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Microsoft Security Bulletin MS07-050 - Critical

Vulnerability in Vector Markup Language Could Allow Remote Code Execution (938127)

Published: | Updated:

Version: 2.0

General Information

Executive Summary

This security update resolves a privately reported vulnerability in the Vector Markup Language (VML) implementation in Windows. The vulnerability could allow remote code execution if a user viewed a specially crafted Web page using Internet Explorer. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

The security update is rated critical for supported releases of Internet Explorer 5.01, Internet Explorer 6, and Internet Explorer 7. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerability by strengthening the validation of requests to render VML within Internet Explorer. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection under the next section, Vulnerability Information.

Recommendation. Microsoft recommends that customers apply the update immediately.

Known Issues. Microsoft Knowledge Base Article 938127 documents the currently known issues that customers may experience when they install this security update. The article also documents recommended solutions for these issues.

Affected and Non-Affected Software

The software listed here has 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 SystemComponentMaximum Security ImpactAggregate Severity RatingBulletins Replaced by This Update
Internet Explorer 5.01 and Internet Explorer 6 Service Pack 1
Microsoft Windows 2000 Service Pack 4Microsoft Internet Explorer 5.01 Service Pack 4Remote Code ExecutionCriticalMS07-004
Microsoft Windows 2000 Service Pack 4Microsoft Internet Explorer 6 Service Pack 1Remote Code ExecutionCriticalMS07-004
Internet Explorer 6
Windows XP Service Pack 2Microsoft Internet Explorer 6Remote Code ExecutionCriticalMS07-004
Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2Microsoft Internet Explorer 6Remote Code ExecutionCriticalMS07-004
Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2Microsoft Internet Explorer 6Remote Code ExecutionCriticalMS07-004
Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2Microsoft Internet Explorer 6Remote Code ExecutionCriticalMS07-004
Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based SystemsMicrosoft Internet Explorer 6Remote Code ExecutionCriticalMS07-004
Internet Explorer 7
Windows XP Service Pack 2Windows Internet Explorer 7Remote Code ExecutionCriticalMS07-004
Windows XP Service Pack 3Windows Internet Explorer 7Remote Code ExecutionCriticalNone
Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2Windows Internet Explorer 7Remote Code ExecutionCriticalMS07-004
Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2Windows Internet Explorer 7Remote Code ExecutionCriticalMS07-004
Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2Windows Internet Explorer 7Remote Code ExecutionCriticalMS07-004
Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based SystemsWindows Internet Explorer 7Remote Code ExecutionCriticalMS07-004
Windows VistaWindows Internet Explorer 7Remote Code ExecutionCriticalNone
Windows Vista x64 EditionWindows Internet Explorer 7Remote Code ExecutionCriticalNone

Frequently Asked Questions (FAQ) Related to This Security Update

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

VML Buffer Overrun Vulnerability - CVE-2007-1749

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:

Support

  • Customers in the U.S. and Canada can receive technical support from Microsoft Product Support Services at 1-866-PCSAFETY. There is no charge for support calls that are associated with security updates.
  • 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 (August 14, 2007): Bulletin published.
  • V1.1 (August 15, 2007): Bulletin revised to correct file information for Microsoft Internet Explorer 7 for Windows 2003.
  • V1.2 (August 22, 2007): Bulletin revised to correct Registry Key Verification for Internet Explorer 7 for all supported 32-bit editions, 64-bit editions, and Itanium-based editions of Windows Server 2003.
  • V2.0 (August 26, 2008): Bulletin revised to include Internet Explorer 7 for Windows XP Service Pack 3.