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  3. Microsoft Windows Vista Teredo Interface Firewall Bypass Vulnerability

Microsoft Windows Vista Teredo Interface Firewall Bypass Vulnerability

Risk

Medium

Date Discovered

July 10, 2007

Description

Windows Firewall for Windows Vista is prone to a vulnerability that may permit a bypass of existing firewall rules. An attacker may trigger this vulnerability by sending malicious network data through the Teredo network transport system to obtain sensitive information; other attacks are also possible. Note that Windows Vista systems configured with a 'Public' network profile are not vulnerable to this issue.

Technologies Affected

  • Avaya CIE 1.0.2
  • Microsoft Windows Vista
  • Microsoft Windows Vista Beta 1
  • Microsoft Windows Vista Business
  • Microsoft Windows Vista Enterprise
  • Microsoft Windows Vista Home Basic
  • Microsoft Windows Vista Home Premium
  • Microsoft Windows Vista Ultimate
  • Microsoft Windows Vista beta
  • Microsoft Windows Vista beta 2
  • Microsoft Windows Vista x64 Edition

Recommendations

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

If global access isn't needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of successful exploits.

Implement multiple redundant layers of security.

Secondary firewall solutions may prevent exposure to this and other latent vulnerabilities.
The vendor has released advisory MS07-038 and fixes to address this issue; please see the references for details. Microsoft advisory MS07-038 has been revised; please see the referenced bulletin for specific details.

Credits

Jim Hoagland and Ollie Whitehouse of Symantec are 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.
Symantec, Symantec products, Symantec Security Response, and secure@symantec.com are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.

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