O-191: Microsoft Cumulative Security Update for Internet Explorer (867801) Privacy and Legal Notice

CIAC INFORMATION BULLETIN

O-191: Microsoft Cumulative Security Update for Internet Explorer (867801)

[Microsoft Security Bulletin MS04-025]

July 30, 2004 17:00 GMT
[REVISED Aug 2 2004]

PROBLEM: There are 3 vulnerabilities in Microsoft Internet Explorer:
1) A navigation method cross-domain vulnerability;
2) A malformed BMP file buffer overrun vulnerability; and
3) A malformed GIF file double free vulnerability.
PLATFORM: Microsoft Windows NTฎ Workstation 4.0 Service Pack 6a
Microsoft Windows NT Server 4.0 Service Pack 6a
Microsoft Windows NT Server 4.0 Terminal Server Edition Service Pack 6
Microsoft Windows 2000 Service Pack 2, Microsoft Windows 2000 Service Pack 3, Microsoft Windows 2000 Service Pack 4
Microsoft Windows XP and Microsoft Windows XP Service Pack 1
Microsoft Windows XP 64-Bit Edition Service Pack 1
Microsoft Windows XP 64-Bit Edition Version 2003
Microsoft Windows Serverฎ 2003
Microsoft Windows Server 2003 64-Bit Edition
Microsoft Windows 98, Microsoft Windows 98 Second Edition (SE), and Microsoft Windows Millennium Edition (Me) – Review the FAQ section of this bulletin for details about these operating systems.

SOFTWARE: Internet Explorer 5.01 Service Pack 2
Internet Explorer 5.01 Service Pack 3
Internet Explorer 5.01 Service Pack 4
Internet Explorer 5.5 Service Pack 2
Internet Explorer 6
Internet Explorer 6 Service Pack 1
Internet Explorer 6 Service Pack 1 (64-Bit Edition)
Internet Explorer 6 for Windows Server 2003
Internet Explorer 6 for Windows Server 2003 (64-Bit Edition)

DAMAGE: An attacker could take complete control of an affected system, including installing programs; viewing, changing, or deleting data; or creating new accounts with full privileges.
SOLUTION: Apply the update immediately.

VULNERABILITY
ASSESSMENT:
The risk is MEDIUM. A remote attacker may execute code with privileges of the logged on user, by hosting a malicious website and enticing a user to view the site or access the site via an HTML email message.

LINKS:  
  CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/o-191.shtml
  ORIGINAL BULLETIN: Microsoft Security Bulletin MS04-025
http://www.microsoft.com/technet/security/bulletin/ms04-025.mspx
  CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=
CAN-2004-0549 CAN-2004-0566 CAN-2003-1048

REVISION HISTORY:
8/2/04 - On Aug. 1, 2004, Microsoft revised the Caveats section to reflect 
         availability of a new version of the update for Windows XP customers 
         running Windows Update Version 5.
   
[***** Start Microsoft Security Bulletin MS04-025  *****]

Microsoft Security Bulletin MS04-025
Cumulative Security Update for Internet Explorer (867801)

Issued: July 30, 2004
Version: 1.0

Summary
Who should read this document: Customers who use Microsoftฎ Internet Explorer

Impact of Vulnerability:  Remote Code Execution

Maximum Severity Rating: Critical

Recommendation: Customers should apply the update immediately.

Security Update Replacement: This update replaces the one that is provided in Microsoft Security 
Bulletin MS04-004, which is itself a cumulative update.

Caveats: 
 
Subsequent to the release of this security bulletin, Microsoft was made aware 
that the update provided for Windows XP customers running the new version of 
Windows Update, Windows Update Version 5, did not contain the final release 
code for the vulnerabilities addressed in the security bulletin. Microsoft 
has corrected the update and is re-releasing this bulletin to advise of the 
availability of a revised update available to Windows Update Version 5 customers. 
Customers who are utilizing Windows Update Version 4, the vast majority of 
customers, are not affected by this revision. 

This update does not include hotfixes for Internet Explorer provided since the release of 
MS04-004. Customers who have received hotfixes from Microsoft or their support providers since the release 
of MS04-004 should review the FAQ section for this update to determine how this update might impact their 
operating systems. 

Tested Software and Security Update Download Locations:

Affected Software: 

• Microsoft Windows NTฎ Workstation 4.0 Service Pack 6a
 
• Microsoft Windows NT Server 4.0 Service Pack 6a
 
• Microsoft Windows NT Server 4.0 Terminal Server Edition Service Pack 6
 
• Microsoft Windows 2000 Service Pack 2, Microsoft Windows 2000 Service Pack 3, Microsoft Windows 2000 S
  ervice Pack 4
 
• Microsoft Windows XP and Microsoft Windows XP Service Pack 1
 
• Microsoft Windows XP 64-Bit Edition Service Pack 1
 
• Microsoft Windows XP 64-Bit Edition Version 2003
 
• Microsoft Windows Serverฎ 2003
 
• Microsoft Windows Server 2003 64-Bit Edition
 
• Microsoft Windows 98, Microsoft Windows 98 Second Edition (SE), and Microsoft Windows Millennium Edition 
  (Me) – Review the FAQ section of this bulletin for details about these operating systems.
 

Tested Microsoft Windows Components:

Affected Components:

• Internet Explorer 5.01 Service Pack 2: Download the update.
 
• Internet Explorer 5.01 Service Pack 3: Download the update. 
 
• Internet Explorer 5.01 Service Pack 4: Download the update.
 
• Internet Explorer 5.5 Service Pack 2: Download the update. 
 
• Internet Explorer 6: Download the update. 
 
• Internet Explorer 6 Service Pack 1: Download the update.
 
• Internet Explorer 6 Service Pack 1 (64-Bit Edition): Download the update.
 
• Internet Explorer 6 for Windows Server 2003: Download the update. 
 
• Internet Explorer 6 for Windows Server 2003 (64-Bit Edition): Download the update.
 

The software in this list has been tested to determine if the versions are affected. Other versions either 
no longer include security update support or may not be affected. To determine the support lifecycle for 
your product and version, visit the following Microsoft Support Lifecycle Web site.


General Information
 Executive Summary 

Executive Summary:

This update resolves several newly discovered public vulnerabilities. Each vulnerability is documented in 
this bulletin in its own Vulnerability Details section.

If a user is logged on with administrative privileges, an attacker who successfully exploited the most 
severe of these vulnerabilities could take complete control of an affected system, including installing 
programs; viewing, changing, or deleting data; or creating new accounts with full privileges. Users whose 
accounts are configured to have fewer privileges on the system would be at less risk than users who operate 
with administrative privileges.

Microsoft recommends that customers apply the update immediately.

Severity Ratings and Vulnerability Identifiers:

Vulnerability IdentifiersImpact of VulnerabilityInternet Explorer 5.01 SP2, SP3, SP4Internet Explorer 5.5 SP2Internet Explorer 6Internet Explorer 6 SP1 (All versions earlier than Windows Server 2003)Internet Explorer 6 for Windows Server 2003 (including 64-bit Edition)

Navigation Method Cross-Domain Vulnerability - CAN-2004-0549

Remote Code Execution

None

Critical

Critical

Critical

Moderate

Malformed BMP File Buffer Overrun Vulnerability

CAN-2004-0566

Remote Code Execution

Critical

Critical

Critical

None

None

Malformed GIF File Double Free Vulnerability - CAN-2003-1048

Remote Code Execution

Critical

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.

Top of section
 Frequently asked questions (FAQ) related to this security update 


 Vulnerability Details 


 Security Update Information 

Installation Platforms and Prerequisites:

For additional information about how to determine which version of Internet Explorer you are running, click 
the following article number to view the article in the Microsoft Knowledge Base:

164539 How to Determine Which Version of Internet Explorer Is Installed

For information about the specific security update for your platform, click the appropriate link:





Top of section
Obtaining Other Security Updates:

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

• Security updates are available from the Microsoft Download Center: You can find them most easily by doing 
  a keyword search for "security_patch".
 
• Updates for consumer platforms are available from 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, see 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 (July 30, 2004) Bulletin published
• V2.0 (August 1, 2004) Bulletin updated to reflect availability of a new version 
of the update for Windows XP customers running Windows Update Version 5. 



[***** End Microsoft Security Bulletin MS04-025  *****]


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