CVE-2024-25814
📋 TL;DR
MyNET up to v26.05 contains a reflected cross-site scripting (XSS) vulnerability in the msg parameter. This allows attackers to inject malicious scripts that execute in users' browsers when they visit a crafted URL. Organizations using vulnerable MyNET versions are affected.
💻 Affected Systems
- MyNET
📦 What is this software?
Mynet by Airc
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or install malware on user systems.
Likely Case
Session hijacking, credential theft, or defacement of web pages through script injection.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy (CSP) headers in place.
🎯 Exploit Status
Reflected XSS typically requires user interaction (clicking a malicious link) but is easy to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.airc.pt/solucoes-servicos/solucoes?segment=MYN
Restart Required: No
Instructions:
Check vendor advisory for updates. Upgrade to a version above v26.05 when available.
🔧 Temporary Workarounds
Implement WAF Rules
allConfigure web application firewall to block requests containing suspicious script patterns in the msg parameter.
Input Validation Filter
allAdd server-side validation to sanitize or reject malicious input in the msg parameter.
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to prevent script execution from untrusted sources.
- Monitor and filter user input for script patterns and block malicious requests at the network perimeter.
🔍 How to Verify
Check if Vulnerable:
Test by injecting a simple script payload into the msg parameter (e.g., <script>alert('test')</script>) and check if it executes.Check Version:
Check MyNET version in admin interface or configuration files.Verify Fix Applied:
After applying fixes, retest with the same payload to ensure it is properly sanitized or blocked.📡 Detection & Monitoring
Log Indicators:
- Log entries showing script tags or JavaScript in msg parameter requests.
Network Indicators:
- HTTP requests with suspicious script content in query parameters.
SIEM Query:
source="web_logs" AND msg="*<script>*"