MS15-041: Description of the security update for the .NET Framework 3.5 on Windows 8.1 and Windows Server 2012 R2: April 14, 2015


View products that this article applies to.

Introduction

This update resolves a vulnerability in the Microsoft .NET Framework that could allow information disclosure if an attacker sends a specially crafted web request to an affected server that has custom error messages disabled. An attacker who successfully exploits the vulnerability would be able to view parts of a web configuration file that could expose sensitive information.

Summary

Microsoft has released security bulletin MS15-041. Learn more about how to obtain the fixes that are included in this security bulletin:

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 Windows-based computer 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 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 the following update:

2901125 MS14-009: Description of the security update for the .NET Framework 3.5 for Windows 8.1 and Windows Server 2012 R2: February 11, 2014


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 systemsGDR service branch

File name

File version

File size

Date

Time

system.web.mobile.resources.dll

2.0.50727.7905

40,960

06-Dec-2014

01:31

system.web.mobile.resources.dll

2.0.50727.7905

36,864

06-Dec-2014

01:29

system.web.mobile.resources.dll

2.0.50727.7905

81,920

06-Dec-2014

01:31

system.web.mobile.resources.dll

2.0.50727.7905

49,152

06-Dec-2014

01:27

system.web.mobile.resources.dll

2.0.50727.7905

77,824

06-Dec-2014

01:30

system.web.mobile.resources.dll

2.0.50727.7905

36,864

06-Dec-2014

01:28

system.web.mobile.resources.dll

2.0.50727.7905

81,920

06-Dec-2014

01:31

system.web.mobile.resources.dll

2.0.50727.7905

40,960

06-Dec-2014

01:31

system.web.mobile.resources.dll

2.0.50727.7905

77,824

06-Dec-2014

01:31

system.web.mobile.resources.dll

2.0.50727.7905

86,016

06-Dec-2014

01:31

system.web.mobile.resources.dll

2.0.50727.7905

81,920

06-Dec-2014

01:31

system.web.mobile.resources.dll

2.0.50727.7905

36,864

06-Dec-2014

01:30

system.web.mobile.resources.dll

2.0.50727.7905

40,960

06-Dec-2014

01:29

system.web.mobile.resources.dll

2.0.50727.7905

40,960

06-Dec-2014

01:29

system.web.mobile.resources.dll

2.0.50727.7905

40,960

06-Dec-2014

01:29

system.web.mobile.resources.dll

2.0.50727.7905

40,960

06-Dec-2014

01:29

system.web.mobile.resources.dll

2.0.50727.7905

45,056

06-Dec-2014

01:29

system.web.mobile.resources.dll

2.0.50727.7905

36,864

06-Dec-2014

01:29

system.web.mobile.resources.dll

2.0.50727.7905

36,864

06-Dec-2014

01:30

system.web.mobile.resources.dll

2.0.50727.7905

73,728

06-Dec-2014

01:31

system.web.mobile.resources.dll

2.0.50727.7905

73,728

06-Dec-2014

01:31

system.web.mobile.dll

2.0.50727.8015

835,584

07-Feb-2015

22:05

system.web.regularexpressions.dll

2.0.50727.8015

98,304

07-Feb-2015

22:05

system.web.resources.dll

2.0.50727.7905

679,936

06-Dec-2014

01:28

system.web.resources.dll

2.0.50727.7905

606,208

06-Dec-2014

01:31

system.web.resources.dll

2.0.50727.7905

593,920

06-Dec-2014

01:29

system.web.resources.dll

2.0.50727.7905

622,592

06-Dec-2014

01:31

system.web.resources.dll

2.0.50727.7905

815,104

06-Dec-2014

01:27

system.web.resources.dll

2.0.50727.7905

614,400

06-Dec-2014

01:30

system.web.resources.dll

2.0.50727.7905

585,728

06-Dec-2014

01:28

system.web.resources.dll

2.0.50727.7905

618,496

06-Dec-2014

01:31

system.web.resources.dll

2.0.50727.7905

647,168

06-Dec-2014

01:28

system.web.resources.dll

2.0.50727.7905

630,784

06-Dec-2014

01:31

system.web.resources.dll

2.0.50727.7905

610,304

06-Dec-2014

01:31

system.web.resources.dll

2.0.50727.7905

671,744

06-Dec-2014

01:31

system.web.resources.dll

2.0.50727.7905

622,592

06-Dec-2014

01:31

system.web.resources.dll

2.0.50727.7905

577,536

06-Dec-2014

01:30

system.web.resources.dll

2.0.50727.7905

626,688

06-Dec-2014

01:29

system.web.resources.dll

2.0.50727.7905

606,208

06-Dec-2014

01:29

system.web.resources.dll

2.0.50727.7905

602,112

06-Dec-2014

01:29

system.web.resources.dll

2.0.50727.7905

606,208

06-Dec-2014

01:29

system.web.resources.dll

2.0.50727.7905

753,664

06-Dec-2014

01:29

system.web.resources.dll

2.0.50727.7905

589,824

06-Dec-2014

01:29

system.web.resources.dll

2.0.50727.7905

598,016

06-Dec-2014

01:30

system.web.resources.dll

2.0.50727.7905

552,960

06-Dec-2014

01:31

system.web.resources.dll

2.0.50727.7905

557,056

06-Dec-2014

01:31

aspnet_wp.exe

2.0.50727.8015

31,376

07-Feb-2015

22:05

webengine.dll

2.0.50727.8015

437,392

07-Feb-2015

22:05

system.web.dll

2.0.50727.8015

5,287,936

07-Feb-2015

22:05

LDR service branch

File name

File version

File size

Date

Time

system.web.mobile.resources.dll

2.0.50727.7905

40,960

31-Dec-2014

23:14

system.web.mobile.resources.dll

2.0.50727.7905

36,864

31-Dec-2014

23:14

system.web.mobile.resources.dll

2.0.50727.7905

81,920

31-Dec-2014

23:14

system.web.mobile.resources.dll

2.0.50727.7905

49,152

31-Dec-2014

23:14

system.web.mobile.resources.dll

2.0.50727.7905

77,824

31-Dec-2014

23:15

system.web.mobile.resources.dll

2.0.50727.7905

36,864

03-Jan-2015

01:13

system.web.mobile.resources.dll

2.0.50727.7905

81,920

03-Jan-2015

01:15

system.web.mobile.resources.dll

2.0.50727.7905

40,960

03-Jan-2015

01:15

system.web.mobile.resources.dll

2.0.50727.7905

77,824

03-Jan-2015

01:14

system.web.mobile.resources.dll

2.0.50727.7905

86,016

03-Jan-2015

01:14

system.web.mobile.resources.dll

2.0.50727.7905

81,920

03-Jan-2015

01:14

system.web.mobile.resources.dll

2.0.50727.7905

36,864

03-Jan-2015

01:13

system.web.mobile.resources.dll

2.0.50727.7905

40,960

03-Jan-2015

01:14

system.web.mobile.resources.dll

2.0.50727.7905

40,960

31-Dec-2014

23:14

system.web.mobile.resources.dll

2.0.50727.7905

40,960

31-Dec-2014

23:17

system.web.mobile.resources.dll

2.0.50727.7905

40,960

31-Dec-2014

23:16

system.web.mobile.resources.dll

2.0.50727.7905

45,056

31-Dec-2014

23:16

system.web.mobile.resources.dll

2.0.50727.7905

36,864

31-Dec-2014

23:17

system.web.mobile.resources.dll

2.0.50727.7905

36,864

31-Dec-2014

23:14

system.web.mobile.resources.dll

2.0.50727.7905

73,728

31-Dec-2014

23:15

system.web.mobile.resources.dll

2.0.50727.7905

73,728

31-Dec-2014

23:15

system.web.mobile.dll

2.0.50727.8653

835,584

06-Feb-2015

23:07

system.web.regularexpressions.dll

2.0.50727.8653

98,304

06-Feb-2015

23:07

system.web.resources.dll

2.0.50727.7905

679,936

03-Jan-2015

01:11

system.web.resources.dll

2.0.50727.7905

606,208

31-Dec-2014

23:14

system.web.resources.dll

2.0.50727.7905

593,920

31-Dec-2014

23:14

system.web.resources.dll

2.0.50727.7905

622,592

31-Dec-2014

23:14

system.web.resources.dll

2.0.50727.7905

815,104

31-Dec-2014

23:14

system.web.resources.dll

2.0.50727.7905

614,400

31-Dec-2014

23:15

system.web.resources.dll

2.0.50727.7905

585,728

03-Jan-2015

01:13

system.web.resources.dll

2.0.50727.7905

618,496

03-Jan-2015

01:15

system.web.resources.dll

2.0.50727.7905

647,168

03-Jan-2015

01:11

system.web.resources.dll

2.0.50727.7905

630,784

03-Jan-2015

01:15

system.web.resources.dll

2.0.50727.7905

610,304

03-Jan-2015

01:14

system.web.resources.dll

2.0.50727.7905

671,744

03-Jan-2015

01:14

system.web.resources.dll

2.0.50727.7905

622,592

03-Jan-2015

01:14

system.web.resources.dll

2.0.50727.7905

577,536

03-Jan-2015

01:13

system.web.resources.dll

2.0.50727.7905

626,688

03-Jan-2015

01:14

system.web.resources.dll

2.0.50727.7905

606,208

31-Dec-2014

23:14

system.web.resources.dll

2.0.50727.7905

602,112

31-Dec-2014

23:17

system.web.resources.dll

2.0.50727.7905

606,208

31-Dec-2014

23:16

system.web.resources.dll

2.0.50727.7905

753,664

31-Dec-2014

23:16

system.web.resources.dll

2.0.50727.7905

589,824

31-Dec-2014

23:17

system.web.resources.dll

2.0.50727.7905

598,016

31-Dec-2014

23:14

system.web.resources.dll

2.0.50727.7905

552,960

31-Dec-2014

23:15

system.web.resources.dll

2.0.50727.7905

557,056

31-Dec-2014

23:15

aspnet_wp.exe

2.0.50727.8653

31,376

06-Feb-2015

23:07

webengine.dll

2.0.50727.8653

437,400

06-Feb-2015

23:07

system.web.dll

2.0.50727.8653

5,287,936

06-Feb-2015

23:07

For all supported x64-based versions of systemsGDR service branch

File name

File version

File size

Date

Time

aspnet_wp.exe

2.0.50727.8015

43,160

07-Feb-2015

22:05

system.web.mobile.dll

2.0.50727.8015

835,584

07-Feb-2015

22:05

system.web.regularexpressions.dll

2.0.50727.8015

98,304

07-Feb-2015

22:05

webengine.dll

2.0.50727.8015

746,640

07-Feb-2015

22:05

system.web.dll

2.0.50727.8015

5,296,128

07-Feb-2015

22:05

system.web.mobile.resources.dll

2.0.50727.7905

40,960

06-Dec-2014

01:31

system.web.mobile.resources.dll

2.0.50727.7905

36,864

06-Dec-2014

01:29

system.web.mobile.resources.dll

2.0.50727.7905

81,920

06-Dec-2014

01:31

system.web.mobile.resources.dll

2.0.50727.7905

49,152

06-Dec-2014

01:27

system.web.mobile.resources.dll

2.0.50727.7905

77,824

06-Dec-2014

01:30

system.web.mobile.resources.dll

2.0.50727.7905

36,864

06-Dec-2014

01:28

system.web.mobile.resources.dll

2.0.50727.7905

81,920

06-Dec-2014

01:32

system.web.mobile.resources.dll

2.0.50727.7905

40,960

06-Dec-2014

01:32

system.web.mobile.resources.dll

2.0.50727.7905

77,824

06-Dec-2014

01:32

system.web.mobile.resources.dll

2.0.50727.7905

86,016

06-Dec-2014

01:32

system.web.mobile.resources.dll

2.0.50727.7905

81,920

06-Dec-2014

01:32

system.web.mobile.resources.dll

2.0.50727.7905

36,864

06-Dec-2014

01:31

system.web.mobile.resources.dll

2.0.50727.7905

40,960

06-Dec-2014

01:28

system.web.mobile.resources.dll

2.0.50727.7905

40,960

06-Dec-2014

01:30

system.web.mobile.resources.dll

2.0.50727.7905

40,960

06-Dec-2014

01:30

system.web.mobile.resources.dll

2.0.50727.7905

40,960

06-Dec-2014

01:30

system.web.mobile.resources.dll

2.0.50727.7905

45,056

06-Dec-2014

01:30

system.web.mobile.resources.dll

2.0.50727.7905

36,864

06-Dec-2014

01:30

system.web.mobile.resources.dll

2.0.50727.7905

36,864

06-Dec-2014

01:30

system.web.mobile.resources.dll

2.0.50727.7905

73,728

06-Dec-2014

01:31

system.web.mobile.resources.dll

2.0.50727.7905

73,728

06-Dec-2014

01:31

system.web.mobile.dll

2.0.50727.8015

835,584

07-Feb-2015

22:05

system.web.regularexpressions.dll

2.0.50727.8015

98,304

07-Feb-2015

22:05

system.web.resources.dll

2.0.50727.7905

679,936

06-Dec-2014

01:28

system.web.resources.dll

2.0.50727.7905

606,208

06-Dec-2014

01:31

system.web.resources.dll

2.0.50727.7905

593,920

06-Dec-2014

01:29

system.web.resources.dll

2.0.50727.7905

622,592

06-Dec-2014

01:31

system.web.resources.dll

2.0.50727.7905

815,104

06-Dec-2014

01:27

system.web.resources.dll

2.0.50727.7905

614,400

06-Dec-2014

01:30

system.web.resources.dll

2.0.50727.7905

585,728

06-Dec-2014

01:28

system.web.resources.dll

2.0.50727.7905

618,496

06-Dec-2014

01:32

system.web.resources.dll

2.0.50727.7905

647,168

06-Dec-2014

01:28

system.web.resources.dll

2.0.50727.7905

630,784

06-Dec-2014

01:32

system.web.resources.dll

2.0.50727.7905

610,304

06-Dec-2014

01:32

system.web.resources.dll

2.0.50727.7905

671,744

06-Dec-2014

01:32

system.web.resources.dll

2.0.50727.7905

622,592

06-Dec-2014

01:32

system.web.resources.dll

2.0.50727.7905

577,536

06-Dec-2014

01:31

system.web.resources.dll

2.0.50727.7905

626,688

06-Dec-2014

01:28

system.web.resources.dll

2.0.50727.7905

606,208

06-Dec-2014

01:30

system.web.resources.dll

2.0.50727.7905

602,112

06-Dec-2014

01:30

system.web.resources.dll

2.0.50727.7905

606,208

06-Dec-2014

01:30

system.web.resources.dll

2.0.50727.7905

753,664

06-Dec-2014

01:30

system.web.resources.dll

2.0.50727.7905

589,824

06-Dec-2014

01:30

system.web.resources.dll

2.0.50727.7905

598,016

06-Dec-2014

01:30

system.web.resources.dll

2.0.50727.7905

552,960

06-Dec-2014

01:31

system.web.resources.dll

2.0.50727.7905

557,056

06-Dec-2014

01:31

aspnet_wp.exe

2.0.50727.8015

31,376

07-Feb-2015

22:05

webengine.dll

2.0.50727.8015

437,392

07-Feb-2015

22:05

system.web.dll

2.0.50727.8015

5,287,936

07-Feb-2015

22:05

LDR service branch

File name

File version

File size

Date

Time

aspnet_wp.exe

2.0.50727.8653

43,152

06-Feb-2015

23:09

system.web.mobile.dll

2.0.50727.8653

835,584

06-Feb-2015

23:09

system.web.regularexpressions.dll

2.0.50727.8653

98,304

06-Feb-2015

23:09

webengine.dll

2.0.50727.8653

746,640

06-Feb-2015

23:09

system.web.dll

2.0.50727.8653

5,296,128

06-Feb-2015

23:09

system.web.mobile.resources.dll

2.0.50727.7905

40,960

17-Dec-2014

23:08

system.web.mobile.resources.dll

2.0.50727.7905

36,864

17-Dec-2014

23:08

system.web.mobile.resources.dll

2.0.50727.7905

81,920

17-Dec-2014

23:08

system.web.mobile.resources.dll

2.0.50727.7905

49,152

17-Dec-2014

23:08

system.web.mobile.resources.dll

2.0.50727.7905

77,824

17-Dec-2014

23:08

system.web.mobile.resources.dll

2.0.50727.7905

36,864

12-Feb-2015

23:08

system.web.mobile.resources.dll

2.0.50727.7905

81,920

12-Feb-2015

23:09

system.web.mobile.resources.dll

2.0.50727.7905

40,960

12-Feb-2015

23:09

system.web.mobile.resources.dll

2.0.50727.7905

77,824

12-Feb-2015

23:10

system.web.mobile.resources.dll

2.0.50727.7905

86,016

12-Feb-2015

23:09

system.web.mobile.resources.dll

2.0.50727.7905

81,920

12-Feb-2015

23:10

system.web.mobile.resources.dll

2.0.50727.7905

36,864

12-Feb-2015

23:08

system.web.mobile.resources.dll

2.0.50727.7905

40,960

12-Feb-2015

23:09

system.web.mobile.resources.dll

2.0.50727.7905

40,960

16-Dec-2014

23:16

system.web.mobile.resources.dll

2.0.50727.7905

40,960

16-Dec-2014

23:15

system.web.mobile.resources.dll

2.0.50727.7905

40,960

16-Dec-2014

23:16

system.web.mobile.resources.dll

2.0.50727.7905

45,056

16-Dec-2014

23:15

system.web.mobile.resources.dll

2.0.50727.7905

36,864

16-Dec-2014

23:15

system.web.mobile.resources.dll

2.0.50727.7905

36,864

16-Dec-2014

23:15

system.web.mobile.resources.dll

2.0.50727.7905

73,728

17-Dec-2014

23:08

system.web.mobile.resources.dll

2.0.50727.7905

73,728

17-Dec-2014

23:08

system.web.mobile.dll

2.0.50727.8653

835,584

06-Feb-2015

23:07

system.web.regularexpressions.dll

2.0.50727.8653

98,304

06-Feb-2015

23:07

system.web.resources.dll

2.0.50727.7905

679,936

12-Feb-2015

23:08

system.web.resources.dll

2.0.50727.7905

606,208

17-Dec-2014

23:08

system.web.resources.dll

2.0.50727.7905

593,920

17-Dec-2014

23:08

system.web.resources.dll

2.0.50727.7905

622,592

17-Dec-2014

23:08

system.web.resources.dll

2.0.50727.7905

815,104

17-Dec-2014

23:08

system.web.resources.dll

2.0.50727.7905

614,400

17-Dec-2014

23:08

system.web.resources.dll

2.0.50727.7905

585,728

12-Feb-2015

23:08

system.web.resources.dll

2.0.50727.7905

618,496

12-Feb-2015

23:09

system.web.resources.dll

2.0.50727.7905

647,168

12-Feb-2015

23:07

system.web.resources.dll

2.0.50727.7905

630,784

12-Feb-2015

23:09

system.web.resources.dll

2.0.50727.7905

610,304

12-Feb-2015

23:10

system.web.resources.dll

2.0.50727.7905

671,744

12-Feb-2015

23:09

system.web.resources.dll

2.0.50727.7905

622,592

12-Feb-2015

23:10

system.web.resources.dll

2.0.50727.7905

577,536

12-Feb-2015

23:08

system.web.resources.dll

2.0.50727.7905

626,688

12-Feb-2015

23:09

system.web.resources.dll

2.0.50727.7905

606,208

16-Dec-2014

23:16

system.web.resources.dll

2.0.50727.7905

602,112

16-Dec-2014

23:15

system.web.resources.dll

2.0.50727.7905

606,208

16-Dec-2014

23:16

system.web.resources.dll

2.0.50727.7905

753,664

16-Dec-2014

23:15

system.web.resources.dll

2.0.50727.7905

589,824

16-Dec-2014

23:15

system.web.resources.dll

2.0.50727.7905

598,016

16-Dec-2014

23:15

system.web.resources.dll

2.0.50727.7905

552,960

17-Dec-2014

23:08

system.web.resources.dll

2.0.50727.7905

557,056

17-Dec-2014

23:08

aspnet_wp.exe

2.0.50727.8653

31,376

06-Feb-2015

23:07

webengine.dll

2.0.50727.8653

437,400

06-Feb-2015

23:07

system.web.dll

2.0.50727.8653

5,287,936

06-Feb-2015

23:07



Applies toThis article applies to the following:

  • Microsoft .NET Framework 3.5 when used with:

    • Windows Server 2012 R2

    • Windows 8.1

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Any additional feedback? (Optional)

Thank you for your feedback!

×