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iDefense Security Advisory 10.02.06: Novell GroupWise Messenger nmma.exe DoS Vulnerability
From: iDefense Labs <labs-no-reply () idefense com>
Date: Tue, 03 Oct 2006 12:14:32 -0400
Novell GroupWise Messenger nmma.exe DoS Vulnerability
iDefense Security Advisory 10.02.06
Oct 02, 2006
Novell Messenger is a corporate, cross-platform instant messaging
product that is based on Novell eDirectory. More information is
available at the following site:
Remote exploitation of a DoS vulnerability in Novell Inc.'s GroupWise
Messenger could allow attackers to crash the Messenger server.
The vulnerability specifically exists due to improper handling of a an
HTTP POST request with a modified 'val' paramater. When such a request
is received, a NULL pointer dereference occurs, leading to a crash of
Successful exploitation of this vulnerability would result in the server
crashing, rendering it unusable until it is restarted. Further
exploitation does not appear possible. In order to exploit this
vulnerability, an attacker must send a specially constructed HTTP
request to the server on TCP port 8300.
iDefense has confirmed this vulnerability in Novell GroupWise Messenger
version 2. All previous versions are suspected vulnerable.
iDefense is currently unaware of any effective workarounds for this
VI. VENDOR RESPONSE
Novell has released updates in the form of Hot Patches. More
information on the security update can be found via the following link.
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2006-4511 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org), which standardizes names for
VIII. DISCLOSURE TIMELINE
08/17/2006 Initial vendor notification
08/18/2006 Initial vendor response
10/02/2006 Coordinated public disclosure
CIRT.DK is credited with the discovery of this vulnerability.
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X. LEGAL NOTICES
Copyright © 2006 iDefense, Inc.
Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically, please
email customerservice () idefense com for permission.
Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct, indirect,
or consequential loss or damage arising from use of, or reliance on,
- iDefense Security Advisory 10.02.06: Novell GroupWise Messenger nmma.exe DoS Vulnerability iDefense Labs (Oct 03)