CVE-2025-68578

Executive Summary

CVE-2025-68578 is a Missing Authorization vulnerability in the Addonify Quick View WordPress plugin (versions <= 2.0.4). This flaw allows unauthenticated attackers to exploit incorrectly configured access control security levels, potentially exposing sensitive data or functionality intended for privileged users. The vulnerability is classified as Medium severity (CVSS 5.3) and currently has no known public exploit or patch. As a WordPress plugin issue, it affects sites using the Addonify Quick View plugin and is not related to the underlying web server (Apache/Nginx).

Supply Chain & Package Security

This vulnerability resides in a WordPress plugin distributed via the official WordPress plugin repository. Users should verify plugin integrity by checking checksums and monitoring for updates. No known supply chain compromise has been reported, but the lack of a patch increases risk for unmaintained installations.

CVSS Breakdown & Threat Level

• Attack Vector (AV): Network (N) – exploitable remotely.
• Attack Complexity (AC): Low (L) – no special conditions required.
• Privileges Required (PR): None (N) – unauthenticated.
• User Interaction (UI): None (N) – no user action needed.
• Scope (S): Unchanged (U) – impact confined to the vulnerable component.
• Confidentiality (C): Low (L) – limited data exposure.
• Integrity (I): None (N) – no data modification.
• Availability (A): None (N) – no denial of service.

Threat Level: Medium. While the CVSS score is 5.3, the lack of a patch and the plugin’s widespread use in e-commerce environments elevate the risk. Attackers could enumerate sensitive information or trigger unintended actions.

Deep Dive & Mechanics

The vulnerability stems from missing authorization checks in the addonify-quick-view plugin’s AJAX handlers or REST endpoints. The plugin fails to verify user capabilities before executing actions such as loading product quick views, fetching metadata, or modifying settings. This allows unauthenticated attackers to:

• Access product data intended for logged-in users.
• Trigger administrative functions if exposed via AJAX.
• Bypass role-based restrictions.

The issue is classified under CWE-862: Missing Authorization. The plugin’s code likely uses wp_ajax_nopriv_* hooks without proper capability checks, or exposes endpoints that should require manage_options or edit_posts capabilities.

Vulnerable vs. Patched Code

Since no patch is available, the vulnerable code pattern is described generically:

Vulnerable (<= 2.0.4):

add_action('wp_ajax_nopriv_addonify_quick_view', 'handle_quick_view');
function handle_quick_view() {
    // No capability check
    $product_id = $_POST['product_id'];
    // Process request...
}

Patched (hypothetical):

add_action('wp_ajax_nopriv_addonify_quick_view', 'handle_quick_view');
function handle_quick_view() {
    if (!current_user_can('edit_posts')) {
        wp_die('Unauthorized');
    }
    $product_id = $_POST['product_id'];
    // Process request...
}

The fix requires adding current_user_can() checks or using check_ajax_referer() with appropriate nonces.

Exploitation & Lab Setup

Red Team

Prerequisites:

• Target WordPress site with Addonify Quick View <= 2.0.4.
• No authentication required.

Exploitation Steps:

1. Identify the vulnerable AJAX endpoint (e.g., /wp-admin/admin-ajax.php?action=addonify_quick_view).
2. Send a crafted POST request without any authentication:

   curl -X POST https://target.com/wp-admin/admin-ajax.php \
     -d "action=addonify_quick_view&product_id=1"
   

3. Observe the response for sensitive data (e.g., product metadata, user info).

No public exploit code is available. The above is a generic proof-of-concept.

Blue Team

Detection:

• Monitor for unusual AJAX requests to admin-ajax.php with action=addonify_quick_view from unauthenticated IPs.
• Look for repeated requests without nonce parameters.

Hunting:

• Search logs for POST /wp-admin/admin-ajax.php with action=addonify_quick_view and no _wpnonce field.
• Correlate with failed login attempts or scanning behavior.

Indicators of Compromise (IOCs)

• Network:
  • POST requests to /wp-admin/admin-ajax.php with action=addonify_quick_view from unauthenticated sources.
  • Repeated requests with varying product_id parameters.
• File:
  • Modified or unexpected files in /wp-content/plugins/addonify-quick-view/.
• Log:
  • PHP error logs showing warnings from addonify-quick-view plugin.

Detection Engineering

YARA Rule

rule CVE_2025_68578_Addonify_Quick_View {
    meta:
        description = "Detects vulnerable Addonify Quick View plugin files"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-68578"
    strings:
        $vuln_func = "wp_ajax_nopriv_addonify_quick_view"
        $no_check = "current_user_can" nocase
    condition:
        $vuln_func and not $no_check
}

Sigma Rule

title: CVE-2025-68578 - Addonify Quick View Missing Authorization
id: 8a3f7c2e-5b1d-4a9f-8c6e-2d3f1a0b9c8d
status: experimental
description: Detects unauthenticated AJAX requests to Addonify Quick View endpoint
author: Valters IT
logsource:
    category: webserver
    product: apache
    service: access
detection:
    selection:
        cs-method: 'POST'
        cs-uri-query|contains: 'action=addonify_quick_view'
        sc-status: 200
    condition: selection
falsepositives:
    - Legitimate plugin usage from authenticated users (rare)
level: medium

Suricata Rule

alert http any any -> any any (
    msg:"CVE-2025-68578 - Addonify Quick View Missing Authorization Attempt";
    flow:to_server;
    content:"POST";
    http_method;
    content:"/wp-admin/admin-ajax.php";
    http_uri;
    content:"action=addonify_quick_view";
    http_client_body;
    classtype:attempted-recon;
    sid:1000001;
    rev:1;
)

Remediation & Mitigation

Immediate Actions:

1. Disable the plugin if not critical to operations.
2. Implement a Web Application Firewall (WAF) rule to block unauthenticated requests to admin-ajax.php with action=addonify_quick_view.
3. Monitor logs for exploitation attempts.

Long-term Fix:

• Apply a custom patch by adding capability checks to the plugin’s AJAX handlers (see Vulnerable vs. Patched Code section).
• Contact the vendor for an official update.
• Consider replacing the plugin with an alternative that is actively maintained.

Workaround:

• Use .htaccess to restrict access to admin-ajax.php for unauthenticated users (may break legitimate functionality):

  <Files "admin-ajax.php">
      Require all denied
  </Files>
  

Valters IT
Securing Digital Frontiers