OpenVPN Private Tunnel Core Service – Unquoted Service Path Privilege Escalation

• Exploit Database
• 7 阅读

• 作者： LiquidWorm
  日期： 2014-07-12
• 类别：

  • local
  平台：

  • windows_x86
• 来源：https://www.exploit-db.com/exploits/34037/

• 
  OpenVPN Private Tunnel Core Service Unquoted Service Path Elevation Of Privilege
  
  
  Vendor: OpenVPN Technologies, Inc
  Product web page: http://www.openvpn.net
  Affected version: 2.1.28.0 (PrivateTunnel 2.3.8)
  
  Summary: Private Tunnel is a new approach to true Internet security creating
  a Virtual Private Tunnel (VPT) or Virtual Private Network (VPN) that encrypts,
  privatizes, and protects your Internet traffic.
  
  Desc: Private Tunnel application suffers from an unquoted search path issue
  impacting the Core Service 'ptservice' service for Windows deployed as part
  of PrivateTunnel bundle. 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 Professional SP1 (EN)
   Microsoft Windows XP Professional SP3 (EN)
  
  
  Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
  @zeroscience
  
  
  Advisory ID: ZSL-2014-5192
  Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2014-5192.php
  
  
  07.07.2014
  
  ---
  
  
  C:\Users\user>sc qc ptservice
  [SC] QueryServiceConfig SUCCESS
  
  SERVICE_NAME: ptservice
  TYPE : 10WIN32_OWN_PROCESS
  START_TYPE : 2 AUTO_START
  ERROR_CONTROL: 1 NORMAL
  BINARY_PATH_NAME : C:\Program Files (x86)\OpenVPN Technologies\PrivateTunnel\ptservice.exe
  LOAD_ORDER_GROUP :
  TAG: 0
  DISPLAY_NAME : Private Tunnel Core Service
  DEPENDENCIES :
  SERVICE_START_NAME : LocalSystem
  
  C:\Users\user>icacls "C:\Program Files (x86)\OpenVPN Technologies\PrivateTunnel\ptservice.exe"
  C:\Program Files (x86)\OpenVPN Technologies\PrivateTunnel\ptservice.exe NT AUTHORITY\SYSTEM:(I)(F)
  BUILTIN\Administrators:(I)(F)
  BUILTIN\Users:(I)(RX)
  
  Successfully processed 1 files; Failed processing 0 files
  
  C:\Users\user>