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Summary

This security update resolves a vulnerability in the Microsoft .NET Framework. The vulnerability could cause information disclosure if an attacker injects unencrypted data in the target secure channel and then performs a man-in-the-middle (MiTM) attack between the targeted client and a legitimate server. To learn more about these vulnerabilities, seeĀ Microsoft Security Bulletin MS16-065 and the following article in the Microsoft Knowledge Base:

3155464 MS16-065: Description of the TLS/SSL protocol information disclosure vulnerability (CVE-2016-0149): May 10, 2016

To install this update, you must have Windows Installer 3.1 or a later version installed on the computer.

How to obtain and install this 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 the "Turn on automatic updating in the Control Panel" section of this Safety & Security Center article.

Method 2: Microsoft Download Center

You can obtain the stand-alone update package through the Microsoft Download Center. To install this update, follow the install instructions on the download page.

Download Download security update 3142033

Update deployment information

For deployment information about this update, see Microsoft Knowledge Base Article 3156757.

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 replaces previously released update 2938782.

File hash

File name

SHA1 hash

SHA256 hash

NDP45-KB3142033-x64.exe

3DAD4B2485CB119F05C9A881A410AA3F0C0CF666

01E0CDD93136AF61EFAF950ADC0DADA6A7C3EF11077BA6FA17B9F8ACE13C3B31

NDP45-KB3142033-x86.exe

C874A223DD7EF549FBAA6340DB72F118EC74348E

763480F222065C8075C7E0E825F6720E47531A0E6E330C9B6F6E7313480B5F29

File attributes

The English (United States) version of this update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the 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 the times may change when you perform certain operations on the files.

For all supported x86-based versions of systems

GDR service branch

File name

File version

File size

Date

Time

System.dll

4.0.30319.34294

3,472,032

25-Feb-2016

03:16

LDR service branch

File name

File version

File size

Date

Time

System.dll

4.0.30319.36351

3,478,680

25-Feb-2016

02:57

For all supported x64-based versions of systems

GDR service branch

File name

File version

File size

Date

Time

System.dll

4.0.30319.34294

3,472,032

25-Feb-2016

03:16

LDR service branch

File name

File version

File size

Date

Time

System.dll

4.0.30319.36351

3,478,680

25-Feb-2016

02:57


Help for installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help for protecting your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support


Applies toThis article applies to the following:

  • Microsoft .NET Framework 4.5.2 when used with:

    • Windows Server 2008 R2 Service Pack 1

    • Windows 7 Service Pack 1

    • Windows Server 2008 Service Pack 2

    • Windows Vista Service Pack 2

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