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MS15-050: Vulnerability in Service Control Manager could allow elevation of privilege: May 12, 2015

View products that this article applies to.

Summary

This security update resolves a vulnerability in Windows Service Control Manager (SCM). This vulnerability is caused when SCM incorrectly verifies impersonation levels. The vulnerability could allow elevation of privilege if an attacker can first log on to the system and then run a specially crafted application that is designed to increase privileges.

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Introduction

Microsoft has released security bulletin MS15-050. To learn more about this security bulletin:

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:
https://update.microsoft.com/microsoftupdate/
IT professionals:
https://technet.microsoft.com/library/security/MS15-050

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

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More Information

Security update deployment information

Windows Vista (all editions)

Reference table

The following table contains the security update information for this software.

Security update file names	For all supported 32-bit editions of Windows Vista: Windows6.0-KB3055642-x86.msu
	For all supported x64-based editions of Windows Vista: Windows6.0-KB3055642-x64.msu
Installation switches	See Microsoft Knowledge Base Article 934307
Restart requirement	Yes, you must restart your system after you apply this security update.
Removal information	WUSA.exe does not support uninstall of updates. To uninstall an update that is installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates, and then select from the list of updates.
File information	See the file information section.
Registry key verification	Note A registry key does not exist to validate the presence of this update.

Windows Server 2008 (all editions)

Reference table

The following table contains the security update information for this software.

Security update file names	For all supported 32-bit editions of Windows Server 2008: Windows6.0-KB3055642-x86.msu
	For all supported x64-based editions of Windows Server 2008: Windows6.0-KB3055642-x64.msu
	For all supported Itanium-based editions of Windows Server 2008: Windows6.0-KB3055642-ia64.msu
Installation switches	See Microsoft Knowledge Base Article 934307
Restart requirement	Yes, you must restart your system after you apply this security update.
Removal information	WUSA.exe does not support uninstall of updates. To uninstall an update that is installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates, and then select from the list of updates.
File information	See the file information section.
Registry key verification	Note A registry key does not exist to validate the presence of this update.

Windows 7 (all editions)

Reference Table

The following table contains the security update information for this software.

Security update file name	For all supported 32-bit editions of Windows 7: Windows6.1-KB3055642-x86.msu
	For all supported x64-based editions of Windows 7: Windows6.1-KB3055642-x64.msu
Installation switches	See Microsoft Knowledge Base Article 934307
Restart requirement	Yes, you must restart your system after you apply this security update.
Removal information	To uninstall an update that is installed by WUSA, use the setup switch. Or, click Control Panel, and then click System and Security. Under Windows Update, click View installed updates, and then select from the list of updates.
File information	See the file information section.
Registry key verification	Note A registry key does not exist to validate the presence of this update.

Windows Server 2008 R2 (all editions)

Reference Table

The following table contains the security update information for this software.

Security update file name	For all supported x64-based editions of Windows Server 2008 R2: Windows6.1-KB3055642-x64.msu
	For all supported Itanium-based editions of Windows Server 2008 R2: Windows6.1-KB3055642-ia64.msu
Installation switches	See Microsoft Knowledge Base Article 934307
Restart requirement	Yes, you must restart your system after you apply this security update.
Removal information	To uninstall an update that is installed by WUSA, use the setup switch. Or, click Control Panel, and then click System and Security. Under Windows Update, click View installed updates, and then select from the list of updates.
File information	See the file information section.
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 Table

The following table contains the security update information for this software.

Security update file name	For all supported 32-bit editions of Windows 8: Windows8-RT-KB3055642-x86.msu
	For all supported x64-based editions of Windows 8: Windows8-RT-KB3055642-x64.msu
	For all supported 32-bit editions of Windows 8.1: Windows8.1-KB3055642-x86.msu
	For all supported x64-based editions of Windows 8.1: Windows8.1-KB3055642-x64.msu
Installation switches	See Microsoft Knowledge Base Article 934307
Restart requirement	Yes, you must restart your system after you apply this security update.
Removal information	To uninstall an update that is installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, click System and Security, and then click Windows Update. Under See also, click Installed updates, and then select from the list of updates.
File information	See the file information section.
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 Table

The following table contains the security update information for this software.

Security update file name	For all supported editions of Windows Server 2012: Windows8-RT-KB3055642-x64.msu
	For all supported editions of Windows Server 2012 R2: Windows8.1-KB3055642-x64.msu
Installation switches	See Microsoft Knowledge Base Article 934307
Restart requirement	Yes, you must restart your system after you apply this security update.
Removal information	To uninstall an update that is installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, click System and Security, and then click Windows Update. Under See also, click Installed updates, and then select from the list of updates.
File information	See the file information section.
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 Table

The following table contains the security update information for this software.

Deployment	These updates are available through Windows Update only.
Restart Requirement	Yes, you must restart your system after you apply this security update.
Removal Information	Click Control Panel, click System and Security, and then click Windows Update. Under See also, click Installed updates, and then select from the list of updates.
File Information	See the file information section.

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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 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
Services.exe	6.0.6002.19369	279,552	10-Apr-2015	23:22	x86
Services.mof	Not Applicable	2,866	18-Sep-2006	21:46	Not Applicable
Services.exe	6.0.6002.23677	280,576	10-Apr-2015	23:18	x86
Services.mof	Not Applicable	2,866	07-May-2014	23:55	Not Applicable

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

File name	File version	File size	Date	Time	Platform
Services.exe	6.0.6002.19369	384,512	10-Apr-2015	23:33	x64
Services.mof	Not Applicable	2,866	18-Sep-2006	21:44	Not Applicable
Services.exe	6.0.6002.23677	385,024	10-Apr-2015	23:44	x64
Services.mof	Not Applicable	2,866	07-May-2014	23:55	Not Applicable
Services.exe	6.0.6002.19369	279,552	10-Apr-2015	23:22	x86
Services.mof	Not Applicable	2,866	18-Sep-2006	21:46	Not Applicable
Services.exe	6.0.6002.23677	280,576	10-Apr-2015	23:18	x86
Services.mof	Not Applicable	2,866	07-May-2014	23:55	Not Applicable

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

File name	File version	File size	Date	Time	Platform
Services.exe	6.0.6002.19369	744,448	10-Apr-2015	23:23	IA-64
Services.mof	Not Applicable	2,866	03-Jan-2008	19:17	Not Applicable
Services.exe	6.0.6002.23677	746,496	10-Apr-2015	23:22	IA-64
Services.mof	Not Applicable	2,866	07-May-2014	23:54	Not Applicable
Services.exe	6.0.6002.19369	279,552	10-Apr-2015	23:22	x86
Services.mof	Not Applicable	2,866	18-Sep-2006	21:46	Not Applicable
Services.exe	6.0.6002.23677	280,576	10-Apr-2015	23:18	x86
Services.mof	Not Applicable	2,866	07-May-2014	23:55	Not Applicable

Windows 7 and Windows Server 2008 R2 file information

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 and Windows Server 2008 R2 SP1 GDR
6.1.7601.22xxx Windows 7 and Windows Server 2008 R2 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
Services.exe	6.1.7601.18829	259,072	13-Apr-2015	03:19	x86
Services.mof	Not Applicable	2,866	04-Jul-2013	12:14	Not Applicable
Services.ptxml	Not Applicable	1,061	12-Apr-2015	22:32	Not Applicable
Services.exe	6.1.7601.23033	259,072	11-Apr-2015	03:53	x86
Services.mof	Not Applicable	2,866	09-Jul-2013	06:07	Not Applicable
Services.ptxml	Not Applicable	1,061	10-Apr-2015	23:15	Not Applicable

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

File name	File version	File size	Date	Time	Platform
Services.exe	6.1.7601.18829	328,704	13-Apr-2015	03:28	x64
Services.mof	Not Applicable	2,866	04-Jul-2013	12:14	Not Applicable
Services.ptxml	Not Applicable	1,061	12-Apr-2015	22:32	Not Applicable
Services.exe	6.1.7601.23033	328,704	11-Apr-2015	04:31	x64
Services.mof	Not Applicable	2,866	09-Jul-2013	06:15	Not Applicable
Services.ptxml	Not Applicable	1,061	10-Apr-2015	23:28	Not Applicable

For all supported IA-64-based versions of Windows Server 2008 R2

File name	File version	File size	Date	Time	Platform
Services.exe	6.1.7601.18829	683,520	13-Apr-2015	02:21	IA-64
Services.mof	Not Applicable	2,866	04-Jul-2013	12:22	Not Applicable
Services.ptxml	Not Applicable	1,061	12-Apr-2015	22:29	Not Applicable
Services.exe	6.1.7601.23033	683,520	11-Apr-2015	03:08	IA-64
Services.mof	Not Applicable	2,866	09-Jul-2013	06:10	Not Applicable
Services.ptxml	Not Applicable	1,061	10-Apr-2015	23:13	Not Applicable

Windows 8 and Windows Server 2012 file information

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
6.2.920 0.16 xxx Windows 8 and Windows Server 2012 RTM GDR
6.2.920 0.20 xxx Windows 8 and Windows Server 2012 RTM 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 8

File name	File version	File size	Date	Time	Platform
Services.exe	6.2.9200.17343	333,312	13-Apr-2015	04:06	x86
Services.exe	6.2.9200.21456	332,288	12-Apr-2015	22:34	x86

For all supported x64-based versions of Windows 8 and Windows Server 2012

File name	File version	File size	Date	Time	Platform
Services.exe	6.2.9200.17343	417,280	13-Apr-2015	05:32	x64
Services.exe	6.2.9200.21442	411,136	12-Apr-2015	22:31	x64

Windows 8.1 and Windows Server 2012 R2 file information

For all supported x86-based versions of Windows 8.1

File name	File version	File size	Date	Time	Platform
Services.exe	6.3.9600.17793	333,624	08-Apr-2015	22:59	x86

For all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2

File name	File version	File size	Date	Time	Platform
Services.exe	6.3.9600.17793	410,128	08-Apr-2015	22:55	x64

File hash information

File name	SHA1 hash	SHA256 hash
Windows6.0-KB3055642-ia64.msu	A9D0AEEFC75C5925DBE16B9D14754BFD220FEE0A	1A36443CB5B5D1D6517D2CA79FE375A42D1A4397E30F7465A11684D389258283
Windows6.0-KB3055642-x64.msu	05FBCC383DFE1E46ED7EDF23A9E9B775EE5242AB	AE965FC3BF5CF2EEEB754768E1B61BA05764403644436ECC1B32B66E3CECBDA2
Windows6.0-KB3055642-x86.msu	6F6C0687C22FBF63C90EAB8D84F80F726D983C43	85DD6C42FEDA9F2F56F79BC5A4089B4329B3866F177D7229472B58942A5F6B42
Windows6.1-KB3055642-ia64.msu	AE806D548170FAC249B397C80933883A9F19B853	C5F6CAD27C0664349A0BA62FEC0BD55BDCF5CAACEDA23EF862B83B2CF996B8C8
Windows6.1-KB3055642-x64.msu	CC13DB5A18E3531C854E85263E66055CDD081678	3632699001A0360350881035AD07AFA96E7E958C41C13924060950D37C1576C2
Windows6.1-KB3055642-x86.msu	2F1AC561188E1AF40796273CE672DE6C73259202	F4B2048C187D765153AD77F3F42CA6279BA8F83EBC89E50980F3423C8E47E866
Windows8.1-KB3055642-x64.msu	DA4C9859885BC413462C7B73141CF42AAC807238	221F9AA57C2347C3CDF4AE26E58177D199201DC13D47A53E70BDF39443376B62
Windows8.1-KB3055642-x86.msu	B448FC6FBD8B9BA0951DEDABF00DCD523163E8A4	9C6D430199A79B41AEE2D1B57C3DDB0EEE585F0E3523CFBC741741C819D2751B
Windows8-RT-KB3055642-x64.msu	B1ADE85117948215F943F4F2B15C3399BF0837D7	EDA655683CA4139CA05FAF6C99AA39A6CBEBA9475C2A34A6CDCE437D64F35692
Windows8-RT-KB3055642-x86.msu	4AC05C6692ADD3B39082CF938BBB8FC52CBD7637	DD5E9386B1A700EA4ADAB8994C55EB479507E04AAE97B2006E42E752FB6AB72A

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Applies to:

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Keywords: kb, atdownload, kbbug, kbexpertiseinter, kbfix, kblangall, kbmustloc, kbsecbulletin, kbsecreview, kbsecurity, kbsecvulnerability, kbsurveynew

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Article Info

Article ID	:	3055642
Revision	:	1
Created on	:	1/7/2017
Published on	:	5/12/2015
Exists online	:	False
Views	:	432