CVE-2025-41103
📋 TL;DR
This CVE describes an HTML injection vulnerability in Fairsketch's RISE CRM Framework v3.8.1. Attackers can inject malicious HTML code via the 'reply_message' parameter in POST requests to '/messages/reply', potentially leading to cross-site scripting attacks. Organizations using this specific version of RISE CRM are affected.
💻 Affected Systems
- Fairsketch RISE CRM Framework
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could execute arbitrary JavaScript in victims' browsers, potentially stealing session cookies, performing actions as authenticated users, or redirecting to malicious sites.
Likely Case
Attackers inject malicious HTML/JavaScript that executes when users view messages, potentially stealing session data or performing limited actions within the CRM.
If Mitigated
With proper input validation and output encoding, injected HTML would be rendered as plain text rather than executable code.
🎯 Exploit Status
Exploitation requires sending POST requests to the vulnerable endpoint with malicious HTML in the 'reply_message' parameter.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-fairsketchs-rise-crm-framework
Restart Required: No
Instructions:
Check vendor website for security updates. If available, apply the patch and verify input validation is properly implemented for the 'reply_message' parameter.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize HTML content in the 'reply_message' parameter before processing.
WAF Rule
allDeploy a web application firewall rule to block POST requests containing suspicious HTML patterns in the 'reply_message' parameter.
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to limit script execution.
- Disable or restrict access to the '/messages/reply' endpoint if not essential for business operations.
🔍 How to Verify
Check if Vulnerable:
Test by sending a POST request to '/messages/reply' with HTML tags in the 'reply_message' parameter and check if they are rendered as HTML in the response.Check Version:
Check the CRM framework version in the application's admin panel or configuration files.Verify Fix Applied:
After applying fixes, test the same injection attempt to confirm HTML is properly escaped or rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to '/messages/reply' containing HTML tags or JavaScript code in parameters.
- Multiple failed injection attempts from single IP addresses.
Network Indicators:
- HTTP POST traffic to the vulnerable endpoint with suspicious payloads in the request body.
SIEM Query:
source="web_server_logs" AND uri="/messages/reply" AND method="POST" AND (message="<script>" OR message="javascript:")