|Patch Description||Security Update for Windows Vista for x64-based Systems (KB978338)|
|Bulletin Title||Vulnerability in Windows ISATAP Component Could Allow Spoofing (978338)|
|Bulletin Summary||This vulnerability could allow an attacker to spoof an IPv4 address so that it may bypass filtering devices that rely on the source IPv4 address. The security update addresses the vulnerability by changing the manner in which the Windows TCP/IP stack checks the source IPv6 address in a tunneled ISATAP packet. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.|
|Superceding Bulletin Id||None|
|Patch Release Date||Apr 13, 2010|
Affected Product Information
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