is received with the protocol field of the IP header set to 1 (ICMP) and the type field in the ICMP header set to 12 (Parameter Problem on Datagram).ICMP Parameter Problem datagrams may be used to bypass packet filter security policies as they are rarely filtered in either incoming or outgoing traffic. May be used to perform denial of service attacks. No known exploits incorporate this option. This does not preclude the possibility that exploits do exist outside of the realm of Cisco Systems knowledge domain.

Recommended Filter

No recommended filters.

Benign Triggers

ICMP Parameter Problem datagrams are issued when a router has had to drop a datagram because it was malformed. This is a normal and necessary type of network traffic. Large numbers of this datagram type on the network are indicative of network difficulties or may be indicative of hostile actions.

IntelliShield Alerts

IntelliShield ID Headline VersionCVSS ScoreLast Published
153Network Flooding Activity12000 May 01 16:00 GMT

Download

To download this and other IPS update files, please go to Cisco Secure Software Download.

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