Security update for the Win32k information disclosure vulnerability in Windows Server 2008: August 8, 2017

Summary

An information disclosure vulnerability exists when the win32k component improperly provides kernel information. An attacker who successfully exploits the vulnerability could obtain information to further compromise the user’s system

To learn more about the vulnerability, go to CVE-2017-8666.

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Important

• If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

How to obtain and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Deployment information

For deployment details for this security update, go to the following article in the Microsoft Knowledge Base:
Security update deployment information: August 8, 2017

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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 together with your current daylight-saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

Windows Server 2008 file information

**Note:**The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

How to obtain help and support for this security update

Help for installing updates: Windows Update: FAQ

Security solutions for IT professionals: TechNet Security Support and Troubleshooting

Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure

Local support according to your country: International Support

File Information

File hash information

File name	SHA1 hash	SHA256 hash
Windows6.0-KB4035055-x86.msu	1D38A02A57818D806B532D9D011E600401579E1C	6FCBAE66EA04E6AAC3BEF2B7B88DB0B0C1DCD76E22E4215756B0CDF156902157
Windows6.0-KB4035055-x64.msu	42A0129A2CFC06A9BE9BE4B6D4900BA68632B81E	2E2B4216BEA6039C246EBE88B54C0E12A5E870EEDE7F47C78C68001F3EA4FDFB
Windows6.0-KB4035055-ia64.msu	6853039701F51AECABFAAC1BCF84EA82654F1896	0A2FEC499D91B94415F81670641546F07D6758746FC156612D8C4CE4223DE769

For all supported x86-based versions

File name	File version	File size	Date	Time	Platform
Win32k.sys	6.0.6002.19836	2,075,648	09-Jul-2017	14:32	x86
Win32k.sys	6.0.6002.24157	2,083,840	09-Jul-2017	23:29	x86

For all supported x64-based versions

File name	File version	File size	Date	Time	Platform
Win32k.sys	6.0.6002.19836	2,808,832	09-Jul-2017	14:55	x64
Win32k.sys	6.0.6002.24157	2,810,880	09-Jul-2017	23:52	x64

For all supported ia64-based versions

File name	File version	File size	Date	Time	Platform
Win32k.sys	6.0.6002.19836	6,694,912	09-Jul-2017	14:37	IA-64
Win32k.sys	6.0.6002.24157	6,705,152	09-Jul-2017	23:32	IA-64