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ESB-2016.0623 - [Win] Microsoft Windows: Administrator compromise - Existing account

Date: 08 March 2016

Click here for printable version
Click here for PGP verifiable version
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             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0623
   Microsoft Security Bulletin: Security Update for Windows Kernel-Mode
            Drivers to Address Elevation of Privilege (3143145)
                               8 March 2016

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Administrator Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-0096 CVE-2016-0095 CVE-2016-0094
                   CVE-2016-0093  

Original Bulletin: 
   https://technet.microsoft.com/en-us/library/security/MS16-034

- --------------------------BEGIN INCLUDED TEXT--------------------

Microsoft Security Bulletin MS16-034: Security Update for Windows Kernel-Mode
Drivers to Address Elevation of Privilege (3143145)

Bulletin Number: MS16-034

Bulletin Title: Security Update for Windows Kernel-Mode Drivers to Address 
Elevation of Privilege

Severity: Important

KB Article: 3143145

Version: 1.0

Published Date: March 8, 2016

Executive Summary

This security update resolves vulnerabilities in Microsoft Windows. The 
vulnerabilities could allow elevation of privilege if an attacker logs on to 
the system and runs a specially crafted application.

This security update is rated Important for all supported editions of 
Microsoft Windows.

Affected Software

Windows Vista Service Pack 2 (3139852)

Windows Vista x64 Edition Service Pack 2 (3139852)

Windows Server 2008 for 32-bit Systems Service Pack 2 (3139852)

Windows Server 2008 for x64-based Systems Service Pack 2 (3139852)

Windows Server 2008 for Itanium-based Systems Service Pack 2 (3139852)

Windows 7 for 32-bit Systems Service Pack 1 (3139852)

Windows 7 for x64-based Systems Service Pack 1 (3139852)

Windows Server 2008 R2 for x64-based Systems Service Pack 1 (3139852)

Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 (3139852)

Windows 8.1 for 32-bit Systems (3139852)

Windows 8.1 for x64-based Systems (3139852)

Windows Server 2012 (3139852)

Windows Server 2012 R2 (3139852)

Windows RT 8.1[1] (3139852)

Windows 10 for 32-bit Systems[2] (3140745)

Windows 10 for x64-based Systems[2] (3140745)

Windows 10 Version 1511 for 32-bit Systems[2] (3140768)

Windows 10 Version 1511 for x64-based Systems[2] (3140768)

Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core 
installation) (3139852)

Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core 
installation) (3139852)

Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core 
installation) (3139852)

Windows Server 2012 (Server Core installation) (3139852)

Windows Server 2012 R2 (Server Core installation) (3139852)

[1]This update is available via Windows Update.

[2]Windows 10 updates are cumulative. In addition to containing non-security 
updates, they also contain all of the security fixes for all of the Windows 
10-affected vulnerabilities shipping with the monthly security release. The 
update is available via the Windows Update Catalog.

Vulnerability Information

Multiple Win32k Elevation of Privilege Vulnerabilities

Multiple Win32k elevation of privilege vulnerabilities exist when the Windows
kernel-mode driver fails to properly handle objects in memory. An attacker who
successfully exploited this vulnerability could run arbitrary code in kernel 
mode. An attacker could then install programs; view, change, or delete data; 
or create new accounts with full user rights.

To exploit these vulnerabilities, an attacker would first have to log on to 
the system. An attacker could then run a specially crafted application that 
could exploit the vulnerabilities and take control of an affected system. The
update addresses the vulnerabilities by correcting how the Windows kernel-mode
driver handles objects in memory.

The following table contains links to the standard entry for each 
vulnerability in the Common Vulnerabilities and Exposures list:

Vulnerability Title 				CVE number 	Publicly disclosed 	Exploited

Win32k Elevation of Privilege Vulnerability 	CVE-2016-0093	No 			No

Win32k Elevation of Privilege Vulnerability 	CVE-2016-0094	No 			No

Win32k Elevation of Privilege Vulnerability 	CVE-2016-0095	No 			No

Win32k Elevation of Privilege Vulnerability 	CVE-2016-0096	No 			No

- --------------------------END INCLUDED TEXT--------------------

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        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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