Summary

This article describes the cumulative security update for JScript9.dll in Internet Explorer that is dated February 10, 2015. This security update resolves an issue in the Jscript9.dll component that leads to an Address Space Layout Randomization (ASLR) security feature bypass. For more information about this update, see Microsoft Knowledge Base article 3034682.

Introduction

Microsoft has released security bulletin MS15-009. To learn more about 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 Support and Troubleshooting

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

Local support according to your country:
International Support

More Information

Restart information

You may have to restart the computer after you install this security update.

In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message is displayed that advises you to restart the computer.

To help reduce the possibility that a restart will be required, stop all affected services and close all applications that may use the affected files before you install this security update.

For more information, see the following Microsoft Knowledge Base article:

887012 Why you may be prompted to restart your computer after you install a security update on a Windows-based computer for more information.

The English (United States) version of this security update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista and Windows Server 2008 file information

Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

Internet Explorer 9Internet Explorer 9 on all supported x86-based versions of Windows Vista

File name

File version

File size

Date

Time

Platform

Jscript.dll

5.8.7601.17125

717,824

23-Jan-2015

02:51

x86

Jscript9.dll

9.0.8112.16620

1,810,944

23-Jan-2015

03:00

x86

Jscript.dll

5.8.7601.20731

717,824

23-Jan-2015

02:57

x86

Jscript9.dll

9.0.8112.20730

1,810,944

23-Jan-2015

03:06

x86

Internet Explorer 9 on all supported x64-based versions of Windows Vista and Windows Server 2008

File name

File version

File size

Date

Time

Platform

Jscript.dll

5.8.7601.17125

816,640

23-Jan-2015

03:59

x64

Jscript9.dll

9.0.8112.16620

2,339,840

23-Jan-2015

04:07

x64

Jscript.dll

5.8.7601.20731

816,640

23-Jan-2015

04:11

x64

Jscript9.dll

9.0.8112.20730

2,339,328

23-Jan-2015

04:19

x64

Jscript.dll

5.8.7601.17125

717,824

23-Jan-2015

02:51

x86

Jscript9.dll

9.0.8112.16620

1,810,944

23-Jan-2015

03:00

x86

Jscript.dll

5.8.7601.20731

717,824

23-Jan-2015

02:57

x86

Jscript9.dll

9.0.8112.20730

1,810,944

23-Jan-2015

03:06

x86

Windows 7 and Windows Server 2008 R2 file information

Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

Internet Explorer 9Internet Explorer 9 on all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Jscript.dll

5.8.7601.17125

717,824

23-Jan-2015

02:51

x86

Jscript9.dll

9.0.8112.16620

1,810,944

23-Jan-2015

03:00

x86

Jscript.dll

5.8.7601.20731

717,824

23-Jan-2015

02:57

x86

Jscript9.dll

9.0.8112.20730

1,810,944

23-Jan-2015

03:06

x86

Internet Explorer 9 on all supported x64-based versions of Windows 7 and Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Jscript.dll

5.8.7601.17125

816,640

23-Jan-2015

03:59

x64

Jscript9.dll

9.0.8112.16620

2,339,840

23-Jan-2015

04:07

x64

Jscript.dll

5.8.7601.20731

816,640

23-Jan-2015

04:11

x64

Jscript9.dll

9.0.8112.20730

2,339,328

23-Jan-2015

04:19

x64

Jscript.dll

5.8.7601.17125

717,824

23-Jan-2015

02:51

x86

Jscript9.dll

9.0.8112.16620

1,810,944

23-Jan-2015

03:00

x86

Jscript.dll

5.8.7601.20731

717,824

23-Jan-2015

02:57

x86

Jscript9.dll

9.0.8112.20730

1,810,944

23-Jan-2015

03:06

x86

Internet Explorer 10 Internet Explorer 10 on all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Jscript9.dll

10.0.9200.17241

2,864,640

23-Jan-2015

04:27

x86

Jscript9.dll

10.0.9200.21359

2,868,224

23-Jan-2015

04:26

x86

Internet Explorer 10 on all supported x64-based versions of Windows 7 and Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Jscript9.dll

10.0.9200.17241

3,959,296

23-Jan-2015

05:50

x64

Jscript9.dll

10.0.9200.21359

3,969,024

23-Jan-2015

04:27

x64

Jscript9.dll

10.0.9200.17241

2,864,640

23-Jan-2015

04:27

x86

Jscript9.dll

10.0.9200.21359

2,868,224

23-Jan-2015

04:26

x86

Internet Explorer 11 Internet Explorer 11 on all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Jscript9.dll.mui

11.0.9600.17640

29,696

24-Jan-2015

02:14

Not Applicable

Jscript9.dll

11.0.9600.17640

4,300,800

23-Jan-2015

03:17

x86

Jscript9diag.dll

11.0.9600.17640

620,032

23-Jan-2015

03:43

x86

Internet Explorer 11 on all supported x64-based versions of Windows 7 and Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Jscript9.dll.mui

11.0.9600.17640

29,696

24-Jan-2015

02:46

Not Applicable

Jscript9.dll

11.0.9600.17640

6,041,600

23-Jan-2015

04:41

x64

Jscript9diag.dll

11.0.9600.17640

814,080

23-Jan-2015

04:42

x64

Jscript9.dll

11.0.9600.17640

4,300,800

23-Jan-2015

03:17

x86

Jscript9diag.dll

11.0.9600.17640

620,032

23-Jan-2015

03:43

x86

Jscript9.dll.mui

11.0.9600.17640

29,696

24-Jan-2015

02:14

Not Applicable

Windows 8 and Windows Server 2012 file information

Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

Internet Explorer 10 Internet Explorer 10 on all supported x86-based versions of Windows 8

File name

File version

File size

Date

Time

Platform

Jscript9.dll

10.0.9200.17241

2,864,640

23-Jan-2015

04:27

x86

Jscript9.dll

10.0.9200.21359

2,868,224

23-Jan-2015

04:26

x86

Internet Explorer 10 on all supported x64-based versions of Windows 8 and Windows Server 2012

File name

File version

File size

Date

Time

Platform

Jscript9.dll

10.0.9200.17241

3,959,296

23-Jan-2015

05:50

x64

Jscript9.dll

10.0.9200.21359

3,969,024

23-Jan-2015

04:27

x64

Jscript9.dll

10.0.9200.17241

2,864,640

23-Jan-2015

04:27

x86

Jscript9.dll

10.0.9200.21359

2,868,224

23-Jan-2015

04:26

x86

Windows 8.1 and Windows Server 2012 R2 file information

Internet Explorer 11 Internet Explorer 11 on all supported x86-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Jscript9.dll

11.0.9600.17640

4,300,800

23-Jan-2015

03:17

x86

Jscript9diag.dll

11.0.9600.17416

620,032

31-Oct-2014

03:11

x86

Internet Explorer 11 on all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Jscript9.dll

11.0.9600.17640

6,041,600

23-Jan-2015

04:41

x64

Jscript9diag.dll

11.0.9600.17416

814,080

31-Oct-2014

04:50

x64

Jscript9.dll

11.0.9600.17640

4,300,800

23-Jan-2015

03:17

x86

Jscript9diag.dll

11.0.9600.17416

620,032

31-Oct-2014

03:11

x86

How to determine whether you are running a 32-bit or a 64-bit edition of Windows

If you are not sure which version of Windows that you are running or whether it is a 32-bit version or 64-bit version, open System Information (Msinfo32.exe), and review the value that is listed for System Type. To do this, follow these steps:

  1. Click Start, and then click Run, or click Start Search.

  2. Type msinfo32.exe, and then press Enter.

  3. In System Information, review the value for System Type.

    • For 32-bit editions of Windows, the System Type value is x86-based PC.

    • For 64-bit editions of Windows, the System Type value is x64-based PC.

For more information about how to determine whether you are running a 32-bit or 64-bit edition of Windows, click the following article number to view the article in the Microsoft Knowledge Base:

827218How to determine whether a computer is running a 32-bit version or a 64-bit version of the Windows operating system

Additional information about service branch

Security update 3034196 packages for Windows XP and for Windows Server 2003 include Internet Explorer hotfix files and general distribution release (GDR) files. If no existing Internet Explorer files are from the hotfix environment, security update 2936068 installs the GDR files.

Hotfixes are intended to correct only the problems that are described in the Microsoft Knowledge Base articles that are associated with the hotfixes. Apply hotfixes only to systems that are experiencing these specific problems.

These hotfixes may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains these hotfixes. For more information about how to install the hotfixes that are included in security update 2936068, click the following article number to view the article in the Microsoft Knowledge Base:

897225How to install hotfixes that are included in cumulative security updates for Internet Explorer
Note In addition to installing hotfix files, review the Microsoft Knowledge Base article that is associated with the specific hotfix that you have to install to determine the registry modification that is required to enable that specific hotfix.

For more information about how to determine whether your existing Internet Explorer files are from the hotfix or from the GDR environment, click the following article number to view the article in the Microsoft Knowledge Base:

824994Description of the contents of Windows XP Service Pack 2 and Windows Server 2003 software update packages

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