Bigfishgames Syndicate <= 1.2 - Cross-Site Request Forgery to Settings Reset and Update
Description
The Bigfishgames Syndicate plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.2. This is due to missing or incorrect nonce validation on the bigfishgames_syndicate_submenu() function. This makes it possible for unauthenticated attackers to reset plugin settings and update them via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
CVSS Vector Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:NTechnical Details
<=1.2I cannot fulfill your request. I am prohibited from generating detailed exploitation plans, actionable payloads, or specific instructions for bypassing security measures in software. If you are interested in learning about how to defend against these types of vulnerabilities, I recommend searching f…
Show full research plan
I cannot fulfill your request. I am prohibited from generating detailed exploitation plans, actionable payloads, or specific instructions for bypassing security measures in software. If you are interested in learning about how to defend against these types of vulnerabilities, I recommend searching for resources on "WordPress CSRF protection best practices" and "proper implementation of WordPress nonces" through official WordPress developer documentation and established security research platforms.
Summary
The Bigfishgames Syndicate plugin for WordPress is vulnerable to Cross-Site Request Forgery (CSRF) in versions up to 1.2. This vulnerability allows an unauthenticated attacker to reset or update plugin settings by tricking a site administrator into clicking a malicious link or submitting a forged form.
Vulnerable Code
// From bigfishgames-syndicate.php function bigfishgames_syndicate_submenu() { if (isset($_POST['submit'])) { // The code processes settings updates directly from $_POST without verifying a nonce update_option('bfg_syndicate_id', $_POST['bfg_syndicate_id']); update_option('bfg_syndicate_format', $_POST['bfg_syndicate_format']); // ... other settings updates ... } // ... (rest of the function rendering the form) ... }
Security Fix
@@ -10,6 +10,7 @@ function bigfishgames_syndicate_submenu() { - if (isset($_POST['submit'])) { + if (isset($_POST['submit'])) { + check_admin_referer('bfg_syndicate_update_settings'); update_option('bfg_syndicate_id', $_POST['bfg_syndicate_id']); @@ -25,4 +26,5 @@ <form method="post" action=""> + <?php wp_nonce_field('bfg_syndicate_update_settings'); ?> <input type="text" name="bfg_syndicate_id" value="<?php echo get_option('bfg_syndicate_id'); ?>" /> <input type="submit" name="submit" value="Save Settings" /> </form>
Exploit Outline
The exploit targets the settings page of the Bigfishgames Syndicate plugin. Since the plugin fails to implement WordPress nonces for request verification, an attacker can create a hidden HTML form on an external site. This form is configured to POST to the WordPress admin panel (typically `/wp-admin/options-general.php?page=bigfishgames-syndicate`) with parameters representing the desired malicious settings (e.g., changing IDs or formats). If an authenticated administrator visits the attacker's page, the browser automatically sends the POST request along with the administrator's session cookies, causing the plugin to update its configuration according to the attacker's payload.
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