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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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