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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

Overview

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

Description

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.

Impact

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.

Solution

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

432097
 
Affected   Unknown   Unaffected

Novell

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

Status

  Vulnerable

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.

Addendum

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.


CVSS Metrics

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

References

Acknowledgements

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: 13

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