Summary

This security update resolves a vulnerability in Microsoft Silverlight. The vulnerability could allow remote code execution if a user visits a compromised website that contains a specially crafted Silverlight application. An attacker would have no way to force a user to visit a compromised website. Instead, an attacker would have to convince the user to visit the website, typically by enticing the user to click a link in either an email message or instant message that takes the user to the attacker's website.

To learn more about this vulnerability, see Microsoft Security Bulletin MS17-013. Important

  • All future security and nonsecurity updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.

  • 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 get security updates automatically, see Windows Update: FAQ.

Note For Windows RT 8.1, this update is available through Windows Update only.

Method 2: Microsoft Update Catalog

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

Method 3: Microsoft Download Center

You can get the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

Click the download link in Microsoft Security Bulletin MS17-013 that corresponds to the version of Windows that you are running.

Security update deployment information

Silverlight 5 for Windows (all supported releases)

Reference table

The following table contains the security update information for this software.

Security update file names

For Microsoft Silverlight 5 when installed on all supported 32-bit releases of Microsoft Windows:
silverlight.exe

 

For Microsoft Silverlight 5 Developer Runtime when installed on all supported 32-bit releases of Microsoft Windows:
silverlight_developer.exe

 

For Microsoft Silverlight 5 when installed on all supported 64-bit releases of Microsoft Windows:
silverlight_x64.exe

 

For Microsoft Silverlight 5 Developer Runtime when installed on all supported 64-bit releases of Microsoft Windows:
silverlight_developer_x64.exe

Installation switches

See the Silverlight Enterprise Deployment Guide

Restart requirement

This update does not require a restart.

Removal information

Use Add or Remove Programs item in Control Panel. (Note that the update cannot be removed without removing Silverlight.)

File information

See Microsoft Knowledge Base article 3193713

Registry key verification

For 32-bit installations of Microsoft Silverlight 5:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Silverlight "Version" = "5.1. 50905.0"

 

For 64-bit installations of Microsoft Silverlight 5:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Silverlight "Version" = "5.1.50901.0"
and
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Silverlight "Version" = "5.1. 50905.0"

 

File information

Package name

Package hash SHA 1

Package Hash SHA 2

Silverlight.exe

97B56D4E390241AE1BAABE65D41E4080270BCB1B

6B846ECD6964515870AA10A58889204D05CEBB0B993C1B03ED4A3E4713E167EB

Silverlight_Developer.exe

CD97A5D8F516D9E69B2BD4118EDD1D13ACB96EC3

7C312CEE79D3A77533B2F46A2A0A212A72CE804C7ACAF1614E38282D87AAA2E1

Silverlight_Developer_x64.exe

37EBA3B1F5A710F45AFDD1968BDBD3BCFE562DA3

3F22C8210C96BB9FEBE1C1A57705B5FF3C8CF40F9BCD4AB4D3B5D084871343DA

Silverlight_x64.exe

16712886955BAB475549184015D425E3091A6357

40EF19A61C23EE3D6BFCADBE7F87A56FD7ABCE44E305BAB68164B64D77FF30EC


Sliverlight.exe

File name

File version

File size

Date

Time

Hashes

Platform

Install.exe

5.1.50905.0

230,080

10-Feb-2017

22:15

MD5: A2215F15DD91EFCBB525B4415D66BDA0
SHA1: 7BC794CD61A4F8620E360F6BC53DD78595A2AD7F

x86

Install.res.dll

5.1.50905.0

438,440

10-Feb-2017

20:40

MD5: 8E0A593379EFC953EF0B1B4D4535F31E
SHA1: E62098B2D05C0165EB24236E307C7FED6A5DCAD3

x86

Microsoft_defaults.exe

1.0.0.1

119,968

27-May-2015

04:13

MD5: 64CADAEF6DCF7B6A6171FC1A2BEE94A1
SHA1: 89B67F711F1F98F9991C688B32C555CC597F09BC

x86

Silverlight.7z

Not applicable

6,728,269

10-Feb-2017

22:16

Not applicable

Not applicable

Silverlight.msi

Not applicable

38,912

10-Feb-2017

20:57

Not applicable

Not applicable

Silverlight_Developer.exe

File name

File version

File size

Date

Time

Hashes

Platform

Install.exe

5.1.50905.0

230,616

10-Feb-2017

22:32

MD5: 272A0A0747A8794B124ACFEE8ACB853E
SHA1: D90952469F09CCCF8BBF34E35678076C0E32E333

x86

Install.res.dll

5.1.50905.0

438,440

10-Feb-2017

20:40

MD5: 8E0A593379EFC953EF0B1B4D4535F31E
SHA1: E62098B2D05C0165EB24236E307C7FED6A5DCAD3

x86

Microsoft_defaults.exe

1.0.0.1

119,968

27-May-2015

04:13

MD5: 64CADAEF6DCF7B6A6171FC1A2BEE94A1
SHA1: 89B67F711F1F98F9991C688B32C555CC597F09BC

x86

Silverlight.7z

Not applicable

6,728,473

10-Feb-2017

22:32

Not applicable

Not applicable

Silverlight.msi

Not applicable

38,912

10-Feb-2017

20:57

Not applicable

Not applicable

Silverlight_Developer_x64.exe

File name

File version

File size

Date

Time

Hashes

Platform

Install.exe

5.1.50905.0

290,008

10-Feb-2017

23:11

MD5: EACC31D5FEE297F788E6A03DD5C85908
SHA1: A7BEEB9582F39396815EC5F8292E6F8A54D5A872

x64

Install.res.dll

5.1.50905.0

438,440

10-Feb-2017

21:39

MD5: D58E9CCA6379FAEB2014A2CF8ADC4BB6
SHA1: 768F0B06984E5F474DCF3EE110EE3CCE9FEAB8F0

x64

Microsoft_defaults.exe

1.0.0.1

119,968

27-May-2015

04:13

MD5: 64CADAEF6DCF7B6A6171FC1A2BEE94A1
SHA1: 89B67F711F1F98F9991C688B32C555CC597F09BC

x86

Silverlight.7z

Not applicable

12,835,982

10-Feb-2017

23:12

Not applicable

Not applicable

Silverlight.msi

Not applicable

38,912

10-Feb-2017

21:42

Not applicable

Not applicable

Silverlight_x64.exe

File name

File version

File size

Date

Time

Hashes

Platform

Install.exe

5.1.50905.0

289,472

10-Feb-2017

22:53

MD5: 789192FE3964EA31125D8B44F9F7D10A
SHA1: 19B9F84AE3984E23A0FC4FD27C4B12B6B4DCBC04

x64

Install.res.dll

5.1.50905.0

438,440

10-Feb-2017

21:39

MD5: D58E9CCA6379FAEB2014A2CF8ADC4BB6
SHA1: 768F0B06984E5F474DCF3EE110EE3CCE9FEAB8F0

x64

Microsoft_defaults.exe

1.0.0.1

119,968

27-May-2015

04:13

MD5: 64CADAEF6DCF7B6A6171FC1A2BEE94A1
SHA1: 89B67F711F1F98F9991C688B32C555CC597F09BC

x86

Silverlight.7z

Not applicable

12,839,603

10-Feb-2017

22:54

Not applicable

Not applicable

Silverlight.msi

Not applicable

38,912

10-Feb-2017

21:42

Not applicable

Not applicable


 

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

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