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             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0621
 Microsoft Security Bulletin MS16-032: Security Update for Secondary Logon
                to Address Elevation of Privilege (3143141)
                               8 March 2016

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

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Administrator Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-0099  

Original Bulletin: 
   https://technet.microsoft.com/en-us/library/security/MS16-032

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Microsoft Security Bulletin MS16-032: Security Update for Secondary Logon to 
Address Elevation of Privilege (3143141)

Bulletin Number: MS16-032

Bulletin Title: Security Update for Secondary Logon to Address Elevation of 
Privilege

Severity: Important

KB Article: 3143141

Version: 1.0

Published Date: March 8, 2016

Executive Summary

This security update resolves a vulnerability in Microsoft Windows. The 
vulnerability could allow elevation of privilege if the Windows Secondary 
Logon Service fails to properly manage request handles in memory.

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

Affected Software

Windows Vista Service Pack 2 (3139914)

Windows Vista x64 Edition Service Pack 2 (3139914)

Windows Server 2008 for 32-bit Systems Service Pack 2 (3139914)

Windows Server 2008 for x64-based Systems Service Pack 2 (3139914)

Windows Server 2008 for Itanium-based Systems Service Pack 2 (3139914)

Windows 7 for 32-bit Systems Service Pack 1 (3139914)

Windows 7 for x64-based Systems Service Pack 1 (3139914)

Windows Server 2008 R2 for x64-based Systems Service Pack 1 (3139914)

Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 (3139914)

Windows 8.1 for 32-bit Systems (3139914)

Windows 8.1 for x64-based Systems (3139914)

Windows Server 2012 (3139914)

Windows Server 2012 R2 (3139914)

Windows RT 8.1 [1] (3139914)

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) (3139914)

Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core 
installation) (3139914)

Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core 
installation) (3139914)

Windows Server 2012 (Server Core installation) (3139914)

Windows Server 2012 R2 (Server Core installation) (3139914)

[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

Secondary Logon Elevation of Privilege Vulnerability - CVE-2016-0099

An elevation of privilege vulnerability exists in Microsoft Windows if the 
Windows Secondary Logon Service fails to properly manage request handles in 
memory. An attacker who successfully exploited this vulnerability could run 
arbitrary code as an administrator. An attacker could then install programs; 
view, change, or delete data; or create new accounts with full user rights.

To exploit this vulnerability, an attacker would first have to log on to the 
system. An attacker could then run a specially crafted application that could
exploit the vulnerability and take control of an affected system. The security
update addresses the vulnerability by correcting how Windows manages request 
handles in memory.

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

Vulnerability Title 					CVE number 	Publicly disclosed 	Exploited

Secondary Logon Elevation of Privilege Vulnerability 	CVE-2016-0099	No 			No

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