iniNet SpiderControl SCADA Web Server Service 2.02 – Insecure File Permissions
iniNet SpiderControl SCADA Web Server Service 2.02 Insecure File Permissions Vendor: iniNet Solutions GmbH Product web page: http://www.spidercontrol.net Affected version: 2.02.0000 Summary: Modular and automated engineering is provided for HMI and SCADA. The tools are developed to join a large range of engineering modules together quickly. We modularize our software, as the mechanics of a system are modularized today. Easy to visualize with a few clicks. Desc: SpiderControl SCADA Web Server Service suffers from an elevation of privileges vulnerability which can be used by a simple user that can change the executable file with a binary of choice. The vulnerability exist due to the improper permissions, with the 'C' flag (Change) for 'Everyone' and 'Authenticated Users' group making the entire directory 'WWW' and its files and sub-dirs world-writable. Tested on: Microsoft Windows 7 Professional SP1 (EN) Microsoft Windows 7 Ultimate SP1 (EN) Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2015-5284 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5284.php 22.10.2015 -- C:\WWW>dir Volume in drive C is Windows Volume Serial Number is 56F3-8688 Directory of C:\WWW 22/10/2015 10:54 <DIR> . 22/10/2015 10:54 <DIR> .. 22/10/2015 10:55 <DIR> HMI 07/02/2008 23:41 147,968 libnodave.dll 22/10/2015 10:54 <DIR> Manual 07/07/2015 12:03 1,687,552 SCADAControlPanel.exe 07/07/2015 12:03 203,776 ScadaWindowsService.exe 22/10/2015 10:54 3,092 unins000.dat 22/10/2015 10:53 719,496 unins000.exe 07/07/2015 12:07 793,088 ZelsWebServ.dll 22/10/2015 10:54 1,546 ZelsWebServ.xml 22/10/2015 10:55 38,696 ZelsWebServ_log.txt 8 File(s) 3,595,214 bytes 4 Dir(s) 77,683,298,304 bytes free C:\WWW>cacls *.exe C:\WWW\SCADAControlPanel.exe Everyone:C BUILTIN\Administrators:(ID)F NT AUTHORITY\SYSTEM:(ID)F BUILTIN\Users:(ID)R NT AUTHORITY\Authenticated Users:(ID)C C:\WWW\ScadaWindowsService.exe Everyone:C BUILTIN\Administrators:(ID)F NT AUTHORITY\SYSTEM:(ID)F BUILTIN\Users:(ID)R NT AUTHORITY\Authenticated Users:(ID)C C:\WWW\unins000.exe BUILTIN\Administrators:(ID)F NT AUTHORITY\SYSTEM:(ID)F BUILTIN\Users:(ID)R NT AUTHORITY\Authenticated Users:(ID)C --- C:\Users\joxy>sc qc SCADAServer [SC] QueryServiceConfig SUCCESS SERVICE_NAME: SCADAServer TYPE : 110 WIN32_OWN_PROCESS (interactive) START_TYPE : 2 AUTO_START ERROR_CONTROL : 1 NORMAL BINARY_PATH_NAME : C:\WWW\ScadaWindowsService.exe LOAD_ORDER_GROUP : TAG : 0 DISPLAY_NAME : SCADA Server DEPENDENCIES : SERVICE_START_NAME : LocalSystem |