Vulnerability Note VU#848873

iseemedia / Roxio / MGI Software LPViewer ActiveX control stack buffer overflows

Overview

The iseemedia LPViewer ActiveX control contains multiple stack buffer overflows, which can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

I. Description

The iseemedia LPViewer ActiveX control, which is provided by the file LPControl.dll, is a component that was created by MGI Software. It was then acquired by Roxio, and then iseemedia after that. The LPViewer ActiveX control contains stack buffer overflows in the url(), toolbar(), and enableZoomPastMax() methods.

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 Internet Explorer (or the program using the WebBrowser control) to crash.

III. Solution

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

Disable the LPViewer ActiveX control in Internet Explorer

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

{3F0EECCE-E138-11D1-8712-0060083D83F5}

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{3F0EECCE-E138-11D1-8712-0060083D83F5}]
"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 Notified	Date Updated
iseemedia	Vulnerable	2008-08-22	2008-10-06
MGI Software	Vulnerable		2008-10-06
Roxio	Vulnerable	2007-06-18	2008-10-06

References

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

Credit

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

This document was written by Will Dormann.

Other Information

Date Public:	2008-10-06
Date First Published:	2008-10-06
Date Last Updated:	2008-10-30
CERT Advisory:
CVE-ID(s):	CVE-2008-4384
NVD-ID(s):	CVE-2008-4384
US-CERT Technical Alerts:
Metric:	1.82
Document Revision:	11