A vulnerability in the Microsoft Windows Vista firewall may allow an attacker to send unfiltered IPv6 traffic to a vulnerable system.
Internet Protocol version 6 (IPv6) is an IP standard that is designed to replace the Internet Protocol version 4 (IPv4). The Microsoft Teredo service is used by Microsoft Windows Vista, XP, and Server 2003 to allow clients with only IPv4 connectivity to obtain and use publicly routable IPv6 addresses.
The Teredo service must be manually enabled by an administrator in Windows XP and Server 2003. The Teredo service is enabled by default in Windows Vista, but is not activated until an application requests an IPv6 address.
A remote, unautheticated attacker may be able to send unsolicited and unfiltered IPv6 traffic to a vulnerable system.
Thanks to Symantec and Microsoft for information that was used in this report.
This document was written by Ryan Giobbi.
|Date First Published:||2007-07-11|
|Date Last Updated:||2007-07-11 14:50 UTC|