exacqVision version 9.8 suffers from an unquoted search path issue impacting the services exacqVisionServer, dvrdhcpserver and mdnsresponder for Windows deployed as part of exacqVision 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.
98a9960106f1cef1cf55ce4666251455
exacqVision 9.8 Unquoted Service Path Privilege Escalation
Vendor: Exacq Technologies, Inc.
Product web page: https://www.exacq.com
Affected version: 9.8.4.150001
Summary: The exacqVision VMS (Video Management System) software records surveillance
video from thousands of IP camera models and displays on a free Windows, Linux or OSX
client software, web browser or mobile device.
Desc: The application suffers from an unquoted search path issue impacting the services
'exacqVisionServer', 'dvrdhcpserver' and 'mdnsresponder' for Windows deployed as part of
exacqVision 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 Professional SP1 (EN)
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2019-5515
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5515.php
30.01.2019
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C:\Windows\system32>sc qc exacqVisionServer
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: exacqVisionServer
TYPE : 10 WIN32_OWN_PROCESS
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files (x86)\exacqVision\Server\exacqd.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : exacqVision Server
DEPENDENCIES : eventlog
: w32time
SERVICE_START_NAME : LocalSystem
C:\Windows\system32>sc qc dvrdhcpserver
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: dvrdhcpserver
TYPE : 10 WIN32_OWN_PROCESS
START_TYPE : 3 DEMAND_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files (x86)\exacqVision\Server\opendhcpserver.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : exacqVision DHCP Service
DEPENDENCIES :
SERVICE_START_NAME : NT Authority\NetworkService
C:\Windows\system32>sc qc mdnsresponder
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: mdnsresponder
TYPE : 10 WIN32_OWN_PROCESS
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files (x86)\exacqVision\Server\mDNSResponder.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : exacqVision mDNS Service
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem