Fortitude HTTP 1.0.4.0 - Unquoted Service Path Privilege Escalation

2016-10-05T00:00:00
ID EDB-ID:40461
Type exploitdb
Reporter Tulpa
Modified 2016-10-05T00:00:00

Description

Fortitude HTTP 1.0.4.0 - Unquoted Service Path Privilege Escalation. Local exploit for Windows platform

                                        
                                            # Exploit Title: Fortitude HTTP 1.0.4.0 Unquoted Service Path Elevation of Privilege
# Date: 05/10/2016
# Exploit Author: Tulpa
# Contact: tulpa@tulpa-security.com
# Author website: www.tulpa-security.com
# Author twitter: @tulpa_security
# Vendor Homepage: http://www.networkdls.com/
# Software Link: http://www.networkdls.com/Software/View/Fortitude_HTTP
# Version: Software Version 1.0.4.0
# Tested on: Windows 7 x86
# Shout-out to carbonated and ozzie_offsec

1. Description:

Netgear Genie installs a service called 'Fortitude HTTP' 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.

2. Proof

C:\Program Files>sc qc "Fortitude HTTP"
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: Fortitude HTTP
        TYPE               : 110 WIN32_OWN_PROCESS (interactive)
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files\NetworkDLS\Fortitude HTTP\Bin
\FortitudeSvc.exe /RunService
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : NetworkDLS Fortitude HTTP
        DEPENDENCIES       :
        SERVICE_START_NAME : LocalSystem


3. Exploit:

A successful attempt would require the local user to be able to insert their
code in the system root path undetected by the OS or other security applications
where it could potentially be executed during application startup or reboot.
If successful, the local user's code would execute with the elevated privileges
of the application.