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Microsoft Security Bulletin MS10-039 - Important

Vulnerabilities in Microsoft SharePoint Could Allow Elevation of Privilege (2028554)

Published:

Version: 1.0

General Information

Executive Summary

This security update resolves one publicly disclosed and two privately reported vulnerabilities in Microsoft SharePoint. The most severe vulnerability could allow elevation of privilege if an attacker convinced a user of a targeted SharePoint site to click on a specially crafted link.

The security update is rated important for all supported versions of Microsoft SharePoint Services 3.0 and all supported editions of Microsoft Office InfoPath 2003, Microsoft Office InfoPath 2007, and Microsoft Office SharePoint Server 2007. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerabilities by modifying the way that Microsoft SharePoint validates input that is provided to an HTTP query, the way that toStaticHTML sanitizes HTML content in Microsoft SharePoint, and the way that Microsoft SharePoint handles specially crafted requests to the Help page. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

This security update also addresses the vulnerability first described in Microsoft Security Advisory 983438.

Recommendation. Microsoft recommends that customers apply the update at the earliest opportunity.

Known Issues. Microsoft Knowledge Base Article 2028554 documents the currently known issues that customers may experience when installing this security update. The article also documents recommended solutions for these issues. When currently known issues and recommended solutions pertain only to specific releases of this software, this article provides links to further articles.

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

SoftwareMaximum Security ImpactAggregate Severity RatingBulletins Replaced by this Update
Microsoft Office Software
Microsoft Office InfoPath 2003 Service Pack 3
(KB980923)
Information DisclosureImportantNone
Microsoft Office InfoPath 2007 Service Pack 1 and Microsoft Office InfoPath 2007 Service Pack 2
(KB979441)
Information DisclosureImportantNone
Microsoft Office SharePoint Server 2007 Service Pack 1 (32-bit editions)[1]
(KB979445)
Information DisclosureImportantMS08-077
Microsoft Office SharePoint Server 2007 Service Pack 2 (32-bit editions)[1]
(KB979445)
Information DisclosureImportantNone
Microsoft Office SharePoint Server 2007 Service Pack 1 (64-bit editions)[1]
(KB979445)
Information DisclosureImportantMS08-077
Microsoft Office SharePoint Server 2007 Service Pack 2 (64-bit editions)
(KB979445)[1]
Information DisclosureImportantNone
Windows SharePoint Services
Microsoft Windows SharePoint Services 3.0 Service Pack 1 and Microsoft Windows SharePoint Services 3.0 Service Pack 2 (32-bit versions)
(KB983444)
Elevation of PrivilegeImportantNone
Microsoft Windows SharePoint Services 3.0 Service Pack 1 and Microsoft Windows SharePoint Services 3.0 Service Pack 2 (64-bit versions)
(KB983444)
Elevation of PrivilegeImportantNone

[1]For supported editions of Microsoft Office SharePoint Server 2007, in addition to security update package KB979445, customers also need to install the security update for Microsoft Windows SharePoint Services 3.0 (KB983444) to be protected from the vulnerabilities described in this bulletin.

Non-Affected Software

Windows SharePoint Services and Microsoft SharePoint
Microsoft Windows SharePoint Services 2.0
Microsoft SharePoint Portal Server 2001 Service Pack 3
Microsoft Office SharePoint Portal Server 2003 Service Pack 3
Microsoft SharePoint Server 2010

Frequently Asked Questions (FAQ) Related to This Security Update

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

Help.aspx XSS Vulnerability - CVE-2010-0817

toStaticHTML Information Disclosure Vulnerability - CVE-2010-1257

Sharepoint Help Page Denial of Service Vulnerability - CVE-2010-1264

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:

  • Chris Weber of Casaba Security for reporting the toStaticHTML Information Disclosure Vulnerability (CVE-2010-1257)
  • Rik Jones of the Dallas County Community College District for reporting the SharePoint Help Page Denial of Service Vulnerability (CVE-2010-1264)

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 (June 8, 2010): Bulletin published.