Description of the security update for the vulnerability in Windows Server 2008, Windows Embedded POSReady 2009, and Windows Embedded Standard 2009: May 08, 2018

Summary

An elevation of privilege vulnerability and an information disclosure vulnerability exist in Windows when the Win32k component fails to properly handle objects in memory.

To learn more about the vulnerabilities, see the following Common Vulnerabilities and Exposures (CVE).

• CVE-2018-8120
• CVE-2018-8124
• CVE-2018-8164
• CVE-2018-8166

More Information

ImportantIf 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.

Additional non-security issues that are resolved by this update

In addition to the elevation of privilege vulnerability and information disclosure vulnerabilities that are addressed by this security update, the following non-security issue is also resolved:

• After you install security update KB 4089344, Monthly Rollup KB 4088875, Security-only update KB 4088878, Monthly Rollup KB 4088877, or Security-only update KB 4088880, you receive a Stop error 0xAB error message that resembles the following when you log off the computer:

SESSION_HAS_VALID_POOL_ON_EXIT (ab)

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: May 08, 2018

More Information

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-KB4131188-x86.msu	3E4B4017F8C69A24614D8C467738B166307C7479	D16CD73C12186F410C9DC199ACC75D97D0FECE06E02DC61E250BE7A93BA373AD
Windows6.0-KB4131188-x64.msu	C962A65841C833CCAD02829D02E3F13BA567C239	6826E3406BE10990BABE2A0E839F03F0999DB63D7598F890F74952FF590AC78D
Windows6.0-KB4131188-ia64.msu	9E969C4DD9004E23A977EF197F635DEE1BFE735F	4257170F0E06894F93D395484D878261F8618D9890A905EFA6D628D90D4012AE
WindowsXP-KB4131188-x86-Embedded-ENU.exe	3B549E0EEFED45285BD1F9FD87D168B09259AE34	32E3F2808DA66AE3AF36570D1CD4C994D0931475FAA6776F9DF729EC6FDCAE7D

For all supported x86-based versions

File name	File version	File size	Date	Time	Platform
Win32k.sys	6.0.6002.24363	2,084,352	10-Apr-2018	13:54	x86

For all supported x64-based versions

File name	File version	File size	Date	Time	Platform
Win32k.sys	6.0.6002.24363	2,815,488	10-Apr-2018	14:07	x64

For all supported ia64-based versions

File name	File version	File size	Date	Time	Platform
Win32k.sys	6.0.6002.24363	6,702,592	10-Apr-2018	14:04	IA-64
Windows Embedded POSReady 2009 and Windows Embedded Standard 2009 file information

For all supported x86-based versions

File name	File version	File size	Date	Time	Platform
Win32k.sys	5.1.2600.7472	1,907,328	10-Apr-2018	15:42	x86
Updspapi.dll	6.3.13.0	382,840	31-Jan-2018	18:26	x86