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Article ID: 2894842 - Last Review: January 10, 2014 - Revision: 2.0

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Introduction

This security update resolves a vulnerability in the Microsoft .NET Framework 4 that could allow elevation of privilege on a server system if a user views a specially crafted webpage by using a web browser that can run ASP.NET applications.

This security update applies to Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2.

Summary

Microsoft has released security advisory 2905247  (http://support.microsoft.com/kb/2905247/ ) for the Microsoft .NET Framework.

How to obtain help and support for this security update

Help installing updates: Support for Microsoft Update (http://support.microsoft.com/ph/6527)

Security solutions for IT professionals: TechNet Security Troubleshooting and Support (http://technet.microsoft.com/security/bb980617.aspx)

Help protect your Windows-based computer from viruses and malware: Virus Solution and Security Center (http://support.microsoft.com/contactus/cu_sc_virsec_master)

Local support according to your country: International Support (http://support.microsoft.com/common/international.aspx)

More information about this security update

Download information

This update is available for download from the Microsoft Download Center (http://go.microsoft.com/fwlink/?LinkId=344074) .

Installation information

Before you apply this update, make sure that you resolve any view-state message authentication code (MAC) errors that you may have. For information about how to do this, see Resolving view state message authentication code (MAC) errors  (http://support.microsoft.com/kb/2915218/ ) in the Microsoft Knowledge Base.

Prerequisites

To install this update, you must have Windows Installer 3.1 or a later version (http://go.microsoft.com/fwlink/?LinkID=132022) installed on the computer.

Command-line switches for this update

See the various command-line switches  (http://support.microsoft.com/kb/2844699/ ) that are supported by this Microsoft .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 replaces update 2656351  (http://support.microsoft.com/kb/2656351/ ) .

Update removal information

Note We do not recommend that you remove any security update.

To remove this update, use the Add or Remove Programs item or the Programs and Features item in Control Panel.

File information

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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
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GDR service branch
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File nameFile versionFile sizeDateTime
ServiceModelReg.exe4.0.30319.1017192,67217-Oct-201314:37
aspnet_wp.exe4.0.30319.101733,43217-Oct-201314:21
System.Web.Extensions.dll4.0.30319.10171,867,44017-Oct-201314:21
System.Web.dll4.0.30319.10175,256,85617-Oct-201314:21
System.Web.Mobile.dll4.0.30319.1017835,75217-Oct-201314:21
webengine.dll4.0.30319.101715,00017-Oct-201314:21
webengine4.dll4.0.30319.1017496,28017-Oct-201314:21
LDR service branch
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File nameFile versionFile sizeDateTime
ServiceModelReg.exe4.0.30319.2028192,67217-Oct-201313:42
Setup.exe10.0.30319.202878,99217-Oct-201313:27
SetupEngine.dll10.0.30319.2028810,64817-Oct-201313:27
SetupUi.dll10.0.30319.2028296,59217-Oct-201313:27
aspnet_wp.exe4.0.30319.202833,43217-Oct-201313:27
System.Web.Extensions.dll4.0.30319.20281,867,44017-Oct-201313:27
System.Web.dll4.0.30319.20285,260,95217-Oct-201313:27
System.Web.Mobile.dll4.0.30319.2028835,75217-Oct-201313:27
webengine.dll4.0.30319.202815,00017-Oct-201313:27
webengine4.dll4.0.30319.2028496,28017-Oct-201313:27
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For all supported x64-based versions of systems
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GDR service branch
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File nameFile versionFile sizeDateTime
ServiceModelReg.exe4.0.30319.1017261,79217-Oct-201315:10
ServiceModelReg.exe4.0.30319.1017192,67217-Oct-201314:37
aspnet_wp.exe4.0.30319.101741,62417-Oct-201314:56
aspnet_wp.exe4.0.30319.101733,43217-Oct-201314:21
System.Web.Extensions.dll4.0.30319.10171,867,44017-Oct-201314:21
System.Web.dll4.0.30319.10175,226,64817-Oct-201314:55
System.Web.dll4.0.30319.10175,256,85617-Oct-201314:21
System.Web.Mobile.dll4.0.30319.1017835,75217-Oct-201314:21
webengine.dll4.0.30319.101716,53617-Oct-201314:56
webengine.dll4.0.30319.101715,00017-Oct-201314:21
webengine4.dll4.0.30319.1017721,56017-Oct-201314:56
webengine4.dll4.0.30319.1017496,28017-Oct-201314:21
LDR service branch
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File nameFile versionFile sizeDateTime
ServiceModelReg.exe4.0.30319.2028261,79217-Oct-201314:21
ServiceModelReg.exe4.0.30319.2028192,67217-Oct-201313:42
Setup.exe10.0.30319.202878,99217-Oct-201313:27
SetupEngine.dll10.0.30319.2028810,64817-Oct-201313:27
SetupUi.dll10.0.30319.2028296,59217-Oct-201313:27
aspnet_wp.exe4.0.30319.202841,62417-Oct-201314:06
aspnet_wp.exe4.0.30319.202833,43217-Oct-201313:27
System.Web.Extensions.dll4.0.30319.20281,867,44017-Oct-201313:27
System.Web.dll4.0.30319.20285,230,23217-Oct-201314:06
System.Web.dll4.0.30319.20285,260,95217-Oct-201313:27
System.Web.Mobile.dll4.0.30319.2028835,75217-Oct-201313:27
webengine.dll4.0.30319.202816,53617-Oct-201314:06
webengine.dll4.0.30319.202815,00017-Oct-201313:27
webengine4.dll4.0.30319.2028721,56017-Oct-201314:06
webengine4.dll4.0.30319.2028496,28017-Oct-201313:27
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For all supported IA-64-based versions of systems
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GDR service branch
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File nameFile versionFile sizeDateTime
ServiceModelReg.exe4.0.30319.1017545,44017-Oct-201315:49
ServiceModelReg.exe4.0.30319.1017192,67217-Oct-201314:37
aspnet_wp.exe4.0.30319.101781,04817-Oct-201315:33
aspnet_wp.exe4.0.30319.101733,43217-Oct-201314:21
System.Web.Extensions.dll4.0.30319.10171,867,44017-Oct-201314:21
System.Web.dll4.0.30319.10174,845,72017-Oct-201315:33
System.Web.dll4.0.30319.10175,256,85617-Oct-201314:21
System.Web.Mobile.dll4.0.30319.1017835,75217-Oct-201314:21
webengine.dll4.0.30319.101726,26417-Oct-201315:33
webengine.dll4.0.30319.101715,00017-Oct-201314:21
webengine4.dll4.0.30319.10171,341,59217-Oct-201315:33
webengine4.dll4.0.30319.1017496,28017-Oct-201314:21
LDR service branch
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File nameFile versionFile sizeDateTime
ServiceModelReg.exe4.0.30319.2028545,44017-Oct-201315:03
ServiceModelReg.exe4.0.30319.2028192,67217-Oct-201313:42
Setup.exe10.0.30319.202878,99217-Oct-201313:27
SetupEngine.dll10.0.30319.2028810,64817-Oct-201313:27
SetupUi.dll10.0.30319.2028296,59217-Oct-201313:27
aspnet_wp.exe4.0.30319.202881,04817-Oct-201314:48
aspnet_wp.exe4.0.30319.202833,43217-Oct-201313:27
System.Web.Extensions.dll4.0.30319.20281,867,44017-Oct-201313:27
System.Web.dll4.0.30319.20284,849,81617-Oct-201314:48
System.Web.dll4.0.30319.20285,260,95217-Oct-201313:27
System.Web.Mobile.dll4.0.30319.2028835,75217-Oct-201313:27
webengine.dll4.0.30319.202826,26417-Oct-201314:48
webengine.dll4.0.30319.202815,00017-Oct-201313:27
webengine4.dll4.0.30319.20281,342,61617-Oct-201314:48
webengine4.dll4.0.30319.2028496,28017-Oct-201313:27
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Applies to

This article applies to the following:
  • Microsoft .NET Framework 4 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
    • Windows XP Service Pack 3
    • Windows Server 2003 Service Pack 2
Keywords: 
kbsecvulnerability kbsecurity kbsecbulletin kbfix kbexpertiseinter kbbug atdownload KB2894842
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