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Microsoft Windows Explorer vulnerable to script injection via the Web View DLL

Vulnerability Note VU#668916

Original Release Date: 2005-05-10 | Last Revised: 2005-05-13

Overview

Windows Explorer is vulnerable to script injection via the Web View DLL. Exploitation of this vulnerability may lead to execution of arbitrary code.

Description

Windows Explorer uses the Web View DLL (webvw.dll) to display information about a selected file/folder (file size, author, version, creation date, etc.) within an HTML based preview pane. A vulnerable situation may arise when the webvw.dll is supplied a specially crafted author name embedded in the metadata of a file/folder. If the author name resembles an email address, the webvw.dll will create an email hyperlink to display in the preview pane. Please note that the preview pane and web view is enabled by default. Any application that uses webvw.dll may be vulnerable.

This issue affects Windows Explorer on the following platforms:

    • Windows 2000 Professional
    • Windows 2000 Server
    • Windows 2000 Advanced Server

For a full list of affected platforms, please reference Microsoft Security Bulletin MS05-024.

Impact

If a remote attacker can persuade a user to select a specially crafted file with Windows Explorer, that attacker may be able to execute arbitrary code with the privileges of the compromised user.

Solution

Microsoft has released a patch in Security Bulletin MS05-024 to address this issue.


Disable Web View

Disabling the Web View feature will greatly reduce the chances of exploitation. Web View can be disabled by switching to the "Use Windows classic folders" option within the Folder Options of Windows Explorer.

Vendor Information

668916
 
Affected   Unknown   Unaffected

Microsoft Corporation

Updated:  May 10, 2005

Status

  Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Microsoft has released a patch in Security Bulletin MS05-024 to address this issue.

If you have feedback, comments, or additional information about this vulnerability, please send us email.


CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A

References

Acknowledgements

This vulnerability was reported in a GreyMagic security advisory and is resolved by Microsoft Security Bulletin MS05-024

This document was written by Jeff Gennari and Ken MacInnis and was based on information provided in the security bulletins mentioned above.

Other Information

CVE IDs: CVE-2005-1191
Severity Metric: 19.28
Date Public: 2005-04-19
Date First Published: 2005-05-10
Date Last Updated: 2005-05-13 16:43 UTC
Document Revision: 57

Sponsored by the Department of Homeland Security Office of Cybersecurity and Communications.