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Introduction

This update resolves a vulnerability in the Microsoft .NET Framework that could allow denial of service if an attacker sends a few specially crafted requests to an affected .NET-enabled website. By default, ASP.NET is not installed when the .NET Framework is installed on any supported edition of Windows. To be affected by the vulnerability, customers must manually install and enable ASP.NET by registering it with Internet Information Services (IIS).

Summary

Microsoft has released security bulletin MS14-053. Learn more about how to obtain the fixes that are included in this security bulletin:

  • For individual, small business, and organizational users, use the Windows automatic updating feature to install the fixes from Microsoft Update. To do this, see Get security updates automatically on the Microsoft Safety and Security Center website.

  • For IT professionals, see Microsoft Security Bulletin MS14-053 on the Security TechCenter website.

How to obtain help and support for this security update

Help installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support

More information about this security update

Download information

To install this update, install it from Microsoft Windows Update.

Additionally, you can install this update from the Microsoft Download Center.

Command-line switches for this update

Learn about the various command-line switches that are supported by this .NET Framework 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.

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.

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

File name

File version

File size

Date

Time

ServiceMonikerSupport.dll

4.0.30319.34234

28,352

23-Jul-2014

17:56

SMDiagnostics.dll

4.0.30319.34234

64,664

23-Jul-2014

07:13

System.Activities.dll

4.0.30319.34234

1,574,064

23-Jul-2014

07:13

System.IdentityModel.dll

4.0.30319.34234

1,085,104

23-Jul-2014

07:13

System.IdentityModel.Services.dll

4.0.30319.34234

199,896

23-Jul-2014

07:13

System.Runtime.Serialization.dll

4.0.30319.34234

1,050,840

23-Jul-2014

07:13

System.ServiceModel.Channels.dll

4.0.30319.34234

158,928

23-Jul-2014

07:13

System.ServiceModel.Discovery.dll

4.0.30319.34234

312,536

23-Jul-2014

07:13

System.ServiceModel.dll

4.0.30319.34234

6,371,504

23-Jul-2014

07:13

System.ServiceModel.Internals.dll

4.0.30319.34234

245,976

23-Jul-2014

07:13

System.ServiceModel.WasHosting.dll

4.0.30319.34234

39,640

23-Jul-2014

17:56

System.Data.SqlXml.dll

4.0.30319.34234

743,592

23-Jul-2014

07:13

System.Xml.dll

4.0.30319.34234

2,694,280

23-Jul-2014

07:13

msvcr120_clr0400.dll

12.0.51674.34234

875,680

23-Jul-2014

17:56

For all supported x64-based versions of systems

File name

File version

File size

Date

Time

ServiceMonikerSupport.dll

4.0.30319.34234

28,856

23-Jul-2014

18:14

ServiceMonikerSupport.dll

4.0.30319.34234

28,352

23-Jul-2014

17:56

SMDiagnostics.dll

4.0.30319.34234

64,664

23-Jul-2014

07:13

System.Activities.dll

4.0.30319.34234

1,574,064

23-Jul-2014

07:13

System.IdentityModel.dll

4.0.30319.34234

1,085,104

23-Jul-2014

07:13

System.IdentityModel.Services.dll

4.0.30319.34234

199,896

23-Jul-2014

07:13

System.Runtime.Serialization.dll

4.0.30319.34234

1,050,840

23-Jul-2014

07:13

System.ServiceModel.Channels.dll

4.0.30319.34234

158,928

23-Jul-2014

07:13

System.ServiceModel.Discovery.dll

4.0.30319.34234

312,536

23-Jul-2014

07:13

System.ServiceModel.dll

4.0.30319.34234

6,371,504

23-Jul-2014

07:13

System.ServiceModel.Internals.dll

4.0.30319.34234

245,976

23-Jul-2014

07:13

System.ServiceModel.WasHosting.dll

4.0.30319.34234

39,640

23-Jul-2014

17:56

System.Data.SqlXml.dll

4.0.30319.34234

743,592

23-Jul-2014

07:13

System.XML.dll

4.0.30319.34234

2,694,280

23-Jul-2014

07:13

msvcr120_clr0400.dll

12.0.51674.34234

869,536

23-Jul-2014

18:14

msvcr120_clr0400.dll

12.0.51674.34234

875,680

23-Jul-2014

17:56



Applies toThis article applies to the following:

  • The Microsoft .NET Framework 4.5.2 when used with:

    • Windows 7 Service Pack 1

    • Windows Server 2008 R2 Service Pack 1

    • Windows Vista Service Pack 2

    • Windows Server 2008 Service Pack 2

  • The Microsoft .NET Framework 4.5.1 when used with:

    • Windows 7 Service Pack 1

    • Windows Server 2008 R2 Service Pack 1

    • Windows Vista Service Pack 2

    • Windows Server 2008 Service Pack 2

  • The Microsoft .NET Framework 4.5 when used with:

    • Windows 7 Service Pack 1

    • Windows Server 2008 R2 Service Pack 1

    • Windows Vista Service Pack 2

    • Windows Server 2008 Service Pack 2

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