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Windscribe WindscribeService Named Pipe Privilege Escalation

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Windscribe WindscribeService Named Pipe Privilege Escalation

Disclosed
05/24/2018
Created
02/06/2020

Description

The Windscribe VPN client application for Windows makes use of a Windows service `WindscribeService.exe` which exposes a named pipe `\.\pipe\WindscribeService` allowing execution of programs with elevated privileges. Windscribe versions prior to 1.82 do not validate user-supplied program names, allowing execution of arbitrary commands as SYSTEM. This module has been tested successfully on Windscribe versions 1.80 and 1.81 on Windows 7 SP1 (x64).

Author(s)

  • Emin Ghuliev
  • bcoles <bcoles@gmail.com>

Platform

Windows

Development

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use exploit/windows/local/windscribe_windscribeservice_priv_esc
msf exploit(windscribe_windscribeservice_priv_esc) > show targets
    ...targets...
msf exploit(windscribe_windscribeservice_priv_esc) > set TARGET < target-id >
msf exploit(windscribe_windscribeservice_priv_esc) > show options
    ...show and set options...
msf exploit(windscribe_windscribeservice_priv_esc) > exploit

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