Microsoft Security Bulletin MS10-086 - Moderate
Vulnerability in Windows Shared Cluster Disks Could Allow Tampering (2294255)
Published: | Updated:
This security update resolves a privately reported vulnerability in Windows Server 2008 R2 when used as a shared failover cluster. The vulnerability could allow data tampering on the administrative shares of failover cluster disks. By default, Windows Server 2008 R2 servers are not affected by this vulnerability. This vulnerability only applies to the cluster disks used in a failover cluster.
This security update is rated Moderate for all supported editions of Windows Server 2008 R2. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses this vulnerability by changing the way the Microsoft Cluster Service (MSCS) user interface sets permissions on administrative shares when adding or creating new shared cluster disks. 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. Microsoft recommends that customers consider applying the security update 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
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.
|Operating System||Maximum Security Impact||Aggregate Severity Rating||Bulletins Replaced by this Update|
|Windows Server 2008 R2 for x64-based Systems*||Tampering||Moderate||None|
|Windows Server 2008 R2 for Itanium-based Systems||Tampering||Moderate||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.
|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|
|Windows Vista Service Pack 1 and Windows Vista Service Pack 2|
|Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2|
|Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2|
|Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2|
|Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2|
|Windows 7 for 32-bit Systems|
|Windows 7 for x64-based Systems|
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.
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- V1.0 (October 12, 2010): Bulletin published.
- V1.1 (November 10, 2010): Added an update FAQ to explain that this update in fact corrects the permissions on existing shared cluster disks. This is an informational change only. Customers who have already successfully updated their systems do not need to take any action.