GEOVAP Reliance 4 Control Server Privilege Escalation

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GEOVAP Reliance 4 Control Server Unquoted Service Path Elevation Of Privilege  
  
  
Vendor: GEOVAP, spol. s r.o.  
Product web page: http://www.geovap.cz  
http://www.reliance.cz  
http://www.reliance-scada.com  
Affected version: 4.7.1 (Revision 25172)  
  
Summary: Reliance is a professional SCADA/HMI system designed for the  
visualization and control of industrial processes and for building automation.  
  
Desc: The application suffers from an unquoted search path issue impacting the  
service 'RelianceOpcDaWrapper' for Windows deployed as part of Reliance 4 SCADA/HMI  
system installer including Reliance OPC Server. This could potentially allow an  
authorized but non-privileged local user to execute arbitrary code with elevated  
privileges on the system. 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.  
  
Tested on: Microsoft Windows 7 Professional SP1 (EN)  
Microsoft Windows 7 Ultimate SP1 (EN)  
  
  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
@zeroscience  
  
  
Advisory ID: ZSL-2015-5285  
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5285.php  
  
  
14.10.2015  
  
--  
  
  
C:\Users\kungpow>sc qc RelianceOpcDaWrapper  
[SC] QueryServiceConfig SUCCESS  
  
SERVICE_NAME: RelianceOpcDaWrapper  
TYPE : 10 WIN32_OWN_PROCESS  
START_TYPE : 3 DEMAND_START  
ERROR_CONTROL : 1 NORMAL  
BINARY_PATH_NAME : C:\Program Files (x86)\GEOVAP\RelianceOPCServer\OpcDaWrapper.exe  
LOAD_ORDER_GROUP :  
TAG : 0  
DISPLAY_NAME : Reliance OPC DA Server Wrapper  
DEPENDENCIES : RPCSS  
SERVICE_START_NAME : LocalSystem  
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