Description: This important update resolves a privately reported vulnerability in Transmission Control Protocol/Internet Protocol (TCP/IP) processing. An attacker who successfully exploited this vulnerability could cause the affected system to stop responding and automatically restart. This update addresses the vulnerability by validating the IP address provided by a DHCP server or assigned by command or API at the local machine.

Update type: Important

Release date: February 12, 2008

Applies to: All

Knowledge base: support.microsoft.com/kb/946456

Download link: 32-bit | 64-bit

Comments: Machines running Windows Vista Service Pack 1 are not affected by this vulnerability. Here are the specifics on the vulnerabilities covered by this update:

• Windows Vista TCP/IP Vulnerability - CVE-2008-0084