CVE-2025-55071
📋 TL;DR
A reflected cross-site scripting vulnerability in MedDream PACS Premium allows attackers to execute arbitrary JavaScript code by tricking users into clicking malicious URLs. This affects healthcare organizations using MedDream PACS Premium 7.3.6.870 for medical imaging. Attackers can steal session cookies, redirect users, or perform actions on their behalf.
💻 Affected Systems
- MedDream PACS Premium
📦 What is this software?
Pacs Server by Meddream
⚠️ Risk & Real-World Impact
Worst Case
Attacker steals administrator session cookies, gains full system access, exfiltrates patient medical records, and potentially modifies medical imaging data.
Likely Case
Attacker steals user session cookies to access patient data, performs phishing attacks, or redirects users to malicious sites.
If Mitigated
With proper input validation and output encoding, the vulnerability is prevented; with web application firewalls, malicious payloads are blocked.
🎯 Exploit Status
Exploitation requires user interaction (clicking malicious link) but no authentication. Attack vectors include phishing emails or malicious websites.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Monitor MedDream vendor for security updates. 2. Apply patch when released. 3. Test in non-production environment first. 4. Restart services if required by patch.
🔧 Temporary Workarounds
Implement Web Application Firewall (WAF)
allDeploy WAF with XSS protection rules to block malicious payloads.
Input Validation and Output Encoding
allImplement server-side validation and proper output encoding for user inputs in modifyAnonymize functionality.
🧯 If You Can't Patch
- Restrict access to MedDream PACS to trusted networks only.
- Educate users about phishing risks and safe browsing practices.
🔍 How to Verify
Check if Vulnerable:
Test by attempting to inject JavaScript payloads into modifyAnonymize parameters via URL and checking if they execute.Check Version:
Check MedDream PACS version in application interface or configuration files.Verify Fix Applied:
After applying fixes, retest with same payloads to ensure they are properly sanitized or blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual URL parameters containing script tags or JavaScript code in modifyAnonymize requests
- Multiple failed login attempts following suspicious URL access
Network Indicators:
- HTTP requests with suspicious parameters in modifyAnonymize endpoints
- Outbound connections to unknown domains following access to crafted URLs
SIEM Query:
source="web_server" AND uri="*modifyAnonymize*" AND (param="*<script>*" OR param="*javascript:*")