P-173: Cumulative Security Update for Internet Explorer (890923)

[***** Start Microsoft Security Bulletin MS05-020 *****]

Microsoft Security Bulletin MS05-020
Cumulative Security Update for Internet Explorer (890923)

Issued: April 12, 2005
Version: 1.0

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 update replaces the update that is included with Microsoft Security 
Bulletin http://www.microsoft.com/technet/security/bulletin/ms05-014.mspx. That update is also a cumulative update.

Caveats: Microsoft Knowledge Base Article 890923 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 890923.

This update does include hotfixes that have been released since the release of MS04-004 or MS04-025 but they 
will only be installed on systems that need them. Customers who have received hotfixes from Microsoft or from 
their support providers since the release of MS04-004 or MS04-025 should review the FAQ “I have received a 
hotfix from Microsoft or my support provider since the release of MS04-004. Is that hotfix included in this 
security update?” in the FAQ section for this update to determine how to ensure that the necessary hotfixes 
are installed. Microsoft Knowledge Base Article 890923 also documents this in more detail.

Tested Software and Security Update Download Locations:

Affected Software: 

• Microsoft Windows 2000 Service Pack 3 and Microsoft Windows 2000 Service Pack 4
 
• Microsoft Windows XP Service Pack 1 and Microsoft Windows XP Service Pack 2
 
• Microsoft Windows XP 64-Bit Edition Service Pack 1 (Itanium)
 
• Microsoft Windows XP 64-Bit Edition Version 2003 (Itanium)
 
• Microsoft Windows Server 2003
 
• Microsoft Windows Server 2003 for Itanium-based Systems
 
• Microsoft Windows 98, Microsoft Windows 98 Second Edition (SE), and Microsoft Windows Millennium Edition 
  (ME) Tested Microsoft Windows Components:
 

Affected Components:

• Internet Explorer 5.01 Service Pack 3 on Microsoft Windows 2000 Service Pack 3: Download the update
 
• Internet Explorer 5.01 Service Pack 4 on Microsoft Windows 2000 Service Pack 4: Download the update
 
• Internet Explorer 5.5 Service Pack 2 on Microsoft Windows Millennium Edition – Review the FAQ section of 
  this bulletin for details about this version.
 
• Internet Explorer 6 Service Pack 1 on Microsoft Windows 2000 Service Pack 3, on Microsoft Windows 2000 
  Service Pack 4, or on Microsoft Windows XP Service Pack 1: Download the update
 
• Internet Explorer 6 Service Pack 1 on Microsoft Windows 98, on Microsoft Windows 98 SE, or on Microsoft 
  Windows Millennium Edition – Review the FAQ section of this bulletin for details about this version.
 
• Internet Explorer 6 Service Pack 1 for Microsoft Windows XP 64-Bit Edition Service Pack 1 (Itanium): 
  Download the update
 
• Internet Explorer 6 for Microsoft Windows Server 2003: Download the update
 
• Internet Explorer 6 for Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft Windows XP 
  64-Bit Edition Version 2003 (Itanium): Download the update
 
• Internet Explorer 6 for Microsoft Windows XP Service Pack 2: Download the update
 

Non-Affected Software: 

• Microsoft Windows Server 2003 Service Pack 1
 
• Microsoft Windows Server 2003 with SP1 for Itanium-based Systems
 
• Microsoft Windows Server 2003 x64 Edition
 
• Microsoft Windows XP Professional x64 Edition
 

Top of section
• 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.
 
General Information
 Executive Summary 

Executive Summary:

This update resolves several newly-discovered, privately reported vulnerabilities. Each vulnerability is 
documented in this bulletin in its own “Vulnerability Details” section of this bulletin.

If a user is logged on with administrative user rights, an attacker who successfully exploited any 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.

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 severity ratings for non x86 operating system versions map to the x86 operating versions as follows:

• The Internet Explorer 6 Service Pack 1 for Microsoft Windows XP 64-Bit Edition Service Pack 1 (Itanium) 
  severity rating is the same as Internet Explorer 6 Service Pack 1 (All supported operating system versions 
  earlier than Windows Server 2003) severity rating.
 
• The Internet Explorer 6 Service Pack 1 for Microsoft Windows XP 64-Bit Edition Version 2003 (Itanium) 
  severity rating is the same as Internet Explorer 6 Service Pack 1 (All supported operating system versions 
  earlier than Windows Server 2003) severity rating.
 
• The Internet Explorer 6 Service Pack 1 for Microsoft Windows Server 2003 for Itanium-based Systems severity 
  rating is the same as Internet Explorer 6 for Windows Server 2003 severity rating.
 
Security Update Information
Affected Software:

For additional information about how to determine which version of Internet Explorer you are running, see 
Microsoft Knowledge Base Article 164539. For information about the specific security update for your affected 
software, click the appropriate link:

Internet Explorer 6 for Windows Server 2003 (all versions) and for Windows XP 64-Bit Edition, Version 2003
Internet Explorer 6 for Windows XP Service Pack 2
Internet Explorer 6 Service Pack 1 for Windows XP Service Pack 1 and Windows 2000 (all versions)
Internet Explorer 5.01 for Windows 2000 (all versions)


Acknowledgments

Microsoft thanks the following for working with us to help protect customers:

• Berend-Jan Wever working with iDEFENSE for reporting the DHTML Object Memory Corruption Vulnerability 
  (CAN-2005-0553).
 
• 3APA3A and axle@bytefall working with iDEFENSE for reporting the URL Parsing Memory Corruption 
  Vulnerability (CAN-2005-0554).
 
• Andres Tarasco of SIA Group for reporting the Content Advisor Memory Corruption Vulnerability 
  (CAN-2005-0555).
 

Obtaining Other Security Updates:

Updates for other security issues are available at the following locations:

• Security updates are available in 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 Windows 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.


• Microsoft Software Update Services


• Microsoft Baseline Security Analyzer (MBSA)


• Windows 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 this security update with Software Update Services, visit the
Software 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
to 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 and the Microsoft Office Detection 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, see 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 (April 12, 2005): Bulletin published
 


[***** End Microsoft Security Bulletin MS05-020 *****]

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CIAC wishes to acknowledge the contributions of Microsoft for the information contained in this bulletin.

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DOE-CIRC can be contacted at:

    Voice:          +1 866-941-2472 (7 x 24)
    E-mail:          doecirc@doecirc.energy.gov
    World Wide Web:  http://www.doecirc.energy.gov/

[***** End Microsoft Security Bulletin MS05-020 *****] _______________________________________________________________________________ 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) P-163: Kerberos 5 Telnet Client Buffer Overflow P-164: MySQL Security Update P-165: libXpm Integer Overflow Flaw P-167: cURL Security Update P-166: Sybase Security Issues in ASE 12.5.3 and Earlier P-168: Mozilla Security Update P-169: Cisco Security Advisory: Vulnerabilities in the Internet Key Exchange Xauth Implementation P-170: Cisco Security Advisory: Vulnerabilities in Cisco IOS Secure Shell Server P-171: SGI Advanced Linux Environment 3 Security Update #33 P-172: SGI IRIX gr_osview File Overwrite Vulnerabilities