Vulnerability Note VU#649289

Retro64 / Miniclip CR64Loader ActiveX control buffer overflow

Overview

The Retro64 / Miniclip CR64Loader ActiveX control contains a buffer overflow vulnerability. This may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

I. Description

The CR64Loader Object is an ActiveX control developed by Retro64. The web sites retro64.com and miniclip.com have used this ActiveX control to provide online games. This ActiveX control, which has a CLSID of {288C5F13-7E52-4ADA-A32E-F5BF9D125F99}, contains a buffer overflow vulnerability. Although the ActiveX control is no longer in use by either retro64.com or miniclip.com, any system that has used certain pages of these web sites in the past may be vulnerable.

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

Disable the CR64Loader ActiveX control

The CR64Loader ActiveX control can be disabled by setting the kill bit for the following CLSID:

{288C5F13-7E52-4ADA-A32E-F5BF9D125F99}

More information about how to set the kill bit is available in Microsoft Support Document 240797.

Disable ActiveX

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

Systems Affected

Vendor	Status	Date Notified	Date Updated
Miniclip Limited	Vulnerable	2-Sep-2006
Retro64	Vulnerable	1-Sep-2006

References

http://support.microsoft.com/kb/240797
http://www.us-cert.gov/reading_room/securing_browser/#Internet_Explorer

Credit

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

This document was written by Will Dormann.

Other Information

Date Public:	2006-09-01
Date First Published:	2006-09-01
Date Last Updated:	2006-09-07
CERT Advisory:
CVE-ID(s):	CVE-2006-4555
NVD-ID(s):	CVE-2006-4555
US-CERT Technical Alerts:
Metric:	1.67
Document Revision:	7

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Produced 2006 by US-CERT, a government organization
Disclaimers and copyright information

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