Comodo Dragon Browser – Unquoted Service Path Privilege Escalation

• Exploit Database
• 14 阅读

• 作者： Th3GundY
  日期： 2016-10-06
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/40471/

• # Exploit Title: Comodo Dragon Browser Unquoted Service Path Privilege Escalation
  # Date: 24/09/2016
  # Author: Yunus YILDIRIM (@Th3GundY)
  # Team: CT-Zer0 (@CRYPTTECH)
  # Website: http://yildirimyunus.com
  # Contact: yunusyildirim@protonmail.com
  # Category: local
  # Vendor Homepage: https://www.comodo.com
  # Software Link: https://www.comodo.com/home/browsers-toolbars/browser.php
  # Version: Software Version <= 52.15.25.663
  # Tested on: Windows 7 x86/x64
  
  1. Description
  
  Comodo Dragon Browser Update Service (DragonUpdater) 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 DragonUpdater
  [SC] QueryServiceConfig SUCCESS
  SERVICE_NAME: DragonUpdater
  TYPE : 10WIN32_OWN_PROCESS 	
  START_TYPE : 2 AUTO_START
  ERROR_CONTROL: 1 NORMAL
  BINARY_PATH_NAME : C:\Program Files (x86)\Comodo\Dragon\dragon_updater.exe
  LOAD_ORDER_GROUP : 
  TAG: 0
  DISPLAY_NAME : COMODO Dragon 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.
  
  
  Additional notes :
  
  Fixed in version 52.15.25.664
  https://forums.comodo.com/news-announcements-feedback-cd/comodo-dragon-v521525664-is-now-available-for-download-t116786.0.html
  
  Vulnerability Disclosure Timeline:
  =========================
  24/09/2016 - Contact With Vendor
  26/09/2016 - Vendor Response
  03/10/2016 - Release Fixed Version