=====================================================
# K7 TotalSecurity v15.1.0.289 - Unquoted Service Path Privilege Escalation
=====================================================
# Vendor Homepage: https://www.k7computing.com
# Date: 24 Oct 2016
# Version : 15.1.0.289
# Software Link: https://www.k7computing.com/eng/downloads
# Tested on: Windows 7 Ultimate SP1 (EN)
# Author: Heliand Dema
# Contact: heliand@cyber.al
=====================================================
 
K7 TotalSecurity installs several services called 'K7CrvSvc' ,
'K7EmlPxy' , 'K7RTScan' , 'K7FWSrvc' , 'K7TSMngr' , 'K7PSSrvc' ,
'K7SpmSrc'  with an unquoted service path running with SYSTEM privileges.
This could potentially allow an authorized but non-privileged local user
to execute arbitrary code with elevated privileges on the system.
 
 
C:\Users\helik>sc qc K7CrvSvc
[SC] QueryServiceConfig SUCCESS
 
SERVICE_NAME: K7CrvSvc
        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files\K7
Computing\K7TSecurity\K7CrvSvc.exe
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : K7Carnivore Service
        DEPENDENCIES       :
        SERVICE_START_NAME : LocalSystem
 
 
C:\Users\helik>sc qc K7EmlPxy
[SC] QueryServiceConfig SUCCESS
 
SERVICE_NAME: K7EmlPxy
        TYPE               : 110  WIN32_OWN_PROCESS (interactive)
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files\K7
Computing\K7TSecurity\K7EmlPxy.exe
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : K7Computng - EMail Proxy Server
        DEPENDENCIES       : K7TSMngr
                           : K7FWHlpr
        SERVICE_START_NAME : LocalSystem
 
 
C:\Users\helik>sc qc K7RTScan
[SC] QueryServiceConfig SUCCESS
 
SERVICE_NAME: K7RTScan
        TYPE               : 110  WIN32_OWN_PROCESS (interactive)
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files\K7
Computing\K7TSecurity\K7RTScan.exe
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : K7RealTime AntiVirus Services
        DEPENDENCIES       : K7TSMngr
                           : K7Sentry
        SERVICE_START_NAME : LocalSystem
 
 
C:\Users\helik>sc qc K7FWSrvc
[SC] QueryServiceConfig SUCCESS
 
SERVICE_NAME: K7FWSrvc
        TYPE               : 120  WIN32_SHARE_PROCESS (interactive)
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files\K7
Computing\K7TSecurity\K7FWSrvc.exe
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : K7Firewall Services
        DEPENDENCIES       : K7TSMngr
        SERVICE_START_NAME : LocalSystem
 
 
 
C:\Users\helik>sc qc K7TSMngr
[SC] QueryServiceConfig SUCCESS
 
SERVICE_NAME: K7TSMngr
        TYPE               : 110  WIN32_OWN_PROCESS (interactive)
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files\K7
Computing\K7TSecurity\K7TSMngr.exe
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : K7TotalSecurity Manager
        DEPENDENCIES       : RPCSS
        SERVICE_START_NAME : LocalSystem
 
 
C:\Users\helik>sc qc K7PSSrvc
[SC] QueryServiceConfig SUCCESS
 
SERVICE_NAME: K7PSSrvc
        TYPE               : 110  WIN32_OWN_PROCESS (interactive)
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files\K7
Computing\K7TSecurity\K7PSSrvc.exe
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : K7Privacy Services
        DEPENDENCIES       : K7TSMngr
        SERVICE_START_NAME : LocalSystem
 
 
C:\Users\helik>sc qc K7SpmSrc
[SC] QueryServiceConfig SUCCESS
 
SERVICE_NAME: K7SpmSrc
        TYPE               : 110  WIN32_OWN_PROCESS (interactive)
        START_TYPE         : 3   DEMAND_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files\K7
Computing\K7TSecurity\K7SpmSrc.exe
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : K7SpmSrc
        DEPENDENCIES       : RPCSS
        SERVICE_START_NAME : LocalSystem
 
 
====Proof-of-Concept====
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.