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  3. Microsoft Windows Web Client Buffer Overflow Vulnerability

Microsoft Windows Web Client Buffer Overflow Vulnerability

Risk

High

Date Discovered

February 14, 2006

Description

Microsoft Windows Web Client is prone to a buffer overflow. Successful exploitation could allow arbitrary code execution with System privileges.

Technologies Affected

  • Microsoft Windows Server 2003 Datacenter Edition
  • Microsoft Windows Server 2003 Datacenter Edition Itanium
  • Microsoft Windows Server 2003 Datacenter Edition Itanium SP1
  • Microsoft Windows Server 2003 Datacenter Edition SP1
  • Microsoft Windows Server 2003 Datacenter x64 Edition
  • Microsoft Windows Server 2003 Enterprise Edition
  • Microsoft Windows Server 2003 Enterprise Edition Itanium
  • Microsoft Windows Server 2003 Enterprise Edition Itanium SP1
  • Microsoft Windows Server 2003 Enterprise Edition SP1
  • Microsoft Windows Server 2003 Enterprise x64 Edition
  • Microsoft Windows Server 2003 Standard Edition
  • Microsoft Windows Server 2003 Standard Edition SP1
  • Microsoft Windows Server 2003 Standard x64 Edition
  • Microsoft Windows Server 2003 Web Edition
  • Microsoft Windows Server 2003 Web Edition SP1
  • Microsoft Windows XP Home
  • Microsoft Windows XP Home SP1
  • Microsoft Windows XP Home SP2
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Professional SP1
  • Microsoft Windows XP Professional SP2
  • Microsoft Windows XP Professional x64 Edition

Recommendations

Permit local access for trusted individuals only. Where possible, use restricted environments and restricted shells.

Due to the possibility of exploitation by local attackers, permit local access for trusted individuals only.

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

Configure network access controls to filter unauthorized traffic to TCP ports 139 and 445. Allow access for trusted hosts and networks only.

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

Deploy NIDS to monitor network traffic for signs of suspicious or anomalous activity. This may help detect malicious actions that an attacker may take after successfully exploiting vulnerabilities in applications.

Implement multiple redundant layers of security.

Memory-protection schemes (such as non-executable stack and heap configurations and randomly mapped memory segments) will complicate exploitation of memory-corruption vulnerabilities.
Fixes are available:

Credits

Discovered by Kostya Kortchinsky.
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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