# Exploit Title: Samsung SW Update Service Unquoted Service Path Privilege Escalation
# Date: 04/10/2016
# Author: Yunus YILDIRIM (Th3GundY)
# Team: CT-Zer0 (@CRYPTTECH) && Superbug (@xsuperbug)
# Website: http://yildirimyunus.com
# Contact: yunusyildirim@protonmail.com
# Category: local
# Vendor Homepage: http://www.samsung.com
# Software Link: http://downloadcenter.samsung.com/content/SW/201608/20160825024052515/SWUpdate_2.2.8.28.ZIP
# Version: Affected Software Version < 2.2.8.30
# Tested on: Windows 7 x86/x64 & Windows 10 x64/x86
1. Description
Samsung Software Update Service, SWUpdateService (SWMAgent.exe), installs as a service with
an unquoted service path running with SYSTEM privileges.
This could potentially allow an authorized but non-privileged local
user to execute arbitrary code with elevated privileges on the system.
2. Proof of Concept
C:\>sc qc SWUpdateService
[SC] QueryServiceConfig SUCCESS
SERVICE_NAME: SWUpdateService
TYPE : 110 WIN32_OWN_PROCESS (interactive)
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\ProgramData\Samsung\SW Update Service\SWMAgent.exe /SERVICE
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : SW Update Service
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem
3. Exploit:
A successful attempt would require the local attacker must insert an executable file in the path of the service.
Upon service restart or system reboot, the malicious code will be run with elevated privileges.
Vulnerability Disclosure Timeline:
=========================
04/10/2016 - Contact With Vendor
04/10/2016 - Vendor Response
18/10/2016 - Release Fixed Version
Additional notes :
=========================
Fixed version 2.2.8.30