Microsoft Security Bulletin MS10-092 - Important
Vulnerability in Task Scheduler Could Allow Elevation of Privilege (2305420)
Published: | Updated:
Version: 1.1
General Information
Executive Summary
This security update resolves a publicly disclosed vulnerability in Windows Task Scheduler. The vulnerability could allow elevation of privilege if an attacker logged on to an affected system and ran a specially crafted application. 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 supported editions of Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerability by correcting the way Task Scheduler conducts integrity checks to validate that tasks run with the intended user privileges. 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. Microsoft Knowledge Base Article 2305420 documents the currently known issues that customers may experience when installing this security update. The article also documents recommended solutions for these issues.
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
*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.
Non-Affected Software
| Operating System |
|---|
| Windows XP Service Pack 3 |
| Windows XP Professional x64 Edition Service Pack 2 |
| Windows Server 2003 Service Pack 2 |
| Windows Server 2003 x64 Edition Service Pack 2 |
| Windows Server 2003 with SP2 for Itanium-based Systems |
Frequently Asked Questions (FAQ) Related to This Security Update
Vulnerability Information
Severity Ratings and Vulnerability Identifiers
Task Scheduler Vulnerability - CVE-2010-3338
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:
- Sergey Golovanov, Alexander Gostev, Maxim Golovkin, and Alexey Monastyrsky of Kaspersky Lab, and Vitaly Kiktenko and Alexander Saprykin of Design and Test Lab for reporting the Task Scheduler Vulnerability (CVE-2010-3338)
- Liam O Murchu of Symantec for reporting the Task Scheduler Vulnerability (CVE-2010-3338)
- Alexandr Matrosov, Eugene Rodionov, Juraj Malcho and David Harley of ESET for reporting the Task Scheduler Vulnerability (CVE-2010-3338)
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.
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.
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.
Revisions
- V1.0 (December 14, 2010): Bulletin published.
- V1.1 (March 2, 2011): Added a link to Microsoft Knowledge Base Article 2305420 under Known Issues in the Executive Summary.