CVE-2025-62925

Executive Summary

CVE-2025-62925 is a Missing Authorization vulnerability in the Conversios.io WordPress plugin (enhanced-e-commerce-for-woocommerce-store) affecting versions through 7.2.13. This flaw allows an unauthenticated attacker to exploit incorrectly configured access control security levels, potentially leading to unauthorized data access or modification of WooCommerce store settings. The vulnerability is classified as Medium severity (CVSS 5.4) and currently has no known public exploit or patch. Given the plugin’s widespread use in WooCommerce stores, this poses a significant risk to e-commerce operations.

Supply Chain & Package Security

This vulnerability resides in a WordPress plugin distributed via the official WordPress plugin repository. The plugin is not an NPM, PyPI, Go, or Ruby package, but it is part of the WordPress ecosystem. Organizations using this plugin should treat it as a supply chain risk, as the vendor has not released a patch. The lack of a patch means that all installations of the plugin up to version 7.2.13 are vulnerable, and no official fix is available.

CVSS Breakdown & Threat Level

• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
• Base Score: 5.4 (Medium)
• Attack Vector: Network (AV:N) – The vulnerability can be exploited remotely.
• Attack Complexity: Low (AC:L) – No special conditions are required.
• Privileges Required: None (PR:N) – No authentication needed.
• User Interaction: None (UI:N) – No user action required.
• Scope: Unchanged (S:U) – The exploit cannot affect other components.
• Confidentiality Impact: Low (C:L) – Limited data exposure.
• Integrity Impact: Low (I:L) – Limited data modification.
• Availability Impact: None (A:N) – No denial of service.

Threat Level: Medium. While the CVSS score is moderate, the lack of a patch and the plugin’s integration with WooCommerce (which handles sensitive customer and payment data) elevates the risk. An attacker could potentially access order details, customer information, or modify store settings.

Deep Dive & Mechanics

The vulnerability stems from missing authorization checks in the Conversios.io plugin’s REST API endpoints or AJAX handlers. The plugin likely exposes administrative functions (e.g., updating tracking codes, accessing analytics data, or modifying plugin settings) without verifying that the requesting user has the appropriate WordPress capabilities (e.g., manage_options or administrator).

Root Cause: The plugin fails to call current_user_can() or similar WordPress capability checks before executing sensitive operations. This allows any unauthenticated user to send crafted HTTP requests to the vulnerable endpoints and perform actions reserved for administrators.

Attack Vector: An attacker can send a POST/GET request to a vulnerable endpoint (e.g., /wp-admin/admin-ajax.php?action=conversios_update_settings) with malicious parameters. Since no authentication is enforced, the server processes the request as if it came from an admin.

Impact:

• Data Exposure: Access to WooCommerce analytics, order data, or customer information.
• Configuration Tampering: Modification of Google Analytics tracking IDs, conversion codes, or other plugin settings.
• Potential XSS/CSRF Chaining: If the plugin also lacks nonce checks, an attacker could combine this with CSRF to force an admin to execute actions.

Vulnerable vs. Patched Code

Since no patch is available, we can only analyze the vulnerable code pattern. The vulnerable version likely contains code similar to:

// Vulnerable code (no capability check)
add_action('wp_ajax_nopriv_conversios_save_settings', 'conversios_save_settings');
function conversios_save_settings() {
    update_option('conversios_settings', $_POST['settings']);
    wp_send_json_success();
}

A patched version would include:

// Patched code (with capability check)
add_action('wp_ajax_conversios_save_settings', 'conversios_save_settings');
function conversios_save_settings() {
    if (!current_user_can('manage_options')) {
        wp_die('Unauthorized', 403);
    }
    update_option('conversios_settings', $_POST['settings']);
    wp_send_json_success();
}

The key difference is the addition of current_user_can('manage_options') and the removal of the nopriv_ prefix (which allows unauthenticated access).

Exploitation & Lab Setup

Red Team

Prerequisites:

• A WordPress site with Conversios.io plugin version <= 7.2.13 installed and activated.
• No authentication required.

Exploitation Steps:

1. Identify Vulnerable Endpoints: Use a tool like Burp Suite or curl to probe for AJAX actions. Common actions might include conversios_save_settings, conversios_get_data, or conversios_update_tracking.

2. Craft Exploit Request: Send a POST request to the WordPress admin-ajax endpoint with the vulnerable action.

curl -X POST http://target.com/wp-admin/admin-ajax.php \
  -d "action=conversios_save_settings&settings[tracking_id]=UA-XXXXX-Y"

3. Verify Exploitation: Check if the plugin settings have been modified (e.g., by visiting the plugin’s settings page or checking the wp_options table).

Note: Since no public exploit code exists, this is a theoretical approach. The exact action names and parameters would need to be reverse-engineered from the plugin source.

Blue Team

Detection & Prevention:

1. Monitor AJAX Requests: Look for requests to /wp-admin/admin-ajax.php with suspicious action parameters (e.g., conversios_*) from unauthenticated users.

2. Web Application Firewall (WAF) Rules: Block requests to admin-ajax.php that contain action=conversios_ unless they include a valid nonce or authentication cookie.

3. Plugin Hardening: Temporarily disable the plugin until a patch is available. If disabling is not possible, restrict access to the plugin’s endpoints via .htaccess:

<FilesMatch "admin-ajax\.php">
    Order Deny,Allow
    Deny from all
    Allow from 127.0.0.1
</FilesMatch>

4. Audit Logs: Enable WordPress audit logging to track changes to plugin settings.

Indicators of Compromise (IOCs)

• Network IOCs:

  • HTTP POST requests to /wp-admin/admin-ajax.php with action=conversios_* parameters from unauthenticated IPs.
  • Unusual changes to the conversios_settings option in the WordPress database.

• File IOCs:

  • Modified plugin files (e.g., wp-content/plugins/enhanced-e-commerce-for-woocommerce-store/*.php) with unexpected code.
  • New files in the plugin directory (e.g., webshells).

• Log IOCs:

  • WordPress debug log entries showing wp_ajax_nopriv_conversios_* actions being called.
  • Web server access logs showing repeated requests to admin-ajax.php with action=conversios_*.

Detection Engineering

YARA Rule

rule Detect_Conversios_Missing_Auth {
    meta:
        description = "Detects vulnerable Conversios.io plugin files with missing authorization checks"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-62925"
    strings:
        $vuln_pattern = /add_action\s*\(\s*['\"]wp_ajax_nopriv_conversios_/
        $cap_check = /current_user_can\s*\(/
    condition:
        $vuln_pattern and not $cap_check
}

Sigma Rule

title: Detect Exploitation of CVE-2025-62925 - Conversios Missing Authorization
id: 8a4b3c2d-1e5f-4a7b-9c8d-0e1f2a3b4c5d
status: experimental
description: Detects unauthenticated AJAX requests to Conversios plugin endpoints
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
    service: access
detection:
    selection:
        cs-method: 'POST'
        cs-uri-stem: '/wp-admin/admin-ajax.php'
        cs-uri-query|contains: 'action=conversios_'
        sc-status: 200
    condition: selection
falsepositives:
    - Legitimate admin actions (if admin is logged in)
level: high

Suricata Rule

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"CVE-2025-62925 - Conversios Missing Authorization Exploit Attempt";
    flow:to_server,established;
    content:"POST";
    http_method;
    content:"/wp-admin/admin-ajax.php";
    http_uri;
    content:"action=conversios_";
    http_client_body;
    classtype:attempted-admin;
    sid:1000001;
    rev:1;
    reference:cve,2025-62925;
)

Remediation & Mitigation

Immediate Actions:

1. Disable the Plugin: If the plugin is not critical, deactivate and delete it until a patch is released.
2. Restrict Access: Use a WAF or .htaccess to block unauthenticated access to admin-ajax.php for the plugin’s actions.
3. Monitor Logs: Review web server and WordPress logs for signs of exploitation.

Long-Term Fix:

• Vendor Patch: Await an official update from Conversios. Monitor the WordPress plugin repository for version 7.2.14 or higher.
• Code Hardening: If you have developer resources, apply the patch manually by adding capability checks to all AJAX handlers (as shown in the Vulnerable vs. Patched Code section).

Workaround:

• Implement a custom function in your theme’s functions.php to block unauthenticated access to the plugin’s endpoints:

add_action('init', function() {
    if (defined('DOING_AJAX') && DOING_AJAX) {
        if (isset($_REQUEST['action']) && strpos($_REQUEST['action'], 'conversios_') === 0) {
            if (!is_user_logged_in() || !current_user_can('manage_options')) {
                wp_die('Unauthorized', 403);
            }
        }
    }
});

Valters IT
Securing Digital Frontiers