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Microsoft Security Bulletin MS07-044 - Critical

Vulnerability in Microsoft Excel Could Allow Remote Code Execution (940965)

Published: | Updated:

Version: 1.1

General Information

Executive Summary

This security update resolves a privately reported vulnerability in addition to other security issues identified during the course of the investigation. These vulnerabilities could allow remote code execution if a user opens a specially crafted Excel file. 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.

This is a critical security update for supported editions of Microsoft Office 2000. For supported editions of Microsoft Office XP, Microsoft Office 2003, Microsoft Office 2004 for Mac, this update is rated important. This update is also rated important for the Excel Viewer 2003. For more information, see the subsection, Affected and Non-Affected Software, in this section.

This security update addresses these vulnerabilities by modifying the way that Microsoft Excel handles specially crafted Excel files. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

Recommendation. Microsoft recommends that customers apply the update immediately.

Known Issues. None

Affected and Non-Affected Software

The software listed here 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

Office Suite and Other Affected SoftwareComponentMaximum Security ImpactAggregate Severity RatingBulletins Replaced by This Update
Microsoft Office 2000 Service Pack 3Microsoft Excel 2000 Service Pack 3Remote Code ExecutionCriticalMS07-036
Microsoft Office XP Service Pack 3Microsoft Excel 2002 Service Pack 3Remote Code ExecutionImportantMS07-036
Microsoft Office 2003 Service Pack 2Microsoft Excel 2003 Service Pack 2

Microsoft Excel Viewer 2003

Remote Code ExecutionImportantMS07-036
Microsoft Office 2004 for MacMicrosoft Office 2004 for MacRemote Code ExecutionImportantMS07-036

Frequently Asked Questions (FAQ) Related to This Security Update

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

Workspace Memory Corruption Vulnerability – CVE-2007-3890

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:

  • Dyon Balding of Secunia for reporting the Workspace Memory Corruption Vulnerability (CVE-2007-3890)

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 29, 2007): Bulletin updated to change the download link display text for Office components in the Affected Software table.