MS15-053: Description of the security update for VBScript and JScript 5.7: May 12, 2015

Applies To
Windows Server 2008 Service Pack 2 Windows Server 2008 Datacenter Windows Server 2008 Enterprise Windows Server 2008 Standard Windows Server 2008 Web Edition Windows Server 2008 Foundation Windows Server 2008 for Itanium-Based Systems Windows Vista Service Pack 2 Windows Vista Ultimate Windows Vista Enterprise Windows Vista Business Windows Vista Home Premium Windows Vista Home Basic Windows Vista Starter Microsoft Windows Server 2003 Service Pack 2

Summary

This security update resolves address space layout randomization (ASLR) security feature bypasses in the JScript and VBScript scripting engines in Microsoft Windows. An attacker could use one of these ASLR bypasses together with another vulnerability, such as a remote code execution vulnerability, to more reliably run arbitrary code on a target system. 

The update addresses the ASLR bypasses by helping to make sure that affected versions of JScript and VBScript correctly implement the ASLR security feature.

Introduction

Microsoft has released security bulletin MS15-053. 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 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

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

Windows Server 2003 file information
  • The files that apply to a specific milestone (SPn) and service branch (QFE, GDR) are noted in the "SP requirement" and "Service branch" columns.
  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. QFE service branches contain hotfixes in addition to widely released fixes.
  • In addition to the files that are listed in these tables, this software update also installs an associated security catalog file (KBnumber.cat) that is signed with a Microsoft digital signature.

For all supported x64-based versions of Windows Server 2003

File name File version File size Date Time Platform SP requirement Service branch
Jscript.dll 5.7.6002.23659 755,200 01-Apr-2015 01:00 x64 SP2 SP2QFE
Vbscript.dll 5.7.6002.23659 603,136 01-Apr-2015 01:00 x64 SP2 SP2QFE
Wjscript.dll 5.7.6002.23659 512,000 01-Apr-2015 01:00 x86 SP2 SP2QFE\WOW
Wvbscript.dll 5.7.6002.23659 434,176 01-Apr-2015 01:00 x86 SP2 SP2QFE\WOW

For all supported x86-based versions of Windows Server 2003

File name File version File size Date Time Platform SP requirement Service branch
Jscript.dll 5.7.6002.23659 512,000 01-Apr-2015 00:52 x86 SP2 SP2QFE
Vbscript.dll 5.7.6002.23659 434,176 01-Apr-2015 00:52 x86 SP2 SP2QFE

For all supported IA-64-based versions of Windows Server 2003

File name File version File size Date Time Platform SP requirement Service branch
Jscript.dll 5.7.6002.23659 1,378,304 01-Apr-2015 00:58 IA-64 SP2 SP2QFE
Vbscript.dll 5.7.6002.23659 1,155,072 01-Apr-2015 00:58 IA-64 SP2 SP2QFE
Wjscript.dll 5.7.6002.23659 512,000 01-Apr-2015 00:58 x86 SP2 SP2QFE\WOW
Wvbscript.dll 5.7.6002.23659 434,176 01-Apr-2015 00:58 x86 SP2 SP2QFE\WOW

      

Windows Vista and Windows Server 2008 file information

  • The files that apply to a specific product, milestone (SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version Product Milestone Service branch
    6.0.6002.18xxx Windows Vista SP2 and Windows Server 2008 SP2 SP2 GDR
    6.0.6002.23xxx Windows Vista SP2 and Windows Server 2008 SP2 SP2 LDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

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

For all supported x86-based versions of Windows Vista and Windows Server 2008

File name File version File size Date Time Platform
Jscript.dll 5.7.6002.19351 512,000 30-Mar-2015 01:00 x86
Jscript.dll 5.7.6002.23659 512,000 30-Mar-2015 00:30 x86
Vbscript.dll 5.7.6002.19351 430,080 30-Mar-2015 01:00 x86
Vbscript.dll 5.7.6002.23659 434,176 30-Mar-2015 00:31 x86

For all supported x64-based versions of Windows Vista and Windows Server 2008

File name File version File size Date Time Platform
Jscript.dll 5.7.6002.19351 754,688 30-Mar-2015 00:39 x64
Jscript.dll 5.7.6002.23659 755,200 30-Mar-2015 00:31 x64
Vbscript.dll 5.7.6002.19351 603,648 30-Mar-2015 00:40 x64
Vbscript.dll 5.7.6002.23659 603,136 30-Mar-2015 00:32 x64
Jscript.dll 5.7.6002.19351 512,000 30-Mar-2015 01:00 x86
Jscript.dll 5.7.6002.23659 512,000 30-Mar-2015 00:30 x86
Vbscript.dll 5.7.6002.19351 430,080 30-Mar-2015 01:00 x86
Vbscript.dll 5.7.6002.23659 434,176 30-Mar-2015 00:31 x86

For all supported IA-64-based versions of Windows Server 2008

File name File version File size Date Time Platform
Jscript.dll 5.7.6002.19351 1,378,304 30-Mar-2015 00:20 IA-64
Jscript.dll 5.7.6002.23659 1,378,304 30-Mar-2015 00:01 IA-64
Vbscript.dll 5.7.6002.19351 1,153,536 30-Mar-2015 00:21 IA-64
Vbscript.dll 5.7.6002.23659 1,155,072 30-Mar-2015 00:02 IA-64
Jscript.dll 5.7.6002.19351 512,000 30-Mar-2015 01:00 x86
Jscript.dll 5.7.6002.23659 512,000 30-Mar-2015 00:30 x86
Vbscript.dll 5.7.6002.19351 430,080 30-Mar-2015 01:00 x86
Vbscript.dll 5.7.6002.23659 434,176 30-Mar-2015 00:31 x86