Summary
This security update resolves a vulnerability in the TS WebProxy Windows component that 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:
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Install programs
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View, change, or delete data
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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:
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Home users:
https://www.microsoft.com/security/pc-security/updates.aspx Skip the details: Download the updates for your home computer or laptop from the Microsoft Update website now:
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IT professionals:
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 Â
Important
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All updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive updates in the future.
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If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.
More Information
Known issues and additional information about this security update
The following articles contain additional information about this security update as it relates to individual product versions. The articles may contain known issue information. If this is the case, the known issue is listed under each article link.
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3019978 MS15-004: Description of the security update for Windows: January 13, 2015
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3020387 MS15-004: Description of the security update for Windows 7 and Windows Server 2008 R2: January 13, 2015
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3020388 MS15-004: Description of the security update for Windows 7 and Windows Server 2008 R2: January 13, 2015
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3023299 MS15-004: Description of the security update for Windows Vista: January 13, 2015
Windows Vista (all editions)Reference TableThe following table contains the security update information for this software.
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Security update file names |
For all supported 32-bit editions of Windows Vista:Windows6.0-KB3023299-x86.msu |
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For all supported x64-based editions of Windows Vista:Windows6.0-KB3023299-x64.msu |
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Installation switches |
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Restart requirement |
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 appears that advises you to restart. |
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Removal information |
WUSA.exe does not support uninstall of updates. To uninstall an update installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates and select from the list of updates. |
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File information |
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Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows 7 (all editions)Reference TableThe following table contains the security update information for this software.
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Security update file name |
For all supported 32-bit editions of Windows 7:Windows6.1-KB3019978-x86.msuWindows6.1-KB3020387-x86.msuWindows6.1-KB3020388-x86.msu |
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For all supported x64-based editions of Windows 7:Windows6.1-KB3019978-x64.msuWindows6.1-KB3020387-x64.msuWindows6.1-KB3020388-x64.msu |
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Installation switches |
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Restart requirement |
This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. |
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Removal information |
To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates and select from the list of updates. |
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File information |
See Microsoft Knowledge Base Article 3019978See Microsoft Knowledge Base Article 3020387See Microsoft Knowledge Base Article 3020388 |
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Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows Server 2008 R2 (all editions)Reference TableThe following table contains the security update information for this software.
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Security update file name |
For all supported x64-based editions of Windows Server 2008 R2:Windows6.1-KB3019978-x64.msuWindows6.1-KB3020387-x64.msuWindows6.1-KB3020388-x64.msu |
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For all supported Itanium-based editions of Windows Server 2008 R2:Windows6.1-KB3019978-ia64.msu |
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Installation switches |
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Restart requirement |
This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. |
|
Removal information |
To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates and select from the list of updates. |
|
File information |
See Microsoft Knowledge Base Article 3019978See Microsoft Knowledge Base Article 3020387See Microsoft Knowledge Base Article 3020388 |
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Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows 8 and Windows 8.1 (all editions)Reference TableThe following table contains the security update information for this software.
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Security update file name |
For all supported 32-bit editions of Windows 8:Windows8-RT-KB3019978-x86.msu |
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For all supported x64-based editions of Windows 8:Windows8-RT-KB3019978-x64.msu |
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For all supported 32-bit editions of Windows 8.1:Windows8.1-KB3019978-x86.msu |
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For all supported x64-based editions of Windows 8.1:Windows8.1-KB3019978-x64.msu |
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Installation switches |
|
|
Restart requirement |
This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. |
|
Removal information |
To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates. |
|
File information |
|
|
Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows Server 2012 and Windows Server 2012 R2 (all editions)Reference TableThe following table contains the security update information for this software.
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Security update file name |
For all supported editions of Windows Server 2012:Windows8-RT-KB3019978-x64.msu |
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For all supported editions of Windows Server 2012 R2:Windows8.1-KB3019978-x64.msu |
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|
Installation switches |
|
|
Restart requirement |
This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. |
|
Removal information |
To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates. |
|
File information |
|
|
Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows RT and Windows RT 8.1 (all editions)Reference TableThe following table contains the security update information for this software.
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Deployment |
These updates are available via Windows Update only. |
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Restart Requirement |
Yes, you must restart your system after you apply this security update. |
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Removal Information |
Click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates. |
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File Information |
File information
|
File name |
SHA1 hash |
SHA256 hash |
|---|---|---|
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Windows6.0-KB3023299-x86.msu |
46B2E62E8137750D0EC6418E47D7ADDB48ABF384 |
47B91ED7D6C33C24F21431650515159E06FF0B780590C3426E2DC8AD3198A674 |
|
Windows6.1-KB3019978-ia64.msu |
2D018FA94806D376F78CD52DF3D6CD6E88E5E6D8 |
193C6DB40C06F6A807E990B6EEBE92CBF333967737C33A4B6D24CA961EB663E2 |
|
Windows6.1-KB3019978-x86.msu |
B6845AFC1C86A99E8D663036215DF67EADD83EC1 |
AA0A7F3F79395377CF4CCB415FD50663AE6C3BE50968C9767F3290FED8097562 |
|
Windows6.1-KB3020387-x86.msu |
294999CD4AB3D07F282E8881C1D9FFC55E07B908 |
F1A1882487CB70884236DDC086A5BCA2887729F53377B37E19E160380239902F |
|
Windows6.1-KB3020388-x86.msu |
837E0478BCE5D45A7E483AE2AB65056C74A7940D |
EB939C00A46AB37B2A1C9CD917801BFC92D22ECC205F2DA3FE8907E23D62F8DA |
|
Windows8.1-KB3019978-x86.msu |
071C80470CDBB687E43EEB809B097EA7DAF3E40B |
A4C87C733343A606FE872A91355A90AACD06D2D08295AA08655FD24301D51900 |
|
Windows8-RT-KB3019978-x86.msu |
A31EC4D9B6170858374D8DF3FCF1AC7C7D86086D |
C0E1CBBEF04D72DEC273F9D2382281DFD34067C066AC1910C9915B3B0719399E |
