__________________________________________________________

The U.S. Department of Energy
Computer Incident Advisory Capability
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INFORMATION BULLETIN

Vulnerability in Microsoft Exchange Server Running Outlook Web Access
[Microsoft Security Bulletin MS06-029 (912442)]

June 14, 2006 19:00 GMT Number Q-225
______________________________________________________________________________
PROBLEM: Outlook Web Access can incorrectly filter script under certain
circumstances within an e-mail message. A malicious script can
run in the security context of the user on the client, and take
any action on the user's computer that the Web site is
authorized to take.
PLATFORM: Microsoft Exchange 2000 Server Pack 3 with the August 2004
Exchange 2000 Server Post-Service Pack 3 Update Rollup
Microsoft Exchange Server 2003 Service Pack 1
Microsoft Exchange Server 2003 Service Pack 2
DAMAGE: The malicious script could take any action including monitoring
the user’s Web session and forwarding information to a third
party, running other code on the user's system, and reading or
writing cookies.
SOLUTION: Apply the security updates.
______________________________________________________________________________
VULNERABILITY The risk is MEDIUM. A remote attacker who exploits this
ASSESSMENT: vulnerability may be able to run a malicious script in the
security context of the user on the client, and take any action
on the user's computer that the Web site is authorized to take.
______________________________________________________________________________
LINKS:
CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/q-225.shtml
ORIGINAL BULLETIN: http://www.microsoft.com/technet/security/Bulletin/MS06-029.mspx
CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=
CVE-2006-1193
______________________________________________________________________________
[***** Start Microsoft Security Bulletin MS06-029 (912442) *****]

Microsoft Security Bulletin MS06-029
Vulnerability in Microsoft Exchange Server Running Outlook Web Access Could Allow Script Injection (912442)
Published: June 13, 2006

Version: 1.0
Summary

Who should read this document: Customers who use Microsoft Exchange Server running Microsoft Outlook Web Access

Impact of Vulnerability: Remote Code Execution

Maximum Severity Rating: Important

Recommendation: Customers should consider applying the security update.

Security Update Replacement: None

Caveats: Microsoft Knowledge Base Article 912442 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 912442.

Tested Software and Security Update Download Locations:

Affected Software:
•

Microsoft Exchange 2000 Server Pack 3 with the August 2004 Exchange 2000 Server Post-Service Pack 3 Update
Rollup — Download the update (KB912442)
•

Microsoft Exchange Server 2003 Service Pack 1 — Download the update (KB912442)
•

Microsoft Exchange Server 2003 Service Pack 2 — Download the update (KB912442)

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.

For more information about the August 2004 Exchange 2000 Server Post-Service Pack 3 Update Rollup see Microsoft
Knowledge Base Article 870540.
Top of sectionTop of section
General Information

Executive Summary:

This update resolves a newly discovered, privately reported vulnerability. The vulnerability is documented in
the “Vulnerability Details” section of this bulletin. An attacker who successfully exploited the vulnerability
could perform script injection attacks.

We recommend that customers consider applying the security update.

Severity Ratings and Vulnerability Identifiers:
Vulnerability Identifiers Impact of Vulnerability Microsoft Exchange 2000 Server Microsoft Exchange Server
2003 Service Pack 1 and Exchange Server 2003 Service Pack 2

Microsoft Exchange Server when running Outlook Web Access Vulnerability - CVE-2006-1193

Remote Code Execution

Important

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.

Microsoft Exchange Server when running Outlook Web Access Vulnerability - CVE- CVE-2006-1193

A script injection vulnerability exists in Exchange Server running Outlook Web Access (OWA). An attacker could
exploit the vulnerability by constructing an e-mail message with a specially crafted script. If this specially
crafted script is run, it would execute in the security context of the user on the client. Attempts to exploit
this vulnerability require user interaction.

Mitigations for Microsoft Exchange Server When Running Outlook Web Access Vulnerability - CVE- CVE-2006-1193:
•

To be affected, a user would have to use Outlook Web Access to read a specially crafted e-mail message.

Acknowledgments

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

Daniel Fabian of SEC Consult for reporting the Microsoft Exchange Server when running Outlook Web Access
Vulnerability - CVE-2006-1193

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.
•

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
Scanning 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 (June 13, 2006): Bulletin published.

[***** End Microsoft Security Bulletin MS06-029 (912442) *****]
_______________________________________________________________________________

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
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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
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