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  3. Microsoft Client Service for Netware Denial of Service Vulnerability

Microsoft Client Service for Netware Denial of Service Vulnerability

Risk

Medium

Date Discovered

November 14, 2006

Description

Microsoft Client Service for Netware is prone to a denial-of-service vulnerability. Exploiting this issue would cause the affected computer to crash, denying service to legitimate users.

Technologies Affected

  • Avaya Messaging Application Server
  • Avaya S8100 Media Servers
  • Avaya S8100 Media Servers R10
  • Avaya S8100 Media Servers R11
  • Avaya S8100 Media Servers R12
  • Avaya S8100 Media Servers R6
  • Avaya S8100 Media Servers R7
  • Avaya S8100 Media Servers R8
  • Avaya S8100 Media Servers R9
  • HP Storage Management Appliance 2.1
  • Microsoft Windows 2000 Server SP1
  • Microsoft Windows 2000 Server SP2
  • Microsoft Windows 2000 Server SP3
  • Microsoft Windows 2000 Server SP4
  • Microsoft Windows Server 2003 Enterprise Edition
  • Microsoft Windows Server 2003 Enterprise Edition SP1
  • Microsoft Windows Server 2003 Standard Edition
  • Microsoft Windows Server 2003 Standard Edition SP1
  • Microsoft Windows Server 2003 Web Edition
  • Microsoft Windows Server 2003 Web Edition SP1
  • Microsoft Windows XP Professional SP1
  • Microsoft Windows XP Professional SP2
  • Microsoft Windows XP Tablet PC Edition SP1
  • Microsoft Windows XP Tablet PC Edition SP2
  • Nortel Networks Centrex IP Element Manager 7.0.0
  • Nortel Networks Centrex IP Element Manager 8.0.0
  • Nortel Networks Centrex IP Element Manager 9.0.0

Recommendations

Block external access at the network boundary, unless external parties require service.

Restrict access to the affected computer at the network perimeter. Grant access for trusted hosts and networks only.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.

Use NIDS to monitor networks for anomalous activity and report attempted attacks. Audit logs regularly.
Microsoft has released a security advisory addressing this issue. Please see the references for more information.

Credits

Sam Arun Raj of McAfee is credited with the discovery of this vulnerability.
Copyright © Symantec Corporation.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from secure@symantec.com.

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, this information.
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