TCP/IP and UDP Network Traffic with a Source Port of 0
IntelliShield: Applied Mitigation Bulletin
2010 February 17 16:59 GMT
2010 March 15 12:31 GMT
Malformed UDP network traffic with a source port of 0 may also indicate malicious activity.
Malformed TCP/IP and UDP network traffic may have a source port of 0. TCP and UDP port 0 is a reserved port and should not normally be assigned. Traffic with this configuration may indicate malicious or abnormal activity. Intrusion detection or intrusion prevention devices may detect and/or block such traffic using signatures. Administrators should be aware that ongoing transmissions of TCP/IP and UDP packets with a source port of 0 could indicate ongoing attacks, such as spoofing or an attempt to identify a targeted host's operating system.
The security vulnerability applies to the following combinations of products.
Security Activity Bulletin
Original Release Base
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