Tuesday, May 11, 2021

DHCP Broadband 4.1.0.1503 Unquoted Service Path

# 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.

 

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Thanks for everything Templateism - You should have written the code a little more complicated