Vulnerability Note VU#298345

Move Networks Quantum Streaming Player ActiveX stack buffer overflows

Overview

The Move Networks Quantum Streaming Player ActiveX controls contain multiple stack buffer overflows, which can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

I. Description

Move Networks Quantum Streaming Player is an ActiveX video player for use in the Internet Explorer web browser. The Quantum Streaming Player ActiveX controls contain stack buffer overflow vulnerabilities in the Buzzer() and Play() methods.

II. Impact

A remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system with privileges of the user.

III. Solution

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

Disable the Quantum Streaming Player ActiveX controls in Internet Explorer

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

{e3e02f12-2adb-478c-8742-5f0819f9f0f4}
{e473a65c-8087-49a3-affd-c5bc4a10669b}

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 these controls:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerActiveX Compatibility{e3e02f12-2adb-478c-8742-5f0819f9f0f4}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerActiveX Compatibility{e473a65c-8087-49a3-affd-c5bc4a10669b}]
"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
Move Networks, Inc.	Vulnerable	4-Sep-2007

References

http://www.cert.org/tech_tips/securing_browser/#Internet_Explorer
http://secunia.com/advisories/26600/

Credit

This vulnerability was discovered by Will Dormann of the CERT/CC. It was also independently discovered and publicly disclosed by Parvez Anwar.

This document was written by Will Dormann.

Other Information

Date Public	09/04/2007
Date First Published	09/04/2007 02:26:26 PM
Date Last Updated	09/21/2007
CERT Advisory
CVE Name	CVE-2007-4722
Metric	5.68
Document Revision	3