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Introduction

Resolves a vulnerability in the Microsoft .NET Framework that could allow identity spoofing on a client system.

Summary

Microsoft has released the security bulletin MS13-040. You can view the complete security bulletin by going to one of the following Microsoft websites:

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

Download information

This update is available for download from the Microsoft Download Center:

http://go.microsoft.com/fwlink/?LinkId=279583

Prerequisites

To install this update, you must have Windows Installer 3.1 or a later version installed on the computer. To obtain the latest version of Windows Installer, go to the following Microsoft website:

http://go.microsoft.com/fwlink/?LinkID=132022

Command-line switches for this update

For information about the various command-line switches that are supported by this update, click the following article number to view the article in the Microsoft Knowledge Base:

2844699 Command-line switches for Microsoft .NET Framework security update packages

Restart information

This update does not require a system restart after you apply it unless the 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.

File information

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.

GDR Service Branch

File name

File version

File size

Date

Time

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

00:22

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

01:54

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

01:13

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:19

system.security.resources.dll

2.0.50727.5420

32,768

12-Nov-2010

23:25

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:35

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

01:13

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:35

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

00:49

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

02:20

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:39

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:14

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:55

system.security.resources.dll

2.0.50727.5420

16,896

13-Nov-2010

00:39

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:30

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

01:57

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:34

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

00:51

system.security.resources.dll

2.0.50727.5420

32,768

12-Nov-2010

23:39

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

02:30

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

02:04

system.security.resources.dll

2.0.50727.5420

16,384

12-Nov-2010

23:56

system.security.resources.dll

2.0.50727.5420

16,384

13-Nov-2010

01:44

system.security.dll

2.0.50727.5469

262,144

13-Feb-2013

06:04

LDR Service Branch

File name

File version

File size

Date

Time

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

09:00

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

09:02

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

08:55

system.security.resources.dll

2.0.50727.5420

28,672

14-Dec-2012

10:51

system.security.resources.dll

2.0.50727.5420

32,768

18-Dec-2012

09:00

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

09:03

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

08:55

system.security.resources.dll

2.0.50727.5420

28,672

15-Dec-2012

08:18

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

09:00

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

08:59

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

09:02

system.security.resources.dll

2.0.50727.5420

28,672

15-Dec-2012

08:18

system.security.resources.dll

2.0.50727.5420

28,672

15-Dec-2012

08:19

system.security.resources.dll

2.0.50727.5420

16,896

18-Dec-2012

09:00

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

09:03

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

09:03

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

09:02

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

09:02

system.security.resources.dll

2.0.50727.5420

32,768

18-Dec-2012

09:03

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

08:58

system.security.resources.dll

2.0.50727.5420

28,672

18-Dec-2012

09:03

system.security.resources.dll

2.0.50727.5420

16,384

15-Dec-2012

08:20

system.security.resources.dll

2.0.50727.5420

16,384

15-Dec-2012

08:20

system.security.dll

2.0.50727.7018

262,144

14-Feb-2013

00:38


GDR Service Branch

File name

File version

File size

Date

Time

system.security.dll

2.0.50727.5469

262,144

13-Feb-2013

06:03

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

00:30

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

02:01

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

01:22

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:26

system.security.resources.dll

2.0.50727.5420

32,768

12-Nov-2010

23:31

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:35

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

01:22

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:52

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

01:03

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

02:27

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:50

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:18

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

00:32

system.security.resources.dll

2.0.50727.5420

16,896

13-Nov-2010

00:51

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:33

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

02:03

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:35

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

00:55

system.security.resources.dll

2.0.50727.5420

32,768

12-Nov-2010

23:51

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

02:37

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

02:09

system.security.resources.dll

2.0.50727.5420

16,384

13-Nov-2010

00:33

system.security.resources.dll

2.0.50727.5420

16,384

13-Nov-2010

02:33

system.security.dll

2.0.50727.5469

262,144

13-Feb-2013

06:04

LDR Service Branch

File name

File version

File size

Date

Time

system.security.dll

2.0.50727.7018

262,144

14-Feb-2013

00:37

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:08

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:09

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:04

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:08

system.security.resources.dll

2.0.50727.5420

32,768

20-Dec-2012

12:07

system.security.resources.dll

2.0.50727.5420

28,672

19-Dec-2012

08:24

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:04

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:08

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:07

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:06

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:08

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:04

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:08

system.security.resources.dll

2.0.50727.5420

16,896

20-Dec-2012

12:07

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:08

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:09

system.security.resources.dll

2.0.50727.5420

28,672

19-Dec-2012

08:24

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:09

system.security.resources.dll

2.0.50727.5420

32,768

20-Dec-2012

12:08

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:06

system.security.resources.dll

2.0.50727.5420

28,672

20-Dec-2012

12:09

system.security.resources.dll

2.0.50727.5420

16,384

20-Dec-2012

12:08

system.security.resources.dll

2.0.50727.5420

16,384

20-Dec-2012

12:05

system.security.dll

2.0.50727.7018

262,144

14-Feb-2013

00:38


GDR Service Branch

File name

File version

File size

Date

Time

system.security.dll

2.0.50727.5469

262,144

13-Feb-2013

06:01

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:25

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

00:00

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:23

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

00:38

system.security.resources.dll

2.0.50727.5420

16,384

13-Nov-2010

00:41

system.security.resources.dll

2.0.50727.5420

16,384

13-Nov-2010

02:35

system.security.dll

2.0.50727.5469

262,144

13-Feb-2013

06:04

LDR Service Branch

File name

File version

File size

Date

Time

system.security.dll

2.0.50727.7018

262,144

14-Feb-2013

00:36

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:53

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

00:22

system.security.resources.dll

2.0.50727.5420

28,672

12-Nov-2010

23:52

system.security.resources.dll

2.0.50727.5420

28,672

13-Nov-2010

01:08

system.security.resources.dll

2.0.50727.5420

16,384

13-Nov-2010

01:08

system.security.resources.dll

2.0.50727.5420

16,384

13-Nov-2010

02:58

system.security.dll

2.0.50727.7018

262,144

14-Feb-2013

00:38



Applies toThis article applies to the following:

  • Microsoft .NET Framework 3.5.1 when used with:

    • Windows 7 Service Pack 1

    • Windows Server 2008 R2 Service Pack 1

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