Note

Known issues in this security update

View products that this article applies to.

Summary

This update resolves a vulnerability in the Microsoft .NET Framework that could allow remote code execution when the .NET Framework fails to properly validate input before loading libraries. An attacker who successfully exploits this vulnerability could take control of an affected system. The attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2017-0160.

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.

Additional information about this security update

  • For any Windows Management Instrumentation (WMI) applications returning the following error message:

    Get-WmiObject: The method or operation is not implemented.

    To temporarily disable this update, customers can apply the following registry entry to their system.

    Warning Enabling this registry entry could allow security vulnerabilities including Remote Code Execution.

    Registry entry

    • For 32-bit process on 32-bit system and 64-bit process on 64-bit system:

      HKEY_LOCAL_MACHINE\Software\Microsoft\.NETFramework\v2.0.50727@WMIDisableCOMSecurity=1

    • For 32-bit process on 64-bit system:

      HKEY_LOCAL_MACHINE \Software\Wow6432Node\Microsoft\.NETFramework\v2.0.50727@WMIDisableCOMSecurity=1

    Notes

    • This registry entry should be a DWORD entry.

    • This registry entry restores the previous unsecured state.

  • For more information about this security update as it relates to Windows 7 and Windows Server 2008 R2, see the following article in the Microsoft Knowledge Base:

    4014985 Security Only update for the .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, and 4.6.2 updates for Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1: April 11, 2017

How to obtain and install the update

Method 1: Microsoft Update Catalog

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

Method 2: Windows Software Update Services (WSUS)

On your WSUS server, follow these steps:

  1. Click Start, click Administrative Tools, and then click Microsoft Windows Server Update Services 3.0.

  2. Expand ComputerName, and then click Action.

  3. Click Import Updates.

  4. WSUS will open a browser window in which you may be prompted to install an ActiveX control. You must install the ActiveX control to continue.

  5. Once the control is installed, you will see the Microsoft Update Catalog screen. Enter 4014985 in the Search box, and then click Search.

  6. Locate the .NET Framework packages that match the operating systems, languages, and processors in your environment. Click Add to add them to your basket.

  7. When you have selected all the packages you need, click View Basket.

  8. Click Import to import the packages to your WSUS server.

  9. Click Close once the packages have been imported to return to WSUS.

The updates are now available for installation through WSUS.

Update deployment information

For deployment details for this security update, go to the following article in the Microsoft Knowledge Base:

Security update deployment information: April 11, 2017

Update removal information

Note We do not recommend that you remove any security update. To remove this update, use the Programs and Features item in Control Panel.

Update restart information

This update does not require a system restart after you apply it unless files that are being updated are locked or are being used.

Update replacement information

This update does not replace any previously released update.

File information

File name

SHA1 hash

SHA256 hash

Windows6.1-KB4014573-x64.msu

12E4991474E5150382F317EFD3FCBD8A13090CE5

D7ACD041B35EB252DE313EE6678AB8BAE69607E0066D1B054175DBBDB7EABDC4

Windows6.1-KB4014573-ia64.msu

2BCB2E2E8DF1BD49CCC3FB443A63C1145EF21685

3022331568F6C827DF09F594AA6AD09E66A779085865AE5A3EF7BA8B1904A2A6

Windows6.1-KB4014573-x86.msu

79F87C281B6D35FACE513F821DF86A161EBD2EAB

EE4E70AEDD62833CE1352865C51948920D794A74C28F20323ACDA6F0034179EF

File attributes

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows 7 and Windows Server 2008 R2 file information

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

File name

File version

File size

Date

Time

Platform

System.management.dll

2.0.50727.8758

389,120

20-Mar-2017

22:54

x86

Wminet_utils.dll

2.0.50727.8758

140,960

20-Mar-2017

22:54

x64

System.management.dll

2.0.50727.8758

389,120

20-Mar-2017

22:54

x86

Wminet_utils.dll

2.0.50727.8758

116,896

20-Mar-2017

22:54

x86

File name

File version

File size

Date

Time

Platform

System.management.dll

2.0.50727.8758

389,120

20-Mar-2017

22:54

x86

Wminet_utils.dll

2.0.50727.8758

290,976

20-Mar-2017

22:54

IA-64

System.management.dll

2.0.50727.8758

389,120

20-Mar-2017

22:54

x86

Wminet_utils.dll

2.0.50727.8758

116,896

20-Mar-2017

22:54

x86

File name

File version

File size

Date

Time

Platform

System.management.dll

2.0.50727.8758

389,120

20-Mar-2017

22:54

x86

Wminet_utils.dll

2.0.50727.8758

116,896

20-Mar-2017

22:54

x86

How to obtain help and support for this security update

Applies to

This article applies to the following:

  • Microsoft .NET Framework 3.5.1 when used with:

    • Windows Server 2008 R2 Service Pack 1

    • Windows 7 Service Pack 1

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