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Realtek 11n Wireless LAN Utility Privilege Escalation
<html><body><p>Realtek 11n Wireless LAN Utility Privilege Escalation
Vendor: Realtek Semiconductor Corp.
Product web page: http://www.realtek.com.tw
Affected version: 700.1631.106.2011
Summary: Realtek 11n Wireless LAN utility is deployed and used by realtek
alfa cards and more in order to help diagnose and view wireless card
properties.
Desc: The application suffers from an unquoted search path issue impacting
the Realtek Service 'Realtek11nSU' and 'Realtek11nCU' for Windows deployed
as part of 11n USB Wireless LAN Utility. 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
Vulnerability discovered by Humberto Cabrera
@dniz0r
Advisory ID: ZSL-2015-5228
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5228.php
12.02.2015
--
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: realtek11ncu
TYPE : 110 WIN32_OWN_PROCESS (interactive)
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files\REALTEK\11n USB Wireless LAN
Utility\RtlService.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Realtek11nCU
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem
C:\Windows\system32>sc qc realtek11nsu
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: realtek11nsu
TYPE : 110 WIN32_OWN_PROCESS (interactive)
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files\REALTEK\Wireless LAN
Utility\RtlService.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Realtek11nSU
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem
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24 Feb 2015 00:00Current
6.2Medium risk
Vulners AI Score6.2