CVE-2025-61431
📋 TL;DR
A reflected cross-site scripting (XSS) vulnerability in Zucchetti ZMaintenance Infinity and Infinity Zucchetti allows attackers to inject malicious JavaScript via the pHtmlSource parameter in the /jsp/gsfr_feditorHTML.jsp endpoint. This vulnerability affects users of version 4.1 and earlier, potentially enabling session hijacking, credential theft, or redirection to malicious sites when users interact with crafted URLs.
💻 Affected Systems
- Zucchetti ZMaintenance Infinity
- Infinity Zucchetti
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, hijack user sessions, redirect users to phishing sites, or perform actions on behalf of authenticated users, potentially leading to complete system compromise.
Likely Case
Attackers craft malicious URLs containing JavaScript payloads that execute when users click them, potentially stealing session cookies or performing limited unauthorized actions.
If Mitigated
With proper input validation and output encoding, the malicious payloads would be neutralized, preventing script execution while maintaining normal functionality.
🎯 Exploit Status
The vulnerability requires user interaction (clicking a malicious link) but requires no authentication. Public proof-of-concept demonstrates simple payload injection.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after v4.1 (specific version not specified in advisory)
Vendor Advisory: https://www.zucchetti.it/
Restart Required: Yes
Instructions:
1. Download the latest patch from Zucchetti's official website. 2. Apply the patch according to vendor instructions. 3. Restart the application server. 4. Verify the fix by testing the vulnerable endpoint.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rule
allBlock or sanitize requests containing malicious script patterns in the pHtmlSource parameter
Configure WAF to block requests with <script> tags or javascript: protocols in pHtmlSource parameter
Input Validation Filter
allImplement server-side validation to sanitize pHtmlSource parameter input
Add input validation to strip or encode HTML/JavaScript characters in pHtmlSource before processing
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to prevent inline script execution
- Disable or restrict access to the /jsp/gsfr_feditorHTML.jsp endpoint using network controls
🔍 How to Verify
Check if Vulnerable:
Test the endpoint by sending a request with a simple XSS payload in the pHtmlSource parameter (e.g., pHtmlSource=<script>alert('test')</script>) and check if script executesCheck Version:
Check application version in administrative interface or configuration filesVerify Fix Applied:
After patching, repeat the vulnerability test and confirm script execution is prevented (payload should be encoded or blocked)📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /jsp/gsfr_feditorHTML.jsp with suspicious parameters containing <script>, javascript:, or encoded script patterns
- Unusual parameter values in pHtmlSource exceeding normal length or containing special characters
Network Indicators:
- HTTP GET requests with script-like content in query parameters
- Traffic patterns showing repeated access attempts to the vulnerable endpoint
SIEM Query:
source="web_server" AND uri="/jsp/gsfr_feditorHTML.jsp" AND (query CONTAINS "<script>" OR query CONTAINS "javascript:")