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Category:   Application (Security)  >   Kaspersky Anti-Virus Vendors:   Kaspersky Lab
Kaspersky Anti-Virus 'AxKLSysInfo.dll' ActiveX Control Lets Remote Users View Files
SecurityTracker Alert ID:  1017871
SecurityTracker URL:
CVE Reference:   CVE-2007-1879   (Links to External Site)
Updated:  May 16 2008
Original Entry Date:  Apr 5 2007
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 6.0 prior to
Description:   A vulnerability was reported in Kaspersky Anti-Virus. A remote user can view files on the target system.

A remote user can create specially crafted HTML that, when loaded by the target user, will invoke the 'AxKLSysInfo.dll' ActiveX control to view files on the target user's system.

The 'StartUploading' method allows the HTML to access arbitrary files via anonymous FTP.

The CLSID of the vulnerable control is: BA61606B-258C-4021-AD27-E07A3F3B91DB

The vendor was notified on December 12, 2006.

Peter Vreugdenhil discovered this vulnerability. iDefense reported this vulnerability.

Impact:   A remote user can view files on the target system.
Solution:   The vendor has issued a fix that removes the ActiveX control (Maintenance Pack 2.0, build

The Kaspersky advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (Any)

Message History:   None.

 Source Message Contents

Subject:  iDefense Security Advisory 04.04.07: Kaspersky AntiVirus SysInfo

Kaspersky AntiVirus SysInfo ActiveX Control Information Disclosure

iDefense Security Advisory 04.04.07
Apr 04, 2007


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


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

  ProgID: KL.SysInfo
  Clsid: BA61606B-258C-4021-AD27-E07A3F3B91DB
  File: C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus

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.


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.


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


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


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.


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


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


This vulnerability was reported to iDefense by Peter Vreugdenhil.

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Disclaimer: The information in the advisory is believed to be accurate
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 There are no warranties with regard to this information. Neither the
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