Microsoft Security Bulletin MS04-026
Vulnerability in Exchange Server 5.5 Outlook Web Access Could Allow Cross-Site Scripting and Spoofing Attacks (842436)
Issued: August 10, 2004
Who should read this document: System administrators who have servers running Microsoft® Exchange Server 5.5 Outlook® Web Access
Impact of Vulnerability: Remote Code Execution
Maximum Severity Rating: Moderate
Recommendation: Customers should consider applying the security update.
Security Update Replacement: This update replaces the security update that is provided in Microsoft Security Bulletin MS03-047.
Caveats: Customers who have customized any of the Active Server Pages (ASP) pages that are listed in the File Information section in this document should back up those files before they apply this update because those ASPs will be overwritten when the update is applied. Any customizations would then have to be reapplied to the new ASP pages.
Version Requirements for Dependent Components for This Update:
To install successfully, this update requires that the Microsoft Outlook Web Access server have either: Internet Explorer 5.01 Service Pack 3 (SP3) installed when using Windows 2000 SP3; Internet Explorer 5.01 SP4 installed when using Windows 2000 SP4; or Internet Explorer 6 SP1installed when using other supported operating systems.
Version Recommendations for Dependent Components on the Outlook Web Access Server:
At the time of this writing, the following versions are recommended for dependent components on the Outlook Web Access server:
- Microsoft Internet Information Services (IIS):
- IIS 4.0 on Windows NT 4.0 SP6
- IIS 5.0 on Windows 2000 SP3 or later
- Microsoft Internet Explorer:
- Internet Explorer 6.0
Tested Software and Security Update Download Locations:
- Microsoft Exchange Server 5.5 SP4
- Microsoft Exchange 2000 Server
- Microsoft Exchange Server 2003
- Outlook Web Access - 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. Support for Outlook Web Access for Exchange Server 5.0 has ended.
Microsoft thanks the following for working with us to help protect customers:
- Amit Klein of Sanctum Inc. for reporting the Cross-site Scripting and Spoofing Vulnerability (CAN-2004-0203).
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.
- 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.
- 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.
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.
- V1.0 (August 10, 2004): Bulletin published