Vulnerability Note VU#574401

Broderbund Expressit 3DGreetings Player ActiveX control buffer overflows

Overview

The Broderbund Expressit 3DGreetings Player ActiveX control contains multiple buffer overflows, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

I. Description

The 3DGreetings Player is an ActiveX control that displays 3D greeting cards. This control, originally provided by Expressit.com, is now owned by Broderbund. The 3DGreetings Player ActiveX control contains multiple buffer overflows.

II. Impact

By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), an attacker may be able to execute arbitrary code with the privileges of the user. The attacker could also cause the web browser to crash.

III. Solution

We are currently unaware of a practical solution to this problem. Please consider the following workarounds

Disable the 3DGreetings Player ActiveX control in Internet Explorer

The vulnerable ActiveX control can be disabled in Internet Explorer by setting the kill bit for the following CLSID:

{0C3F7D74-ADA5-4976-8908-A8189590DAFA}

More information about how to set the kill bit is available in Microsoft Support Document 240797. Alternatively, the following text can be saved as a .REG file and imported to set the kill bit for this control:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerActiveX Compatibility{0C3F7D74-ADA5-4976-8908-A8189590DAFA}]
"Compatibility Flags"=dword:00000400

Disable ActiveX

Disabling ActiveX controls in the Internet Zone (or any zone used by an attacker) appears to prevent exploitation of this and other ActiveX vulnerabilities. Instructions for disabling ActiveX in the Internet Zone can be found in the "Securing Your Web Browser" document.

Systems Affected

Vendor	Status	Date Updated
Broderbund at Riverdeep Interactive Learning Limited	Vulnerable	5-Sep-2007

References

http://www.cert.org/tech_tips/securing_browser/#Internet_Explorer
http://support.microsoft.com/kb/240797
http://secunia.com/advisories/26717/

Credit

This vulnerability was reported by Will Dormann of the CERT/CC.

This document was written by Will Dormann.

Other Information

Date Public	09/05/2007
Date First Published	09/05/2007 02:57:07 PM
Date Last Updated	09/25/2007
CERT Advisory
CVE Name	CVE-2007-4472
Metric	1.51
Document Revision	6