Backup manager module 3.0.0.99 ischedulesvc.exe unquoted service path Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2021-05-20 | Type : local | Platform : windows

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# Exploit Title: Acer Backup Manager Module 3.0.0.99 - 'IScheduleSvc.exe' Unquoted Service Path
# Discovery by: Emmanuel Lujan
# Discovery Date: 2021-05-19
# Vendor Homepage: https://www.acer.com/ac/en/US/content/home
# Tested Version: 3.0.0.99
# Vulnerability Type: Unquoted Service Path
# Tested on OS: Windows 7 Home Premium x64

# Step to discover Unquoted Service Path:

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

NTI IScheduleSvc NTI ISch
eduleSvc C:\Program Files (x86)\NTI\Acer Backup Man
ager\IScheduleSvc.exe Auto


# Service info:

C:\>sc qc "NTI IScheduleSvc"
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: NTI IScheduleSvc
TYPE : 110 WIN32_OWN_PROCESS <interactive>
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files (x86)\Acer Backup Manager\IScheduleSvc.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : NTI IScheduleSvc
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem

#Exploit:

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.