Secunia Research: My Firewall Plus Privilege Escalation Vulnerability

====================================================================== 

                     Secunia Research 21/11/2006

      - My Firewall Plus Privilege Escalation Vulnerability -

====================================================================== 
Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

====================================================================== 
1) Affected Software 

My Firewall Plus 5.0 Build 1119.

NOTE: Other versions may also be affected.

====================================================================== 
2) Severity 

Rating: Less critical
Impact: Privilege Escalation
Where:  Local System

====================================================================== 
3) Vendor's Description of Software 

"Corporate strength firewall for your personal PC".

====================================================================== 
4) Description of Vulnerability

Secunia Research has discovered a vulnerability in My Firewall Plus,
which can be exploited by malicious, local users to gain escalated
privileges.

The vulnerability is caused due to the application windows running
with SYSTEM privileges and the application not checking if 
explorer.exe is running before performing certain actions. This can be
exploited to launch iexplore.exe with SYSTEM privileges by terminating
explorer.exe and then use the "Test Your Firewall" functionality.

Successful exploitation allows execution of arbitrary commands with
SYSTEM privileges.

====================================================================== 
5) Solution 

Enable the password protection to reduce the risk.

====================================================================== 
6) Time Table 

03/08/2006 - Vendor notified.
03/08/2006 - Vendor response.
16/08/2006 - Vendor reminder sent.
11/10/2006 - Vendor reminder sent.
21/11/2006 - Public disclosure.

====================================================================== 
7) Credits 

Discovered by Secunia Research.

====================================================================== 
8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2006-3973 for the vulnerability.

====================================================================== 
9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://corporate.secunia.com/

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private 
individuals, who are interested in or concerned about IT-security.

http://secunia.com/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the 
security and reliability of software in general:

http://corporate.secunia.com/secunia_research/33/

Secunia regularly hires new skilled team members. Check the URL below to
see currently vacant positions:

http://secunia.com/secunia_vacancies/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/secunia_security_advisories/

====================================================================== 
10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2006-59/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

======================================================================