===================================================================== CERT-Renater Note d'Information No. 2009/VULN332 _____________________________________________________________________ DATE : 13/08/2009 HARDWARE PLATFORM(S) : / OPERATING SYSTEM(S) : Systems running Microsoft Office Web Components, Microsoft Office, Microsoft ISA Server, Microsoft BizTalk Server, Microsoft Visual Studio .NET, Microsoft Office Small Business Accounting. ====================================================================== KB957638 http://www.microsoft.com/technet/security/bulletin/ms09-043.mspx ______________________________________________________________________ Microsoft Security Bulletin MS09-043 - Critical Vulnerabilities in Microsoft Office Web Components Could Allow Remote Code Execution (957638) Published: August 11, 2009 Version: 1.0 General Information Executive Summary This security update resolves several privately reported vulnerabilities in Microsoft Office Web Components that could allow remote code execution if a user viewed a specially crafted Web page. An attacker who successfully exploited these vulnerabilities could gain the same user rights as the local user. 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 security update is rated Critical for all supported editions of Microsoft Office XP, Microsoft Office 2003, Microsoft Office 2000 Web Components, Microsoft Office XP Web Components, Microsoft Office 2003 Web Components, Microsoft Office 2003 Web Components for the 2007 Microsoft Office system, Microsoft Internet Security and Acceleration Server 2004 Standard Edition, Microsoft Internet Security and Acceleration Server 2004 Enterprise Edition, Microsoft Internet Security and Acceleration Server 2006, Microsoft BizTalk Server 2002, Microsoft Visual Studio .NET 2003, and Microsoft Office Small Business Accounting 2006. For more information, see the subsection, Affected and Non-Affected Software, in this section. The security update addresses the vulnerabilities by correctly handling memory allocation when the ActiveX control is used in Internet Explorer, correcting validation logic for Office Web Components ActiveX control methods, and performing additional parameter validation. For more information about the vulnerabilities, 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 973472. The security updates addressed in this bulletin are not related to the vulnerabilities described in Microsoft Security Advisory 973882. Recommendation. Microsoft recommends that customers apply the update immediately. Known Issues. Microsoft Knowledge Base Article 957638 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 Software Microsoft Office XP Service Pack 3 Microsoft Office 2003 Service Pack 3 Microsoft Office 2000 Web Components Service Pack 3 Microsoft Office XP Web Components Service Pack 3 Microsoft Office 2003 Web Components Service Pack 3 Microsoft Office 2003 Web Components Service Pack 1 for the 2007 2007 Microsoft Office System** Microsoft Internet Security and Acceleration Server 2004 Standard Edition Service Pack 3* Microsoft Internet Security and Acceleration Server 2004 Enterprise Edition Service Pack 3 Microsoft Internet Security and Acceleration Server 2006 Standard Edition Service Pack 1 Microsoft Internet Security and Acceleration Server 2006 Enterprise Edition Service Pack 1 Microsoft BizTalk Server 2002 Microsoft Visual Studio .NET 2003 Service Pack 1 Microsoft Office Small Business Accounting 2006 *Microsoft ISA Server 2004 Standard Edition is delivered as a standalone product. Microsoft ISA Server 2004 Standard Edition is also delivered as a component of Windows Small Business Server 2003 Premium Edition Service Pack 1 and Windows Small Business Server 2003 R2 Premium Edition. **SQL Server 2008 and Microsoft Forefront Threat Management Gateway Medium Business Edition redistribute the affected component Office 2003 Web Components for the 2007 Microsoft Office System. The update for the Office 2003 Web Components for the 2007 Microsoft Office System component detects for SQL Server 2008 and Microsoft Forefront Threat Management Gateway Medium Business Edition and will offer the update to customers. Vulnerability Information Office Web Components Memory Allocation Vulnerability - CVE-2009-0562 A remote code execution vulnerability exists in the Office Web Components ActiveX Control. An attacker could exploit the vulnerability by constructing a specially crafted Web page. When a user views the Web page, the vulnerability could allow remote code execution. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user. Office Web Components Heap Corruption Vulnerability - CVE-2009-2496 A remote code execution vulnerability exists in the Office Web Components ActiveX Control. An attacker could exploit the vulnerability by constructing a specially crafted Web page. When a user views the Web page, the vulnerability could allow remote code execution. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user. Office Web Components HTML Script Vulnerability - CVE-2009-1136 A remote code execution vulnerability exists in the Office Web Components ActiveX Control. An attacker could exploit the vulnerability by constructing a specially crafted Web page. When a user views the Web page, the vulnerability could allow remote code execution. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user. Office Web Components Buffer Overflow Vulnerability - CVE-2009-1534 A remote code execution vulnerability exists in the Office Web Components ActiveX Control. An attacker could exploit the vulnerability by constructing a specially crafted Web page. When a user views the Web page, the vulnerability could allow remote code execution. An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user. ====================================================================== ========================================================= Les serveurs de référence du CERT-Renater http://www.urec.fr/securite http://www.cru.fr/securite http://www.renater.fr ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 151 bd de l'Hopital | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================