Global Registration Service 1.0.0.3 - 'GREGsvc.exe' Unquoted Service Path

vendor:

Global Registration Service

by:

Emmanuel Lujan

7.2

CVSS

HIGH

Unquoted Service Path

426

CWE

Product Name: Global Registration Service

Affected Version From: 1.0.0.3

Affected Version To: 1.0.0.3

Patch Exists: NO

Related CWE: N/A

CPE: a:acer:global_registration_service:1.0.0.3

Metasploit: N/A

Other Scripts: N/A

Platforms Tested: Windows 7 Home Premium x64

2020

Global Registration Service 1.0.0.3 – ‘GREGsvc.exe’ Unquoted Service Path

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.

Mitigation:

Ensure that all services have a fully qualified path to the executable.

Source

Exploit-DB raw data:

# Exploit Title: Global Registration Service 1.0.0.3 - 'GREGsvc.exe'  Unquoted Service Path
# Discovery by: Emmanuel Lujan
# Discovery Date: 2020-11-26
# Vendor Homepage: https://www.acer.com/ac/en/US/content/home
# Tested Version: 1.0.0.3
# 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 """

GREGService                                                             GREGServ
ice                                   C:\Program Files (x86)\Acer\Registration\G
REGsvc.exe                                                Auto

# Service info:

C:\>sc qc GregService
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: GREGService
        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START  
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files (x86)\Acer\Registration\GREGsvc.exe
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : GREGService
        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.