devolo dLAN Cockpit 4.3.1 Unquoted Service Path Privilege Escalation

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devolo dLAN Cockpit 4.3.1 Unquoted Service Path Privilege Escalation  
  
  
Vendor: devolo AG  
Product web page: https://www.devolo.com  
Affected version: 4.3.1  
  
Summary: devolo dLANA(r) Cockpit is a software tool that allows devolo  
customers to monitor and optimise their dLANA(r) network using a software  
tool.  
  
Desc: The application suffers from an unquoted search path issue  
impacting the service 'DevoloNetworkService' for Windows deployed  
as part of Devolo dLANA(r) Cockpit software application. 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 Ultimate SP1 (EN)  
  
  
Vulnerability discovered by Stefan Petrushevski aka sm  
@zeroscience  
  
  
Advisory ID: ZSL-2019-5506  
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5506.php  
  
  
04.10.2017  
  
--  
  
  
ServiceName Path StartName AbuseFunction  
----------- ---- --------- -------------  
DevoloNetworkService C:\Program Files\devolo\dl... LocalSystem Write-ServiceBinary -Servi...  
  
  
C:\>sc qc DevoloNetworkService  
  
[SC] QueryServiceConfig SUCCESS  
  
SERVICE_NAME: DevoloNetworkService  
TYPE : 110 WIN32_OWN_PROCESS (interactive)  
START_TYPE : 2 AUTO_START  
ERROR_CONTROL : 1 NORMAL  
BINARY_PATH_NAME : C:\Program Files (x86)\devolo\dlan\devolonetsvc.exe  
LOAD_ORDER_GROUP :  
TAG : 0  
DISPLAY_NAME : devolo Network Service  
DEPENDENCIES :  
SERVICE_START_NAME : LocalSystem  
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