DHCP Broadband 4.1.0.1503 – ‘dhcpt.exe’ Unquoted Service Path

EXP

# Exploit Title: DHCP Broadband 4.1.0.1503 - 'dhcpt.exe' Unquoted Service Path
# Discovery by: Erick Galindo 
# Discovery Date: 2020-05-07
# Vendor Homepage: https://www.weird-solutions.com
# Software :  https://www.weird-solutions.com/download/products/dhcpbbv4_retail_x64.exe
# Tested Version: 4.1.0.1503
# Vulnerability Type: Unquoted Service Path
# Tested on OS: Windows 10 Pro  x64 es
# Step to discover Unquoted Service Path:

C:\> wmic service get name, displayname, pathname, startmode | findstr /i "Auto" | findstr /i /v "C:\Windows\\" | findstr /i  "DHCP"
DHCP Broadband 4        DHCP Broadband 4          C:\Program Files\DHCP Broadband 4\dhcpt.exe                        Auto

# Service info

C:\>sc qc "DHCP Broadband 4"
SC QueryServiceConfig CORRECTO

NOMBRE_SERVICIO: DHCP Broadband 4
        TIPO               : 10  WIN32_OWN_PROCESS
        TIPO_INICIO        : 2   AUTO_START
        CONTROL_ERROR      : 1   NORMAL
        NOMBRE_RUTA_BINARIO: C:\Program Files\DHCP Broadband 4\dhcpt.exe
        GRUPO_ORDEN_CARGA  :
        ETIQUETA           : 0
        NOMBRE_MOSTRAR     : DHCP Broadband 4
        DEPENDENCIAS       : Nsi
                           : Afd
                           : NetBT
                           : Tcpip
        NOMBRE_INICIO_SERVICIO: LocalSystem

#Exploit:

This vulnerability could permit executing code during startup or reboot with the escalated privileges.