Serviio PRO 1.8 DLNA Media Streaming Server – Local Privilege Escalation

• Exploit Database
• 30 阅读

• 作者： LiquidWorm
  日期： 2017-05-03
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/41959/

• Serviio PRO 1.8 DLNA Media Streaming Server Local Privilege Escalation
  
  
  Vendor: Petr Nejedly | Six Lines Ltd
  Product web page: http://www.serviio.org
  Affected version: 1.8.0.0 PRO
  
  Summary: Serviio is a free media server. It allows you to stream your media
  files (music, video or images) to renderer devices (e.g. a TV set, Bluray player,
  games console or mobile phone) on your connected home network.
  
  Desc: The application suffers from an unquoted search path issue impacting the service
  'Serviio' for Windows deployed as part of Serviio DLNA server solution. 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.
  
  Serviio also suffers from improper permissions which can be used by a simple authenticated user
  that can change the executable file with a binary of choice. The vulnerability exist due to the
  improper permissions, with the 'F' flag (Full) for 'Users' group, for the Serviio directory and
  its sub-directories.
  
  
  Tested on: Microsoft Windows 7 Professional SP1 (EN)
   Microsoft Windows 7 Ultimate SP1 (EN)
  
  
  Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
  @zeroscience
  
  
  Advisory ID: ZSL-2017-5405
  Advisory URL: http://www.zeroscience.mk/en/vulnerability/ZSL-2017-5405.php
  
  SSD Advisory: https://blogs.securiteam.com/index.php/archives/3094
  
  
  12.12.2016
  
  ---
  
  
  C:\>sc qc Serviio
  [SC] QueryServiceConfig SUCCESS
  
  SERVICE_NAME: Serviio
  TYPE : 110WIN32_OWN_PROCESS (interactive)
  START_TYPE : 2 AUTO_START
  ERROR_CONTROL: 1 NORMAL
  BINARY_PATH_NAME : C:\Program Files\Serviio\bin\ServiioService.exe
  LOAD_ORDER_GROUP :
  TAG: 0
  DISPLAY_NAME : Serviio
  DEPENDENCIES : HTTP
  SERVICE_START_NAME : LocalSystem
  
  C:\>icacls "C:\Program Files\Serviio\bin\ServiioService.exe"
  C:\Program Files\Serviio\bin\ServiioService.exe BUILTIN\Users:(I)(F)
  NT AUTHORITY\SYSTEM:(I)(F)
  BUILTIN\Administrators:(I)(F)
  
  Successfully processed 1 files; Failed processing 0 files
  
  C:\>