Droid4X Privilege Escalation Vulnerability -

Credits: CT-Zer0 Team

# Exploit Title: Droid4X Unquoted Service Path Privilege Escalation

# Category: local

# Vendor Homepage: http://www.droid4x.com/

# Software Link: http://dl.haima.me/download/DXDown/win/Z001/Droid4XInstaller.exe

# Tested on: Windows 7 x86/x64

1. Description

Droid4XService (Droid4XService.exe) installs as a service 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 of Concept

C:\Windows\system32>sc qc Droid4XService

[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: Droid4XService

TYPE : 110 WIN32_OWN_PROCESS (interactive)

START_TYPE : 2 AUTO_START

ERROR_CONTROL : 1 NORMAL

BINARY_PATH_NAME : C:\Program Files (x86)\Droid4X\Droid4XService.exe

LOAD_ORDER_GROUP :

TAG : 0

DISPLAY_NAME : Droid4XService

DEPENDENCIES :

SERVICE_START_NAME : LocalSystem

3. Exploit:

A successful attempt would require 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.

Vulnerability Disclosure Timeline:

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

03/10/2016 - Contact With Vendor

27/10/2016 - No Response From Vendor

09/11/2016 - Public Disclosure

Droid4X Privilege Escalation Vulnerability