Vembu StoreGrid 4.0 Privilege Escalation

2016-10-20T00:00:00
ID PACKETSTORM:139266
Type packetstorm
Reporter Joey Lane
Modified 2016-10-20T00:00:00

Description

                                        
                                            `# Exploit Title: Vembu StoreGrid - Unquoted Service Path Privilege Escalation  
# Date: 10/19/2016  
# Exploit Author: Joey Lane  
# Version: 4.0  
# Tested on: Windows Server 2012  
  
StoreGrid is a re-brandable backup solution, which can install 2 services with unquoted service paths.  
This enables a local privilege escalation vulnerability.   
To exploit this vulnerability, a local attacker can insert an executable file in the path of either service.  
Rebooting the system or restarting the service will run the malicious executable with elevated privileges.  
  
This was tested on version 4.0, but other versions may be affected as well.  
  
  
---------------------------------------------------------------------------  
  
C:\>sc qc RemoteBackup  
  
[SC] QueryServiceConfig SUCCESS  
  
  
  
SERVICE_NAME: RemoteBackup  
  
TYPE : 10 WIN32_OWN_PROCESS  
  
START_TYPE : 2 AUTO_START  
  
ERROR_CONTROL : 0 IGNORE  
  
BINARY_PATH_NAME : C:\Program Files\MSP\RemoteBackup\bin\StoreGrid.exe  
  
  
LOAD_ORDER_GROUP :  
  
TAG : 0  
  
DISPLAY_NAME : RemoteBackup  
  
DEPENDENCIES :  
  
SERVICE_START_NAME : LocalSystem  
  
  
C:\>sc qc RemoteBackup_webServer  
  
[SC] QueryServiceConfig SUCCESS  
  
  
  
SERVICE_NAME: RemoteBackup_webServer  
  
TYPE : 10 WIN32_OWN_PROCESS  
  
START_TYPE : 2 AUTO_START  
  
ERROR_CONTROL : 0 IGNORE  
  
BINARY_PATH_NAME : C:\Program Files\MSP\RemoteBackup\apache\Apache.exe -k runservice  
  
LOAD_ORDER_GROUP :  
  
TAG : 0  
  
DISPLAY_NAME : RemoteBackup_WebServer  
  
DEPENDENCIES :  
  
SERVICE_START_NAME : LocalSystem  
  
---------------------------------------------------------------------------  
  
  
EXAMPLE:  
  
Using the BINARY_PATH_NAME listed above as an example, an executable named  
"Program.exe" could be placed in "C:\", and it would be executed as the  
Local System user next time the service was restarted.  
  
  
`