Public Vulnerability Reports

Kaspersky AntiVirus SysInfo ActiveX Control Information Disclosure Vulnerability

04.04.07

BACKGROUND

Kaspersky AntiVirus offers comprehensive protection from computer viruses and malware threats. More information can be found on the vendors site at the following URL.

http://usa.kaspersky-labs.com/products/anti-virus.php

DESCRIPTION

Remote exploitation of a information disclosure vulnerability in Kaspersky AntiVirus 6 could allow malicious websites to steal files off of a user's machine.

The vulnerability specifically lays with in the following ActiveX Control:

 ProgID: KL.SysInfo Clsid: BA61606B-258C-4021-AD27-E07A3F3B91DB File: C:Program FilesKaspersky LabKaspersky Anti-Virus 6.0AxKLSysInfo.dll Version: 5.0.5.0 

This control includes a method called "StartUploading" which allows malicious web scripts to perform an anonymous FTP transfer of any file they specify off of the victims machine.

ANALYSIS

Exploitation of this vulnerability allows attackers to steal files from a victim's computer.

This vulnerability can be triggered by a malicious website. Users would be required to have a vulnerable version of the target software installed and be lured to a malicious site.

No dialogs, warnings or user action is required to perform the transfer.

DETECTION

iDefense has confirmed the existence of this vulnerability in version 6.0 of Kaspersky AntiVirus.

WORKAROUND

Setting the kill-bit for the target ActiveX control will prevent exploitation via Internet Explorer.

VENDOR RESPONSE

Kaspersky has addressed this vulnerability by removing the vulnerable libraries upon installation of Maintenance Pack 2. More information is available from the vendor's advisory at the following URL.

http://www.kaspersky.com/technews?id=203038694

CVE INFORMATION

A Mitre Corp. Common Vulnerabilities and Exposures (CVE) number has not been assigned yet.

DISCLOSURE TIMELINE

12/12/2006 Initial vendor notification
12/12/2006 Initial vendor response
04/04/2007 Coordinated public disclosure

CREDIT

This vulnerability was reported to iDefense by Peter Vreugdenhil.

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LEGAL NOTICES

Copyright © 2007 Verisign, Inc.

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Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.