Microsoft Security Bulletin MS07-055 - Critical Vulnerability in Kodak Image Viewer Could Allow Remote Code Execution (923810)

Microsoft Security Bulletin MS07-055 - Critical
Vulnerability in Kodak Image Viewer Could Allow Remote Code Execution (923810)
Published: October 9, 2007

Version: 1.0
General Information
Executive Summary

This critical security update resolves a privately reported vulnerability. A remote code execution vulnerability exists in the way that the Kodak Image Viewer, formerly known as Wang Image Viewer, handles specially crafted images files. The vulnerability could allow an attacker to remotely execute code on the affected system. 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.

This vulnerability exists only on systems running Windows 2000. However, systems running supported editions of Windows XP and Windows Server 2003 may also be affected if upgraded from Windows 2000. This is a critical security update for Windows 2000 Service Pack 4, Windows XP Service Pack 2, and supported 32-bit editions of Windows Server 2003. For more information, see the subsection, Affected and Non-Affected Software, in this section.

This security update addresses the vulnerability by deprecating file types that are no longer supported as well as by improving the way that the Kodak image viewer handles specially crafted file types. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

Recommendation. Microsoft recommends that customers apply the update immediately.

Known Issues. None.
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Affected and Non-Affected Software

The software listed here have been tested to determine which versions or editions are affected. Other versions or editions are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, visit Microsoft Support Lifecycle.

Affected Software
Operating System Maximum Security Impact Aggregate Severity Rating Bulletins Replaced by This Update

Microsoft Windows 2000 Service Pack 4

Remote Code Execution

Critical

None

Windows XP Service Pack 2

Remote Code Execution

Critical

None

Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2

Remote Code Execution

Critical

None

Note Supported editions of Windows XP and Windows Server 2003 are not vulnerable unless upgraded from Windows 2000.

Non-Affected Software
Operating System

Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2

Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems

Windows Vista

Windows Vista x64 Edition
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Frequently Asked Questions (FAQ) Related to This Security Update

I am running Windows XP or Windows Server 2003 but do not have Kodak image viewer installed, am I vulnerable?
No, initial or full installations of Windows XP and Windows 2003 are not vulnerable. Systems running Windows XP and Windows Server 2003 are only vulnerable if they were upgraded from Windows 2000.

I am using an older release of the software discussed in this security bulletin. What should I do?
The affected software listed in this bulletin have been tested to determine which releases are affected. Other releases are past their support life cycle. To determine the support life cycle for your software release, visit Microsoft Support Lifecycle.

It should be a priority for customers who have older releases of the software to migrate to supported releases to prevent potential exposure to vulnerabilities. For more information about the Windows Product Lifecycle, visit the following Microsoft Support Lifecycle. For more information about the extended security update support period for these software releases, visit the Microsoft Product Support Services Web site.

Customers who require custom support for older software must contact their Microsoft account team representative, their Technical Account Manager, or the appropriate Microsoft partner representative for custom support options. Customers without an Alliance, Premier, or Authorized Contract can contact their local Microsoft sales office. For contact information, visit the Microsoft Worldwide Information Web site, select the country, and then click Go to see a list of telephone numbers. When you call, ask to speak with the local Premier Support sales manager. For more information, see the Windows Operating System Product Support Lifecycle FAQ.
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Vulnerability Information

Severity Ratings and Vulnerability Identifiers
Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected Software Kodak Image Viewer Remote Code Execution Vulnerability – CVE-2007-2217 Aggregate Severity Rating

Microsoft Windows 2000 Service Pack 4

Critical

Remote Code Execution

Critical

Windows XP Service Pack 2

Critical

Remote Code Execution

Critical

Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2

Critical

Remote Code Execution

Critical
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Kodak Image Viewer Remote Code Execution Vulnerability – CVE-2007-2217

A remote code execution vulnerability exists in the way that the Kodak Image Viewer in Windows handles specially crafted image files. An attacker could exploit the vulnerability by constructing a specially crafted image that could potentially allow remote code execution if a user visited a Web site, viewed a specially crafted e-mail message, or opened an e-mail attachment. An attacker who successfully exploited this vulnerability could take complete control of an affected system.

To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2007-2217.

Mitigating Factors for Kodak image Viewer Remote Code Execution Vulnerability – CVE-2007-2217

Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors may be helpful in your situation:
•

Systems running Windows XP and Windows Server 2003 are only vulnerable if they were upgraded from Windows 2000.
•

When ‘Use Windows Classic Folders’ is enabled for viewing files, users are protected from shell-based attacks
•

Office 2003 installs an image viewer application that takes over the file association, and is not vulnerable to this vulnerability.
•

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 convince 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.
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Workarounds for Kodak image Viewer Remote Code Execution Vulnerability – CVE-2007-2217

Workaround refers to a setting or configuration change that does not correct the underlying vulnerability but would help block known attack vectors before you apply the update. Microsoft has tested the following workarounds and states in the discussion whether a workaround reduces functionality:
•

Read e-mail messages in plain text format to help protect yourself from the HTML e-mail attack vector

You can help protect yourself against this vulnerability by changing your e-mail settings to read e-mail messages in plain text using Outlook 2002 and later, Outlook Express 6 and later, or Windows Mail. For information in Outlook, search “plain text” in Help and review “Read messages in plain text.” In Outlook Express, search “plain text” in Help and review “Reducing your risk of getting e-mail viruses.” In Windows Mail, search “plain text” in Help and review “Security and privacy in Windows Mail.”

Impact of workaround: E-mail messages that are viewed in plain text format will not contain pictures, specialized fonts, animations, or other rich content. Additionally:
•

The changes are applied to the preview pane and to open messages.
•

Pictures become attachments so that they are not lost.
•

Because the message is still in Rich Text or HTML format in the store, the object model (custom code solutions) may behave unexpectedly.
•

Modify the access control list on oieng400.dll

To modify the Access Control List (ACL) on oieng400.dll to be more restrictive, follow these steps:

Log on as a user with administrator privileges.

Click Start, click Run, type cmd, and then click OK.

Document the current ACLs that are on the file (including inheritance settings) for future reference in case you have to undo this modification. To view the ACLs, type the following:

cacls “C:\winnt\system32\oieng400.dll”

To deny the “everyone” group access to the file, type the following command at a command prompt:

cacls “C:\winnt\system32\oieng400.dll” /E /D Everyone

Impact of workaround: Kodak Image Viewer will not open.

How to undo the workaround: Restore the ACL that was documented in step 3 of this workaround.
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FAQ for Kodak image Viewer Remote Code Execution Vulnerability – CVE-2007-2217

What is the scope of the vulnerability?
This is a remote code execution vulnerability. An attacker who successfully exploited this vulnerability could take complete control of an affected system remotely. An attacker could then install programs or view, change, or delete data.

What causes the vulnerability?
The Windows Kodak image Viewer improperly parses specially crafted image files. As a result, memory may be corrupted in such a way that an attacker could execute arbitrary code in the context of the logged-on user.

What might an attacker use the vulnerability to do?
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.

How could an attacker exploit the vulnerability?
An attacker could host a specially crafted Web site that is designed to exploit this vulnerability through Internet Explorer and then convince a user to view the Web site. This can also include compromised Web sites and Web sites that accept or host user-provided content or advertisements. These Web sites 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 convince users to visit the Web site, typically by getting them to click a link in an e-mail message or in an Instant Messenger request that takes users to the attacker's Web site. It could also be possible to display specially crafted Web content by using banner advertisements or by using other methods to deliver Web content to affected systems.

What systems are primarily at risk from the vulnerability?
This vulnerability requires that a user view or open a specially crafted image file. Any system where applications use the affected Kodak image Viewer library to view or open image files are at risk.

What does the update do?
The update removes the vulnerability by improving the way that the Kodak image viewer handles specially crafted file types.

When this security bulletin was issued, had this vulnerability been publicly disclosed?
No. Microsoft received information about this vulnerability through responsible disclosure.

When this security bulletin was issued, had Microsoft received any reports that this vulnerability was being exploited?
No. Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers and had not seen any examples of proof of concept code published when this security bulletin was originally issued.

Other Information
Acknowledgments

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

Cu Fang for reporting the Kodak Image Viewer Remote Code Execution Vulnerability – CVE-2007-2217.
•

Rita Schappler of Global 360 for working with us on the Kodak Image Viewer Remote Code Execution Vulnerability – CVE-2007-2217.
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Support
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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.
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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.
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Revisions
•

V1.0 (October 9, 2007): Bulletin published.