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CERT Coordination Center

Cayman gateways are vulnerable to a denial of service via a portscan

Vulnerability Note VU#312761

Original Release Date: 2001-08-27 | Last Revised: 2001-08-27


Cayman gateways are vulnerable to a denial of service. An attacker can send a number of TCP connect() requests or SYN packets, in conjunction with a "Bouncing" vulnerability, and can cause a denial of service to the gateway.


The gateway will crash after receiving a number of TCP connect() requests or SYN packets. This can be exploited via the LAN side, and via the WAN side in conjunction with a "bouncing" vulnerability. Installing the newest version will resolve this vulnerability.


A denial of service occurs.


Upgrade to the latest vendor software release.

Vendor Information

Affected   Unknown   Unaffected


Notified:  July 27, 2001 Updated:  August 21, 2001



Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A



This vulnerability was discovered by Karim Elmaizi.

This document was written by Jason Rafail.

Other Information

CVE IDs: None
Severity Metric: 2.81
Date Public: 2001-07-09
Date First Published: 2001-08-27
Date Last Updated: 2001-08-27 15:02 UTC
Document Revision: 7

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