iniNet SpiderControl SCADA Web Server Service 2.02 Privilege Escalation

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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  
`