MS09-050: Vulnerabilities in SMB could allow remote code execution

Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows.

INTRODUCTION

Microsoft has released security bulletin MS09-050. To view the complete security bulletin, visit one of the following Microsoft Web sites:

• Home users:

  http:⁠//www.microsoft.com/security/updates/bulletins/200910.aspx Skip the details: Download the updates for your home computer or laptop from the Microsoft Update Web site now:

  http:⁠//update.microsoft.com/microsoftupdate/

• IT professionals:

  http:⁠//www.microsoft.com/technet/security/bulletin/MS09-050.mspx

How to obtain help and support for this security update

Help installing updates:
Support for Microsoft Update

Security solutions for IT professionals:
TechNet Security Troubleshooting and Support

Help protect your computer that is running Windows from viruses and malware:
Virus Solution and Security Center

Local support according to your country:
International Support

Fix it for me

To fix this problem automatically, click the Fix this problem link that is related to disabling or enabling the bulletin. Then, click Run in the File Download dialog box and follow the steps in this wizard.

Note This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.

Note If you are not on the computer that has the problem, you can save the automatic fix to a flash drive or to a CD, and then you can run it on the computer that has the problem.

Let me fix it myself

To fix this problem yourself, see the "Disable SMB v2" section under "Workarounds" in the following security bulletin:

http:⁠//www.microsoft.com/technet/security/advisory/975497.mspx#Workarounds.

FILE INFORMATION

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time (DST) bias. The dates and times may also change when you perform certain operations on the files.

Windows Vista and Windows Server 2008 file information

• The files that apply to a specific product or milestone (RTM, SPn) can be identified by examining the file version numbers as shown in the following table:

  Version	Product	Milestone	Service branch
  6.0.6000.20xxx	Windows Vista	RTM	LDR
  6.0.6001.22xxx	Windows Vista SP1 and Windows Server 2008 SP1	SP1	LDR
  6.0.6002.22xxx	Windows Vista SP2 and Windows Server 2008 SP2	SP2	LDR

• Service Pack 1 is integrated into the release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000. xxxxxx version number.

For all supported x86-based versions of Windows Vista and Windows Server 2008

For all supported x64-based versions of Windows Vista and Windows Server 2008

For all supported IA-64-based versions of Windows Server 2008