dbaudio R1 2.14.4 Privilege Escalation

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dbaudio R1 v2.14.4 DNS-SD Service Unquoted Service Path Privilege Escalation  
  
Vendor: d&b audiotechnik GmbH  
Product web page: http://www.dbaudio.com  
Affected version: R1 2.14.4 and DNS-SD 379.32.2  
  
Summary: The R1 Remote control software succeeds the d&b ROPE C software.  
It is a software package designed to operate d&b amplifiers (D12, D6, E-PAC  
with Display) remotely using the d&b Remote network based on CAN-Bus technology.  
  
Desc: The application suffers from an unquoted search path issue impacting  
the service 'dbaudio DNS-SD' for Windows deployed as part of dbaudio R1. 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)  
Microsoft Windows 7 Professional SP1 (EN)  
  
  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
@zeroscience  
  
  
Advisory ID: ZSL-2016-5293  
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5293.php  
  
  
01.12.2015  
  
--  
  
  
C:\windows\system32>sc qc "dbaudio DNS-SD Service"  
[SC] QueryServiceConfig SUCCESS  
  
SERVICE_NAME: dbaudio DNS-SD Service  
TYPE : 20 WIN32_SHARE_PROCESS  
START_TYPE : 2 AUTO_START  
ERROR_CONTROL : 1 NORMAL  
BINARY_PATH_NAME : C:\Program Files (x86)\dbaudio\DNS-SD Service\mDNSResponder.exe  
LOAD_ORDER_GROUP :  
TAG : 0  
DISPLAY_NAME : dbaudio DNS-SD Service  
DEPENDENCIES : Tcpip  
SERVICE_START_NAME : LocalSystem  
  
C:\windows\system32>  
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