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Novell Bordermanager VPN Service denial-of-service vulnerability

Vulnerability Note VU#432097

Original Release Date: 2004-08-25 | Last Revised: 2004-08-25


A vulnerability exists in the Novell Bordermanager VPN service that could allow a remote attacker to cause a denial of service.


The Novell Bordermanager product includes Virtual Private Network (VPN) capabilities, including support for the standard Internet Key Exchange (IKE) protocol. A flaw exists in the way the VPN service handles certain malformed IKE packets. This flaw creates a remotely exploitable denial of service vulnerability that could cause an affected device to crash. The specific nature of the IKE packet malformation exploiting the vulnerability is unknown.


A remote attacker with the ability to craft malformed IKE packets could cause an "abnormal ending" (abend) in the IKE.NLM module. This condition creates a denial of service on the server and causes clients previously connected to the server to hang.


Apply a patch from the vendor

Patches are available to address this issue. Please see the Systems Affected section of this document for more information.

Vendor Information


Novell Affected

Notified:  April 30, 2004 Updated: August 20, 2004



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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


Novell, Inc. has published Technical Information Document TID10093576 in response to this issue. Users are encouraged to review this document and apply the patches it refers to.

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

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Thanks to the Novell product security team for reporting this vulnerability. This vulnerability was discovered using the Striker test suite from Rapid7.

This document was written by Chad R Dougherty.

Other Information

CVE IDs: None
Severity Metric: 7.43
Date Public: 2004-07-12
Date First Published: 2004-08-25
Date Last Updated: 2004-08-25 13:56 UTC
Document Revision: 16

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