devolo dLAN Cockpit 4.3.1 Unquoted Service Path Privilege Escalation

Title: devolo dLAN Cockpit 4.3.1 Unquoted Service Path Privilege Escalation
Advisory ID: ZSL-2019-5506
Type: Local
Impact: Privilege Escalation
Risk: (2/5)
Release Date: 03.02.2019
Summary
devolo dLAN® Cockpit is a software tool that allows devolo customers to monitor and optimise their dLAN® network using a software tool.
Description
The application suffers from an unquoted search path issue impacting the service 'DevoloNetworkService' for Windows deployed as part of Devolo dLAN® 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.
Vendor
devolo AG - https://www.devolo.com
Affected Version
4.3.1
Tested On
Microsoft Windows 7 Ultimate SP1 (EN)
Vendor Status
[04.10.2017] Vulnerability discovered.
[11.10.2017] Vendor contacted via email.
[14.10.2017] No response from the vendor.
[15.10.2017] Second attempt - Vendor contacted via email.
[02.02.2019] No response from the vendor.
[03.02.2019] Public security advisory released.
PoC
devolo_eop.txt
Credits
Vulnerability discovered by Stefan Petrushevski - <stefan@zeroscience.mk>
References
[1] https://packetstormsecurity.com/files/151525
[2] https://cxsecurity.com/issue/WLB-2019020037
[3] https://exchange.xforce.ibmcloud.com/vulnerabilities/156594
Changelog
[03.02.2019] - Initial release
[10.02.2019] - Added reference [1], [2] and [3]
Contact
Zero Science Lab

Web: http://www.zeroscience.mk
e-mail: lab@zeroscience.mk