CVE-2025-54495
📋 TL;DR
A reflected cross-site scripting vulnerability in MedDream PACS Premium allows attackers to execute arbitrary JavaScript code by tricking users into clicking specially crafted malicious URLs. This affects all users of MedDream PACS Premium 7.3.6.870 who access the emailfailedjob functionality.
💻 Affected Systems
- MedDream PACS Premium
📦 What is this software?
Pacs Server by Meddream
⚠️ 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 redirection to phishing sites when users click malicious links.
If Mitigated
Limited impact if proper input validation and output encoding are implemented, though user interaction is still required.
🎯 Exploit Status
Reflected XSS typically requires user interaction (clicking malicious link) but is straightforward to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Contact MedDream vendor for patch information. 2. Apply vendor-provided security update. 3. Test functionality after patching.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement proper input validation and output encoding for the emailfailedjob parameter
Implement server-side validation of emailfailedjob parameter
Apply HTML encoding to all user-controlled output
Content Security Policy
allImplement strict Content Security Policy headers to mitigate XSS impact
Add Content-Security-Policy header with script-src 'self'
🧯 If You Can't Patch
- Implement WAF rules to block malicious XSS payloads in URL parameters
- Disable or restrict access to emailfailedjob functionality if not required
🔍 How to Verify
Check if Vulnerable:
Test emailfailedjob parameter with XSS payloads like <script>alert('XSS')</script> and check if script executesCheck Version:
Check MedDream PACS version in admin interface or configuration filesVerify Fix Applied:
Retest with same XSS payloads and verify scripts do not execute📡 Detection & Monitoring
Log Indicators:
- Unusual URL parameters containing script tags or JavaScript code
- Multiple failed attempts to access emailfailedjob with suspicious parameters
Network Indicators:
- HTTP requests with script tags or JavaScript in URL parameters
- Unusual redirects from emailfailedjob endpoints
SIEM Query:
source="web_logs" AND (url="*emailfailedjob*" AND (url="*<script>*" OR url="*javascript:*"))