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:Userskungpow>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)GEOVAPRelianceOPCServerOpcDaWrapper.exe LOAD_ORDER_GROUP : TAG : 0 DISPLAY_NAME : Reliance OPC DA Server Wrapper DEPENDENCIES : RPCSS SERVICE_START_NAME : LocalSystem