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FreePBX 2.10.0 / 2.9.0 callmenum Remote Code Execution

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FreePBX 2.10.0 / 2.9.0 callmenum Remote Code Execution

Disclosed
03/20/2012
Created
05/30/2018

Description

This module exploits FreePBX version 2.10.0,2.9.0 and possibly older. Due to the way callme_page.php handles the 'callmenum' parameter, it is possible to inject code to the '$channel' variable in function callme_startcall in order to gain remote code execution. Please note in order to use this module properly, you must know the extension number, which can be enumerated or bruteforced, or you may try some of the default extensions such as 0 or 200. Also, the call has to be answered (or go to voice). Tested on both Elastix and FreePBX ISO image installs.

Author(s)

  • muts
  • Martin Tschirsich

Platform

Unix

Architectures

cmd

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/unix/http/freepbx_callmenum
msf exploit(freepbx_callmenum) > show targets
    ...targets...
msf exploit(freepbx_callmenum) > set TARGET < target-id >
msf exploit(freepbx_callmenum) > show options
    ...show and set options...
msf exploit(freepbx_callmenum) > exploit

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