Microsoft Security Bulletin MS07-041 - Important

Vulnerability in Microsoft Internet Information Services Could Allow Remote Code Execution (939373)

Published: | Updated:

Version: 1.1

General Information

Executive Summary

This important security update resolves a privately reported vulnerability. This vulnerability could allow remote code execution if an attacker sent specially crafted URL requests to a Web page hosted by Internet Information Services (IIS) 5.1 on Windows XP Professional Service Pack 2. IIS 5.1 is not part of a default install of Windows XP Professional Service Pack 2. An attacker who successfully exploited this vulnerability could take complete control of the affected system.

This is an important security update for all supported 32-bit editions of Windows XP Service Pack 2. For more information, see the subsection, Affected and Non-Affected Software, in this section.

This security update addresses the vulnerability by adding a check on memory requests within Internet Information Services. 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 apply the update immediately.

Known Issues: Microsoft Knowledge Base Article 939373 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

In the following tables of affected and non-affected software, software editions that are not listed are past their support lifecycle. To determine the support lifecycle for your product and edition, visit Microsoft Support Lifecycle.

Affected Software

SoftwareComponentMaximum Security ImpactAggregate Severity RatingBulletins Replaced By This Update
Windows XP Professional Service Pack 2Microsoft Internet Information Services (IIS) 5.1Remote Code ExecutionImportantNone

Non-Affected Software

Operating System
Windows 2000 Service Pack 4
Windows XP Home Service Pack 2
Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems
Windows Vista
Windows Vista x64 Edition

Frequently Asked Questions (FAQ) Related to This Security Update

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

IIS Memory Request Vulnerability - CVE-2005-4360

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:

  • Jonathan Afek and Adi Sharabani of Watchfire for working with Microsoft and supplying additional information about the IIS Memory Request Vulnerability (CVE-2005-4360).
  • Peter Winter-Smith of NGSSoftware for working with Microsoft and supplying additional information about the IIS Memory Request Vulnerability (CVE-2005-4360).

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 (July 10, 2007): Bulletin published.
  • V1.1 (July 12, 2007): Bulletin updated: additional clarification has been added explaining that the vulnerability lies in an object IIS 5.1 uses to maintain statistics on hosted applications.