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Tosibox Key Service 3.3.0 Local Privilege Escalation / Unquoted Service Path

Tosibox Key Service 3.3.0 Local Privilege Escalation / Unquoted Service Path
Posted Feb 24, 2024
Authored by LiquidWorm | Site zeroscience.mk

Tosibox Key Service versions 3.3.0 and below suffer from an unquoted search path issue impacting the service Tosibox Key Service for Windows. 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 | 7820f9f7d9af81913956c26707d4acc215ad499c129864227adf8ac1f2345e47

Tosibox Key Service 3.3.0 Local Privilege Escalation / Unquoted Service Path

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Tosibox Key Service 3.3.0 Local Privilege Escalation


Vendor: Tosibox Oy
Product web page: https://www.tosibox.com
Affected version: <=3.3.0

Summary: TOSIBOX® SoftKey is a software that enables a secure connection
between your computer and one or more TOSIBOX® Nodes, giving you full
visibility and control over the network devices connected to the Node.

Desc: The application suffers from an unquoted search path issue impacting
the service 'Tosibox Key Service' for Windows deployed as part of Tosibox
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: Windows 10 Home 64 bit (build 9200)


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience


Advisory ID: ZSL-2024-5812
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2024-5812.php


30.01.2024

--


C:\Users\ews>sc qc "Tosibox Key Service"
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: Tosibox Key Service
TYPE : 110 WIN32_OWN_PROCESS (interactive)
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files (x86)\Tosibox\bin\TosiboxKeyService.exe
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Tosibox Key Service
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem

C:\Users\ews>
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