U radu Microsoft Windows platformi uočeno je više sigurnosnih propusta koje udaljeni zloćudni korisnik može iskoristiti za dobivanje većih ovlasti u sustavu.
Paket:
Microsoft Windows 7, Microsoft Windows Server 2003, Microsoft Windows Server 2008, Microsoft Windows Vista, Microsoft Windows XP
Operacijski sustavi:
Microsoft Windows XP, Microsoft Windows Server 2003, Microsoft Windows Vista, Microsoft Windows Server 2008, Microsoft Windows 7
Ranjivosti se odnose na win32k.sys (Windows kernel-mode driver). Uzrokovani su neispravnom obradom korisničkih podataka, alokacijom memorije kod rukovanja fontovima i nepravilnim rukovanjem s pokušajima stvaranja određenih dretvi.
Posljedica:
Udaljeni napadač spomenute nedostatke može iskoristiti za dobivanje većih privilegija u sustavu.
Rješenje:
Rješenje problema sigurnosti je korištenje dostupnih programskih nadogradnji.
Microsoft Security Bulletin MS12-041 - Important
Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2709162)
Published: Tuesday, June 12, 2012
Version: 1.0
General Information
Executive Summary
This security update resolves five privately reported vulnerabilities in Microsoft Windows. The vulnerabilities could allow elevation of privilege if an attacker logs on to a system and runs a specially crafted application. An attacker must have valid logon credentials and be able to log on locally to exploit any of these vulnerabilities.
This security update is rated Important for all supported releases of Microsoft Windows. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerabilities by correcting the way that the Windows kernel-mode drivers validate input passed from user mode and handle TrueType font loading, and by introducing additional runtime validation to the thread creation mechanism. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.
Recommendation. The majority of customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates and install this update manually. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.
For administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update at the earliest opportunity using update management software, or by checking for updates using the Microsoft Update service.
See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.
Known Issues. None
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Affected and Non-Affected Software
The following software have been tested to determine which versions or editions are affected. Other versions or editions are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, visit Microsoft Support Lifecycle.
Affected Software
Operating System Maximum Security Impact Aggregate Severity Rating Updates Replaced
Windows XP Service Pack 3
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows XP Professional x64 Edition Service Pack 2
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2003 Service Pack 2
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2003 x64 Edition Service Pack 2
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2003 with SP2 for Itanium-based Systems
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Vista Service Pack 2
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Vista x64 Edition Service Pack 2
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2008 for 32-bit Systems Service Pack 2
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2008 for x64-based Systems Service Pack 2
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2008 for Itanium-based Systems Service Pack 2
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows 7 for 32-bit Systems
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows 7 for 32-bit Systems Service Pack 1
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows 7 for x64-based Systems
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows 7 for x64-based Systems Service Pack 1
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2008 R2 for x64-based Systems
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2008 R2 for x64-based Systems Service Pack 1
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2008 R2 for Itanium-based Systems
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Server Core installation option
Windows Server 2008 for 32-bit Systems Service Pack 2
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2008 for x64-based Systems Service Pack 2
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2008 R2 for x64-based Systems
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
Windows Server 2008 R2 for x64-based Systems Service Pack 1
(KB2709162) Elevation of Privilege Important KB2641653 in MS12-018 replaced by KB2709162
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Frequently Asked Questions (FAQ) Related to This Security Update
Vulnerability Information
Severity Ratings and Vulnerability Identifiers
String Atom Class Name Handling Vulnerability - CVE-2012-1864
String Atom Class Name Handling Vulnerability - CVE-2012-1865
Clipboard Format Atom Name Handling Vulnerability - CVE-2012-1866
Font Resource Refcount Integer Overflow Vulnerability - CVE-2012-1867
Win32k.sys Race Condition Vulnerability - CVE-2012-1868
Update Information
Detection and Deployment Tools and Guidance
Security Update Deployment
Other Information
Acknowledgments
Microsoft thanks the following for working with us to help protect customers:
Tarjei Mandt of Azimuth Security for reporting the String Atom Class Name Handling Vulnerability (CVE-2012-1864)
Tarjei Mandt of Azimuth Security for reporting the Win32k.sys Race Condition Vulnerability (CVE-2012-1865)
Tarjei Mandt of Azimuth Security for reporting the Clipboard Format Atom Name Handling Vulnerability (CVE-2012-1866)
Mateusz "j00ru" Jurczyk of Google Inc. for reporting the Font Resource Refcount Integer Overflow Vulnerability (CVE-2012-1867)
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Microsoft Active Protections Program (MAPP)
To improve security protections for customers, Microsoft provides vulnerability information to major security software providers in advance of each monthly security update release. Security software providers can then use this vulnerability information to provide updated protections to customers via their security software or devices, such as antivirus, network-based intrusion detection systems, or host-based intrusion prevention systems. To determine whether active protections are available from security software providers, please visit the active protections websites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.
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Support
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 computer that is running Windows from viruses and malware: Virus Solution and Security Center
Local support according to your country: International Support
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Disclaimer
The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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Revisions
V1.0 (June 12, 2012): Bulletin published.
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