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Plantronics Hub SpokesUpdateService Privilege Escalation

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Plantronics Hub SpokesUpdateService Privilege Escalation

Disclosed
08/30/2019
Created
01/15/2020

Description

The Plantronics Hub client application for Windows makes use of an automatic update service `SpokesUpdateService.exe` which automatically executes a file specified in the `MajorUpgrade.config` configuration file as SYSTEM. The configuration file is writable by all users by default. This module has been tested successfully on Plantronics Hub version 3.13.2 on Windows 7 SP1 (x64).

Author(s)

  • Markus Krell
  • 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/plantronics_hub_spokesupdateservice_privesc
msf exploit(plantronics_hub_spokesupdateservice_privesc) > show targets
    ...targets...
msf exploit(plantronics_hub_spokesupdateservice_privesc) > set TARGET < target-id >
msf exploit(plantronics_hub_spokesupdateservice_privesc) > show options
    ...show and set options...
msf exploit(plantronics_hub_spokesupdateservice_privesc) > exploit

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security

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