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             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0538
        Vulnerabilities in Windows Kernel Could Allow Elevation of
                            Privilege (2711167)
                               13 June 2012

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

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-1515 CVE-2012-0217 

Reference:         ESB-2012.0333.2

Original Bulletin: 
   http://technet.microsoft.com/en-us/security/bulletin/MS12-042

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Microsoft Security Bulletin MS12-042 - Important

Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege
(2711167)

Published Date: June 12, 2012 | Updated Date: Unspecified

Version: 1.0

General Information

Executive Summary

This security update resolves one privately reported vulnerability
and one publicly disclosed vulnerability in Microsoft Windows. The
vulnerabilities could allow elevation of privilege if an attacker
logs on to an affected system and runs a specially crafted application
that exploits the vulnerability. An attacker must have valid logon
credentials and be able to log on locally to exploit this vulnerability.
The vulnerability could not be exploited remotely or by anonymous
users.

This security update is rated Important for all 32-bit editions of
Windows XP and Windows Server 2003; Windows 7 for x64-based Systems;
and Windows Server 2008 R2 for x64-based Systems.

The security update addresses the vulnerabilities by correcting the
way that the Windows User Mode Scheduler handles a particular system
request and the way that Windows manages BIOS ROM.

Affected Software

Windows XP Service Pack 3
Windows Server 2003 Service Pack 2
Windows 7 for x64-based Systems
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1

Vulnerability Information

User Mode Scheduler Memory Corruption Vulnerability - CVE-2012-0217

An elevation of privilege vulnerability exists in the way that the
Windows User Mode Scheduler handles system requests. 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 administrative
rights.

To view this vulnerability as a standard entry in the Common
Vulnerabilities and Exposures list, see CVE-2012-0217.


BIOS ROM Corruption Vulnerability - CVE-2012-1515

An elevation of privilege vulnerability exists in the way that
Windows handles BIOS 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 administrative rights.

To view this vulnerability as a standard entry in the Common
Vulnerabilities and Exposures list, see CVE-2012-1515.

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