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dbaudio R1 2.14.4 Privilege Escalation

dbaudio R1 2.14.4 Privilege Escalation
Posted Jan 15, 2016
Authored by LiquidWorm | Site zeroscience.mk

dbsudio version R1 2.14.4 and DNS-SD version 379.32.2 suffer 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.

tags | exploit, arbitrary, local
systems | windows
SHA-256 | 8540ce34f757c3caaa3423f7f660d1846c35c7dd764ffc65e4f5273bd6c83122

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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