__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Cumulative Security Update for Internet Explorer [Microsoft Security Bulletin MS06-067 (922760)] November 14, 2006 18:00 GMT Number R-040 [REVISED 25 Oct 2007] ______________________________________________________________________________ PROBLEM: Remote code execution vulnerabilities exist in DirectAnimation ActiveX controls that could be exploited if the ActiveX controls are passed unexpected data. A remote code execution vulnerability exists in the way Internet Explorer interprets HTML with certain layout combinations. PLATFORM: Microsoft Windows 2000 Service Pack 4 Microsoft Windows XP Service Pack 2 Microsoft Windows XP Professional x64 Edition Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1 Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft Windows Server 2003 with SP1 for Itanium-based Systems Microsoft Windows Server 2003 x64 Edition DAMAGE: An attacker who successfully exploited the most severe of these vulnerabilities could take complete control of an affected system. SOLUTION: Apply current patches. ______________________________________________________________________________ VULNERABILITY The risk is HIGH. An attacker who successfully exploited the ASSESSMENT: most severe of these vulnerabilities could take complete control of an affected system. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/r-040.shtml ORIGINAL BULLETIN: http://www.microsoft.com/technet/security/Bulletin/MS06-067.mspx CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2006-4777, CVE-2006-4446, CVE-2006-4687 ______________________________________________________________________________ REVISION HISTORY: 10/25/2007 - revised R-040 to reflect changes Microsoft has made in MS06-067 where they included MS06-065 as a bulletin that is replaced by MS06-067. [***** Start Microsoft Security Bulletin MS06-067 (922760) *****] Microsoft Security Bulletin MS06-067 Cumulative Security Update for Internet Explorer (922760) Published: November 14, 2006 | Updated: October 24, 2007 Version: 1.1 Summary Who should read this document: Customers who use Microsoft Windows Impact of Vulnerability: Remote Code Execution Maximum Severity Rating: Critical Recommendation: Customers should apply the update immediately. Security Update Replacement: This bulletin replaces several prior security updates. See the frequently asked questions (FAQ) section of this bulletin for the complete list. Caveats: Microsoft Knowledge Base Article 922760 documents the currently known issues that customers may experience when they install this security update. The article also documents recommended solutions for these issues. For more information, see Microsoft Knowledge Base Article 922760. Tested Software and Security Update Download Locations: Affected Software: • Microsoft Windows 2000 Service Pack 4 • Microsoft Windows XP Service Pack 2 • Microsoft Windows XP Professional x64 Edition • Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1 • Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft Windows Server 2003 with SP1 for Itanium-based Systems • Microsoft Windows Server 2003 x64 Edition Non-Affected Software: • Windows Vista Tested Microsoft Windows Components: Affected Components: • Microsoft Internet Explorer 5.01 Service Pack 4 on Windows 2000 Service Pack 4 — Download the update • Microsoft Internet Explorer 6 Service Pack 1 on Windows 2000 Service Pack 4 — Download the update • Microsoft Internet Explorer 6 for Windows XP Service Pack 2 — Download the update • Microsoft Internet Explorer 6 for Windows XP Professional x64 Edition — Download the update • Microsoft Internet Explorer 6 for Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1 — Download the update • Microsoft Internet Explorer 6 for Windows Server 2003 for Itanium-based Systems and Windows Server 2003 with SP1 for Itanium-based Systems — Download the update • Microsoft Internet Explorer 6 for Windows Server 2003 x64 Edition — Download the update Non-Affected Components: • Windows Internet Explorer 7 for Windows XP Service Pack 2 • Windows Internet Explorer 7 for Windows XP Professional x64 Edition • Windows Internet Explorer 7 for Windows Server 2003 Service Pack 1 • Windows Internet Explorer 7 for Windows Server 2003 with SP1 for Itanium-based Systems • Windows Internet Explorer 7 for Windows Server 2003 x64 Edition • Windows Internet Explorer 7 in Windows Vista The software in this list has been tested to determine whether the versions are affected. Other versions either no longer include security update support or may not be affected. To determine the support life cycle for your product and version, visit the Microsoft Support Lifecycle Web site. Note The security updates for Microsoft Windows Server 2003, Windows Server 2003 Service Pack 1, and Windows Server 2003 x64 Edition also apply to Windows Server 2003 R2. Top of sectionTop of section General Information Executive Summary Executive Summary: This update resolves several newly discovered, publicly and privately reported vulnerabilities. Each vulnerability is documented in its own “Vulnerability Details” section of this bulletin. If a user is logged on with administrative user rights, an attacker who successfully exploited the most severe of these vulnerabilities could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. 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. We recommend that customers apply the update immediately. Severity Ratings and Vulnerability Identifiers: Vulnerability Identifiers Impact of Vulnerability Internet Explorer 5.01 Service Pack 4 on Windows 2000 Service Pack 4 Internet Explorer 6 Service Pack 1 for Windows 2000 Service Pack 4 Internet Explorer 6 for Windows XP Service Pack 2 Internet Explorer 6 for Windows Server 2003 Internet Explorer 6 for Windows Server 2003 Service Pack 1 DirectAnimation ActiveX Controls Memory Corruption Vulnerability - CVE-2006-4777 Remote Code Execution Critical Critical Critical Moderate Moderate DirectAnimation ActiveX Controls Memory Corruption Vulnerability - CVE-2006-4446 Remote Code Execution Critical Critical Critical Moderate Moderate HTML Rendering Memory Corruption Vulnerability - CVE-2006-4687 Remote Code Execution None Critical Critical Critical Critical Aggregate Severity of All Vulnerabilities Critical Critical Critical Critical Critical This assessment is based on the types of systems that are affected by the vulnerability, their typical deployment patterns, and the effect that exploiting the vulnerability would have on them. Note The security updates for Windows Server 2003, Windows Server 2003 Service Pack 1, and Windows Server 2003 x64 Edition also apply to Windows Server 2003 R2. Note The severity ratings for non-x86 operating system versions map to the x86 operating systems versions as follows: • The Windows XP Professional x64 Edition severity rating is the same as the Windows XP Service Pack 2 severity rating. • The Windows Server 2003 for Itanium-based Systems severity rating is the same as the Windows Server 2003 severity rating. • The Windows Server 2003 with SP1 for Itanium-based Systems severity rating is the same as the Windows Server 2003 Service Pack 1 severity rating. • The Windows Server 2003 x64 Edition severity rating is the same as the Windows Server 2003 Service Pack 1 severity rating. • The Internet Explorer 6 for Windows XP 64-Bit Edition Version 2003 (Itanium) and Windows XP Professional x64 Edition severity rating is the same as the Internet Explorer 6 Service Pack 1 (all supported operating system versions earlier than Windows Server 2003) severity rating. • The Internet Explorer 6 for Windows Server 2003 for Itanium-based Systems and Windows Server 2003 x64 Edition severity rating is the same as the Internet Explorer 6 for Windows Server 2003 severity rating. Top of sectionTop of section Vulnerability Details DirectAnimation ActiveX Controls Memory Corruption Vulnerabilities - CVE-2006-4446 and CVE-2006-4777: Remote code execution vulnerabilities exist in DirectAnimation ActiveX controls that could be exploited if the ActiveX controls are passed unexpected data. An attacker could exploit these vulnerabilities by constructing a specially crafted Web page that could potentially allow remote code execution if a user visited the specially crafted Web page. An attacker who successfully exploited these vulnerabilities could take complete control of an affected system. Mitigating Factors for DirectAnimation ActiveX Controls Memory Corruption Vulnerabilities - CVE-2006-4446 and CVE-2006-4777: • In a Web-based attack scenario, an attacker could host a Web site that contains a Web page that is used to exploit these vulnerabilities. In addition, compromised Web sites and Web sites that accept or host user-provided content or advertisements could contain specially crafted content that could exploit these vulnerabilities. In all cases, however, an attacker would have no way to force users to visit these Web sites. Instead, an attacker would have to persuade users to visit the Web site, typically by getting them to click a link in an e-mail message or instant messenger message that takes users to the attacker's Web site. • 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. • The Restricted sites zone helps reduce attacks that could try to exploit these vulnerabilities by preventing Active Scripting and ActiveX controls from being used when reading HTML e-mail. However, if a user clicks on a link within an e-mail they could still be vulnerable to this issue through the Web-based attack scenario. By default, Outlook Express 6, Outlook 2002, and Outlook 2003 open HTML e-mail messages in the Restricted sites zone. Additionally Outlook 2000 opens HTML e-mail messages in the Restricted sites zone if the Outlook E-mail Security Update has been installed. Outlook Express 5.5 Service Pack 2 opens HTML e-mail messages in the Restricted sites zone if Microsoft Security Bulletin MS04-018 has been installed. • By default, Internet Explorer on Windows Server 2003 runs in a restricted mode that is known as Enhanced Security Configuration. This mode sets the security level for the Internet zone to High. This is a mitigating factor for Web sites that have not been added to Internet Explorer Trusted sites zone. See the FAQ section of this security update for more information about Internet Explorer Enhanced Security Configuration Top of sectionTop of section HTML Rendering Memory Corruption Vulnerability - CVE-2006-4687: A remote code execution vulnerability exists in the way Internet Explorer interprets HTML with certain layout combinations. An attacker could exploit the vulnerability by constructing a specially crafted Web page that could potentially allow remote code execution if a user viewed the Web page. An attacker who successfully exploited this vulnerability could take complete control of an affected system. Mitigating Factors for HTML Rendering Memory Corruption Vulnerability - CVE-2006-4687: • In a Web-based attack scenario, an attacker could host a Web site that contains a Web page that is used to exploit this vulnerability. In addition, compromised Web sites and Web sites that accept or host user-provided content or advertisements could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these Web sites. Instead, an attacker would have to persuade users to visit the Web site, typically by getting them to click a link in an e-mail message or instant messenger message that takes users to the attacker's Web site. • An attacker who successfully exploited this vulnerability 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. • The Restricted sites zone helps reduce attacks that could try to exploit this vulnerability by preventing Active Scripting from being used when reading HTML e-mail messages. However, if a user clicks a link in an e-mail message, the user could still be vulnerable to this issue through the Web-based attack scenario. By default, Outlook Express 6, Outlook 2002, and Outlook 2003 open HTML e-mail messages in the Restricted sites zone. Additionally Outlook 2000 opens HTML e-mail messages in the Restricted sites zone if the Outlook E-mail Security Update has been installed. Outlook Express 5.5 Service Pack 2 opens HTML e-mail messages in the Restricted sites zone if Microsoft Security Bulletin MS04-018 has been installed. Note It cannot be ruled out that this vulnerability could be used in an exploit without Active Scripting. However, using Active Scripting significantly increases the chances of a successful exploit. As a result, this vulnerability has been given a severity rating of Critical on Windows Server 2003. • By default, Internet Explorer on Windows Server 2003 runs in a restricted mode that is known as Enhanced Security Configuration. This mode mitigates this vulnerability in the e-mail vector because reading e-mail messages in plain text is the default configuration for Outlook Express. See the FAQ section of this security update for more information about Internet Explorer Enhanced Security Configuration. Top of sectionTop of section Acknowledgments Microsoft thanks the following for working with us to help protect customers: • Sam Thomas, working with TippingPoint and the Zero Day Initiative, for reporting the HTML Rendering Memory Corruption Vulnerability (CVE-2006-4687). Obtaining Other Security Updates: Updates for other security issues are available at the following locations: • Security updates are available at the Microsoft Download Center. You can find them most easily by doing a keyword search for "security_patch." • Updates for consumer platforms are available at the Microsoft Update Web site. 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. Security Resources: • The Microsoft TechNet Security Web site provides additional information about security in Microsoft products. • TechNet Update Management Center • Microsoft Software Update Services • Microsoft Windows Server Update Services • Microsoft Baseline Security Analyzer (MBSA) • Windows Update • Microsoft Update • Windows Update Catalog: For more information about the Windows Update Catalog, see Microsoft Knowledge Base Article 323166. • Office Update Software Update Services: By using Microsoft Software Update Services (SUS), administrators can quickly and reliably deploy the latest critical updates and security updates to Windows 2000 and Windows Server 2003-based servers, and to desktop systems that are running Windows 2000 Professional or Windows XP Professional. For more information about how to deploy security updates by using Software Update Services, visit the Software Update Services Web site. Windows Server Update Services: By using Windows Server Update Services (WSUS), administrators can quickly and reliably 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 onto Windows 2000 and later operating systems. For more information about how to deploy security updates using Windows Server Update Services, visit the Windows Server Update Services Web site. Systems Management Server: Microsoft Systems Management Server (SMS) delivers a highly configurable enterprise solution for managing updates. By using SMS, administrators can identify Windows-based systems that require security updates and can perform controlled deployment of these updates throughout the enterprise with minimal disruption to end users. For more information about how administrators can use SMS 2003 to deploy security updates, visit the SMS 2003 Security Patch Management Web site. SMS 2.0 users can also use Software Updates Service Feature Pack to help deploy security updates. For information about SMS, visit the SMS Web site. Note SMS uses the Microsoft Baseline Security Analyzer, the Microsoft Office Detection Tool, and the Enterprise Update Scan Tool to provide broad support for security bulletin update detection and deployment. Some software updates may not be detected by these tools. Administrators can use the inventory capabilities of the SMS in these cases to target updates to specific systems. For more information about this procedure, visit the following Web site. Some security updates require administrative rights following a restart of the system. Administrators can use the Elevated Rights Deployment Tool (available in the SMS 2003 Administration Feature Pack and in the SMS 2.0 Administration Feature Pack) to install these updates. 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 (November 14, 2006): Bulletin published. • V1.1 (October 24, 2007): Bulletin revised to include MS06-065 as a bulletin that is replaced by this bulletin. [***** End Microsoft Security Bulletin MS06-067 (922760) *****] _______________________________________________________________________________ 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-030: PHP Security Update R-031: Apache mod_tcl Module Contains a Format String Error R-032: Firefox Crashes with Evidence of Memory Corruption R-033: RSA Signature Forgery (variant) R-034: Running Script can be recompiled R-035: Multiple Vulnerabilities in Cisco Secure Desktop R-036: php4 Several Vulnerabilities R-037: Wireshark Security Update R-038: HP Tru64 UNIX POSIX Threads R-039: Vulnerabilities in Client Service for NetWare