Subject: Secunia Research: Webroot Desktop Firewall Two Vulnerabilities
From: Secunia Research <vuln@secunia.com.>
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Date: Thu, 06 Oct 2005 11:53:14 +0200
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Secunia Research 06/10/2005
- Webroot Desktop Firewall Two Vulnerabilities -
Table of Contents
Affected Software....................................................1
Severity.............................................................2
Description of Vulnerability.........................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
References...........................................................7
About Secunia........................................................8
Verification.........................................................9
1) Affected Software
Webroot Desktop Firewall Version 1.3.0 Build 43.
Other versions may also be affected.
2) Severity
Rating: Less Critical
Impact: Privilege escalation
Security bypass
Where: Local system
3) Description of Vulnerability
Secunia Research has discovered two vulnerabilities in Webroot Desktop
Firewall, which can be exploited by malicious, local users to gain
escalated privileges or bypass certain security restrictions.
1) A boundary error in PWIWrapper.dll when deleting a program from the
list of "allowed" programs can cause a buffer overflow in
FirewallNTService.exe. This can be exploited by sending a specially
crafted application chain to the firewall driver via a
DeviceIoControl() command, and then removing an "allowed" program
from the firewall GUI.
Successful exploitation allows non-privileged users to execute
arbitrary code with SYSTEM privileges, but requires the the ability
to add and remove programs from the firewall's permitted application
list.
2) It is possible for non-privileged users to disable the firewall
even when password protection has been enabled, by sending specific
DeviceIoControl() commands to the firewall driver.
4) Solution
Update to version 1.3.0 build 52.
5) Time Table
20/06/2005 - Initial vendor notification.
20/08/2005 - Initial vendor reply.
06/09/2005 - Vendor provided fixed version for testing.
06/10/2005 - Public disclosure.
6) Credits
Discovered by Tan Chew Keong, Secunia Research.
7) References
Webroot:
http://support.webroot.com/ics/support/KBAnswer.asp?questionID=2332
8) About Secunia
Secunia collects, validates, assesses, and writes advisories regarding
all the latest software vulnerabilities disclosed to the public. These
advisories are gathered in a publicly available database at the
Secunia website:
http://secunia.com/
Secunia offers services to our customers enabling them to receive all
relevant vulnerability information to their specific system
configuration.
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/secunia_security_advisories/
9) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2005-10/advisory/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
