Summary

This security update resolves a privately reported vulnerability in the TS WebProxy component in Windows 7 and Windows Server 2008 R2 if the Remote Desktop Connection 8.1 client update is installed. The vulnerability could allow elevation of privilege if an attacker convinces a user to run a specially crafted application. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on by using administrative user rights, an attacker could then do the following:

  • Install programs

  • View, change, or delete data

  • Create new accounts that have full user rights

Customers whose accounts are configured to have fewer user rights on the system could be less affected than users who operate by using administrative user rights. 

Introduction

Microsoft has released security bulletin MS15-004. To learn more about this security bulletin:

How to obtain help and support for this security update

Help installing updates:Support for Microsoft UpdateSecurity solutions for IT professionals:TechNet Security Troubleshooting and SupportHelp protect your Windows-based computer from viruses and malware:Virus Solution and Security CenterLocal support according to your country:International Support

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.

  • The files that apply to a specific product, milestone (RTM, 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

    6.1.7601.18xxx

    Windows 7

    SP1

    GDR

    6.1.7601.22xxx

    Windows 7

    SP1

    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 7

File name

File version

File size

Date

Time

Platform

Tswbprxy.exe

6.3.9600.17553

74,240

11-Dec-2014

17:47

x86

Tswbprxy.exe

6.3.9600.17553

74,240

11-Dec-2014

17:47

x86

For all supported x64-based versions of Windows 7 and Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Tswbprxy.exe

6.3.9600.17553

87,040

11-Dec-2014

17:47

x64

Tswbprxy.exe

6.3.9600.17553

87,040

11-Dec-2014

17:50

x64

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