__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Vulnerability in Vector Markup Language [Microsoft Security Bulletin (MS07-050)] August 15, 2007 14:00 GMT Number R-324 [REVISED 16 Aug 2007] [REVISED 24 Aug 2007] ______________________________________________________________________________ PROBLEM: A remote code execution vulnerability exists in the Vector Markup Language (VML) implementation in Microsoft Windows. PLATFORM: Windows 2000 (all editions) Windows XP (all editions) Windows Server 2003 (all editions) Windows Vists (all editions) DAMAGE: Could allow remote code execution. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. An attacker coud exploit the vulnerability ASSESSMENT: by constructing a specially crafted Web page or HTML e-mail. When a user views the Web page or the message, the vulnerability could allow remote code execution. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/r-324.shtml ORIGINAL BULLETIN: http://www.microsoft.com/technet/security/Bulletin/MS07- 050.mspx CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2007-1749 ______________________________________________________________________________ REVISION HISTORY: 08/16/2007 - revised R-324 to reflect changes Microsoft has made in MS07-050 where they corrected the file information for Microsoft Internet Explorer 7 for Windows 2003. 08/24/2007 - revised R-324 to reflect changes Microsoft has made in MS07-050 where they corrected the Registry Key Verification for Internet Explorer 7 for all supported 32-bit editions, 64-bit editions, and Itanium-based editions of Windows Server 2003. [***** Start Microsoft Security Bulletin (MS07-050) *****] Microsoft Security Bulletin MS07-050 - Critical Vulnerability in Vector Markup Language Could Allow Remote Code Execution (938127) Published: August 14, 2007 | Updated: August 22, 2007 Version: 1.2 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. Top of section 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 System Component Maximum Security Impact Aggregate Severity Rating Bulletins Replaced by This Update Internet Explorer 5.01 and Internet Explorer 6 Service Pack 1 Microsoft Windows 2000 Service Pack 4 Microsoft Internet Explorer 5.01 Service Pack 4 Remote Code Execution Critical MS07-004 Microsoft Windows 2000 Service Pack 4 Microsoft Internet Explorer 6 Service Pack 1 Remote Code Execution Critical MS07-004 Internet Explorer 6 Windows XP Service Pack 2 Microsoft Internet Explorer 6 Remote Code Execution Critical MS07-004 Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 Microsoft Internet Explorer 6 Remote Code Execution Critical MS07-004 Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2 Microsoft Internet Explorer 6 Remote Code Execution Critical MS07-004 Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2 Microsoft Internet Explorer 6 Remote Code Execution Critical MS07-004 Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems Microsoft Internet Explorer 6 Remote Code Execution Critical MS07-004 Internet Explorer 7 Windows XP Service Pack 2 Windows Internet Explorer 7 Remote Code Execution Critical MS07-004 Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 Windows Internet Explorer 7 Remote Code Execution Critical MS07-004 Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2 Windows Internet Explorer 7 Remote Code Execution Critical MS07-004 Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2 Windows Internet Explorer 7 Remote Code Execution Critical MS07-004 Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems Windows Internet Explorer 7 Remote Code Execution Critical MS07-004 Windows Vista Windows Internet Explorer 7 Remote Code Execution Critical None Windows Vista x64 Edition Windows Internet Explorer 7 Remote Code Execution Critical None Vulnerability Information Severity Ratings and Vulnerability Identifiers Vulnerability Severity Rating and Maximum Security Impact by Affected Software Affected Software VML Buffer Overrun Vulnerability - CVE-2007-1749 Internet Explorer 5.01 and Internet Explorer 6 Service Pack 1 Internet Explorer 5.01 Service Pack 4 on Microsoft Windows 2000 Service Pack 4 Critical Remote Code Execution Internet Explorer 6 Service Pack 1 when installed on Microsoft Windows 2000 Service Pack 4 Critical Remote Code Execution Internet Explorer 6 Internet Explorer 6 for Windows XP Service Pack 2 Critical Remote Code Execution Internet Explorer 6 for Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 Critical Remote Code Execution Internet Explorer 6 for Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2 Critical Remote Code Execution Internet Explorer 6 for Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2 Critical Remote Code Execution Internet Explorer 6 for Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems Critical Remote Code Execution Internet Explorer 7 Internet Explorer 7 for Windows XP Service Pack 2 Critical Remote Code Execution Internet Explorer 7 for Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 Critical Remote Code Execution Internet Explorer 7 for Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2 Critical Remote Code Execution Internet Explorer 7 for Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2 Critical Remote Code Execution Internet Explorer 7 for Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems Critical Remote Code Execution Internet Explorer 7 in Windows Vista Critical Remote Code Execution Internet Explorer 7 in Windows Vista x64 Edition Critical Remote Code Execution VML Buffer Overrun Vulnerability - CVE-2007-1749 A remote code execution vulnerability exists in the Vector Markup Language (VML) implementation in Microsoft Windows. An attacker could exploit the vulnerability by constructing a specially crafted Web page or HTML e-mail. When a user views the Web page or the message, the vulnerability could allow remote code execution. To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2007-1749. Update Information Detection and Deployment Tools and Guidance Manage the software and security updates you need to deploy to the servers, desktop, and mobile computers in your organization. For more information see the TechNet Update Management Center. The Microsoft TechNet Security Web site provides additional information about security in Microsoft products. Security updates are available from Microsoft Update, Windows Update, and Office Update. Security updates are also available at the Microsoft Download Center. You can find them most easily by doing a keyword search for "security_patch." Finally, security updates can be downloaded from the Windows Update Catalog. For more information about the Windows Update Catalog, see Microsoft Knowledge Base Article 323166. Detection and Deployment Guidance Microsoft has provided detection and deployment guidance for this month’s security updates. This guidance will also help IT professionals understand how they can use various tools to help deploy the security update, such as Windows Update, Microsoft Update, Office Update, the Microsoft Baseline Security Analyzer (MBSA), the Office Detection Tool, Microsoft Systems Management Server (SMS), the Extended Security Update Inventory Tool, and the Enterprise Update Scan Tool (EST). For more information, see Microsoft Knowledge Base Article 910723. Microsoft Baseline Security Analyzer Microsoft Baseline Security Analyzer (MBSA) allows administrators to scan local and remote systems for missing security updates as well as common security misconfigurations. For more information about MBSA visit Microsoft Baseline Security Analyzer Web site. The following table provides the MBSA detection summary for this security update. Software MBSA 1.2.1 Enterprise Scanning Tool (EST) MBSA 2.0.1 Windows 2000 Service Pack 4 No Yes Yes Windows XP Service Pack 2 No Yes Yes Windows XP Professional x64 Edition and Microsoft Windows XP Professional x64 Edition Service Pack 2 No Yes Yes Windows Server 2003 Service Pack 1 and Microsoft Windows Server 2003 Service Pack 2 No Yes Yes Windows Server 2003 x64 Edition and Microsoft Windows Server 2003 x64 Edition Service Pack 2 No Yes Yes Windows Server 2003 with SP1 for Itanium-based Systems and Microsoft Windows Server 2003 with SP2 for Itanium-based Systems No Yes Yes Windows Vista No No See Note for Windows Vista below Windows Vista x64 Edition No No See Note for Windows Vista below Note for Windows Vista Microsoft does not support installing MBSA 2.0.1 on computers that run Windows Vista, but you may install MBSA 2.0.1 on a supported operating system and then scan the Windows Vista-based computer remotely. For additional information about MBSA support for Windows Vista, visit the MBSA Web site. See also Microsoft Knowledge Base Article 931943: Microsoft Baseline Security Analyzer (MBSA) support for Windows Vista. For more information about MBSA, visit the MBSA Web site. For more information about the software that Microsoft Update and MBSA 2.0 currently do not detect, see Microsoft Knowledge Base Article 895660. What is the Enterprise Update Scan Tool (EST)? As part of an ongoing commitment to provide detection tools for bulletin-class security updates, Microsoft delivers a stand-alone detection tool whenever the Microsoft Baseline Security Analyzer (MBSA) and the Office Detection Tool (ODT) cannot detect whether the update is required for an MSRC release cycle. This stand-alone tool is called the Enterprise Update Scan Tool (EST) and is designed for enterprise administrators. When a version of the Enterprise Update Scan Tool is created for a specific bulletin, customers can run the tool from a command line interface (CLI) and view the results of the XML output file. To help customers better utilize the tool, detailed documentation will be provided with the tool. There is also a version of the tool that offers an integrated experience for SMS administrators. Can I use a version of the Enterprise Update Scan Tool (EST) to determine whether this update is required? Yes. Microsoft has created a version of the EST that will determine if you have to apply this update. For download links and more information about the version of the EST that is being released this month, see the following Microsoft Web site. Windows Server Update Services By using Windows Server Update Services (WSUS), administrators can deploy the latest critical updates and security updates for Windows 2000 operating systems and later, Office XP and later, Exchange Server 2003, and SQL Server 2000 to Windows 2000 and later operating systems. For more information about how to deploy this security update using Windows Server Update Services, visit the Windows Server Update Services Web site. Systems Management Server The following table provides the SMS detection and deployment summary for this security update. Software SMS 2.0 SMS 2003 Microsoft Windows 2000 Service Pack 4 Yes Yes Windows XP Service Pack 2 Yes Yes Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2 No Yes Windows Server 2003 Service Pack 1 and Microsoft Windows Server 2003 Service Pack 2 Yes Yes Windows Server 2003 x64 Edition and Microsoft Windows Server 2003 x64 Edition Service Pack 2 No Yes Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems No Yes Windows Vista No See Note for Windows Vista below Windows Vista x64 Edition No See Note for Windows Vista below SMS 2.0 and SMS 2003 Software Update Services (SUS) Feature Pack can use MBSA 1.2.1 for detection and therefore have the same limitation that is listed earlier in this bulletin related to programs that MBSA 1.2.1 does not detect. For SMS 2.0, the SMS SUS Feature Pack, which includes the Security Update Inventory Tool (SUIT), can be used by SMS to detect security updates. SMS SUIT uses the MBSA 1.2.1 engine for detection. For more information about SUIT, visit the following Microsoft Web site. For more information about the limitations of SUIT, see Microsoft Knowledge Base Article 306460. The SMS SUS Feature Pack also includes the Microsoft Office Inventory Tool to detect required updates for Microsoft Office applications. For SMS 2003, the SMS 2003 Inventory Tool for Microsoft Updates (ITMU) can be used by SMS to detect security updates that are offered by Microsoft Update and that are supported by Windows Server Update Services. For more information about the SMS 2003 ITMU, visit the following Microsoft Web site. SMS 2003 can also use the Microsoft Office Inventory Tool to detect required updates for Microsoft Office applications. Note for Windows Vista Microsoft Systems Management Server 2003 with Service Pack 3 includes support for Windows Vista manageability. For more information about SMS, visit the SMS Web site. Security Update Deployment Affected Software For information about the specific security update for your affected software, click the appropriate link: * Windows 2000 (all editions) * Windows XP (all editions) * Windows Server 2003 (all editions) * Windows Vista (all editions) Other Information Acknowledgments Microsoft thanks the following for working with us to help protect customers: • eEye Digital Security for reporting the VML Buffer Overrun Vulnerability - CVE-2007-1749. Top of section 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. Top of section 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. Top of section 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. [***** End Microsoft Security Bulletin (MS07-050) *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Microsoft for the information contained in this bulletin. _______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@ciac.org Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ Anonymous FTP: ftp.ciac.org PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) R-314: gpdf Security Update R-315: Voice Vulnerabilities in Cisco IOS and Cisco Unified Communications Manager R-316: Vulnerability in Microsoft XML Core Services R-317: Vulnerability in OLE Automation R-318: Vulnerability in Microsoft Excel R-319: Cumulative Security Update for Internet Explorer R-320: Vulnerability in GDI R-321: Vulnerabilities in Windows Media Player R-322: Vulnerabilities in Windows Gadgets R-323: Vulnerability in Virtual PC and Virtual Server