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Category:   Application (Firewall)  >   Windows Vista Firewall Vendors:   Microsoft
Windows Vista Firewall Teredo Interface Discloses Network Information to Remote Users and May Let Remote Users Bypass Firewall Rules
SecurityTracker Alert ID:  1018354
SecurityTracker URL:  http://securitytracker.com/id/1018354
CVE Reference:   CVE-2007-1535, CVE-2007-3038   (Links to External Site)
Updated:  Jul 10 2007
Original Entry Date:  Jul 10 2007
Impact:   Disclosure of system information, Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in the Windows Vista Firewall. A remote user can gain information about the target network and may be able to bypass the firewall.

A remote user can activate the Teredo interface in certain cases to cause the interface to disclose the target system's Teredo network address.

A remote user can connect to any port on the target system that is accessible on the local network.

A remote user may also be able to, via tunneling, connect with other network systems.

Microsoft credits Jim Hoagland and Ollie Whitehouse of Symantec with reporting this vulnerability.

Impact:   A remote user can gain information about the target network.

A remote user may be able to bypass the firewall rules.

Solution:   The vendor has issued the following fixes:

Windows Vista:

http://www.microsoft.com/downloads/details.aspx?FamilyId=e9b64746-6afa-4a30-833d-e058e000c821

Windows Vista x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=0df5d190-3ad7-42d5-8629-43c47ec450cb

A restart is required.

The Microsoft advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms07-038.mspx

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms07-038.mspx (Links to External Site)
Cause:   Access control error, State error
Underlying OS:  Windows (Vista)

Message History:   None.


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