U radu programske komponente Microsoft Active Accessibility uočen je sigurnosni propust koji napadaču može omogućiti izvršavanje proizvoljnog programskog koda.
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
Problem:
neodgovarajuće rukovanje datotekama, pogreška u programskoj komponenti
Iskorištavanje:
udaljeno
Posljedica:
preuzimanje potpune kontrole nad sustavom, proizvoljno izvršavanje programskog koda
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2011-1247
Izvorni ID preporuke:
MS11-075
Izvor:
Microsoft
Problem:
Propust nastaje jer komponenta Microsoft Active Accessibility učitava biblioteke na nesiguran način.
Posljedica:
Udaljeni napadač mogao bi pokrenuti proizvoljan programski kod i preuzeti kontrolu nad sustavom.
Microsoft Security Bulletin MS11-075 - Important
Vulnerability in Microsoft Active Accessibility Could Allow Remote Code Execution (2623699)
Published: Tuesday, October 11, 2011
Version: 1.0
General Information
Executive Summary
This security update resolves a privately reported vulnerability in the Microsoft Active Accessibility component. The vulnerability could allow remote code execution if an attacker convinces a user to open a legitimate file that is located in the same network directory as a specially crafted dynamic link library (DLL) file. Then, while opening the legitimate file, the Microsoft Active Accessibility component could attempt to load the DLL file and execute any code it contained. For an attack to be successful, a user must visit an untrusted remote file system location or WebDAV share and open a document from this location that is then loaded by a vulnerable application.
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 vulnerability by correcting the manner in which the Microsoft Active Accessibility component loads external libraries. For more information about the vulnerability, 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
Top of section
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 Bulletins Replaced by this Update
Windows XP Service Pack 3
(KB2564958) Remote Code Execution Important None
Windows XP Professional x64 Edition Service Pack 2
(KB2564958) Remote Code Execution Important None
Windows Server 2003 Service Pack 2
(KB2564958) Remote Code Execution Important None
Windows Server 2003 x64 Edition Service Pack 2
(KB2564958) Remote Code Execution Important None
Windows Server 2003 with SP2 for Itanium-based Systems
(KB2605295) Remote Code Execution Important None
Windows Vista Service Pack 2
(KB2564958) Remote Code Execution Important None
Windows Vista x64 Edition Service Pack 2
(KB2564958) Remote Code Execution Important None
Windows Server 2008 for 32-bit Systems Service Pack 2*
(KB2564958) Remote Code Execution Important None
Windows Server 2008 for x64-based Systems Service Pack 2*
(KB2564958) Remote Code Execution Important None
Windows Server 2008 for Itanium-based Systems Service Pack 2
(KB2564958) Remote Code Execution Important None
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
(KB2564958) Remote Code Execution Important None
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1
(KB2564958) Remote Code Execution Important None
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1*
(KB2564958) Remote Code Execution Important None
Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
(KB2564958) Remote Code Execution Important None
*Server Core installation affected. This update applies, with the same severity rating, to supported editions of Windows Server 2008 or Windows Server 2008 R2 as indicated, whether or not installed using the Server Core installation option. For more information on this installation option, see the TechNet articles, Managing a Server Core Installation and Servicing a Server Core Installation. Note that the Server Core installation option does not apply to certain editions of Windows Server 2008 and Windows Server 2008 R2; see Compare Server Core Installation Options.
Top of section
Frequently Asked Questions (FAQ) Related to This Security Update
Vulnerability Information
Severity Ratings and Vulnerability Identifiers
Active Accessibility Insecure Library Loading Vulnerability - CVE-2011-1247
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:
Mila Parkour, working with Anshul Kothari and Nishant Kaushik of Adobe Systems, Inc., for reporting the Active Accessibility Insecure Library Loading Vulnerability (CVE-2011-1247)
Top of section
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 Web sites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.
Top of section
Support
Customers in the U.S. and Canada can receive technical support from Security Support or 1-866-PCSAFETY. There is no charge for support calls that are associated with security updates. For more information about available support options, see Microsoft Help and Support.
International customers can receive support from their local Microsoft subsidiaries. There is no charge for support that is associated with security updates. For more information about how to contact Microsoft for support issues, visit the International Support Web site.
Top of section
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.
Top of section
Revisions
V1.0 (October 11, 2011): Bulletin published.
Posljednje sigurnosne preporuke