Vulnerability Note VU#171449

Callisto PhotoParade Player PhPInfo ActiveX control buffer overflow

Overview

The Callisto PhotoParade Player PhPInfo ActiveX control contains a buffer overflow, which can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

I. Description

Callisto PhotoParade Player includes an ActiveX control called PhPinfo. The ActiveX control is provided by the file PhPCtrl.dll. The FileVersionOf property of this ActiveX control is vulnerable to a buffer overflow.

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 Callisto PhotoParade Player PhPInfo ActiveX control in Internet Explorer

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

{0115A685-ED24-4F7B-A08E-3BD15D84E668}

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_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{0115A685-ED24-4F7B-A08E-3BD15D84E668}]

"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
Callisto Corporation	Vulnerable	16-Apr-2007

References

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

Credit

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

This document was written by Will Dormann.

Other Information

Date Public:	2007-09-12
Date First Published:	2007-09-12
Date Last Updated:	2007-09-12
CERT Advisory:
CVE-ID(s):	CVE-2007-1688
NVD-ID(s):	CVE-2007-1688
US-CERT Technical Alerts:
Metric:	2.60
Document Revision:	8

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Produced 2007 by US-CERT, a government organization
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