CVE-2025-58089
📋 TL;DR
This vulnerability allows attackers to execute arbitrary JavaScript code in users' browsers by tricking them into clicking specially crafted malicious URLs targeting the config.php file in MedDream PACS Premium. It affects systems running version 7.3.6.870, potentially compromising user sessions and data integrity.
💻 Affected Systems
- MedDream PACS Premium
📦 What is this software?
Pacs Server by Meddream
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users, leading to full account compromise and data theft.
Likely Case
Attackers typically use this to hijack user sessions, deface web pages, or deliver malware via phishing campaigns targeting users of the vulnerable system.
If Mitigated
With proper input validation and output encoding, the risk is reduced to minimal, preventing script execution even if malicious input is submitted.
🎯 Exploit Status
Exploitation requires user interaction (e.g., clicking a malicious link), but no authentication is needed, making it straightforward for attackers to craft and distribute payloads.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://talosintelligence.com/vulnerability_reports/TALOS-2025-2271
Restart Required: No
Instructions:
Check the vendor's website or security advisories for an official patch. If available, apply it according to vendor instructions, typically by updating to a fixed version.
🔧 Temporary Workarounds
Implement Input Validation and Output Encoding
allSanitize and encode user input in the config.php file, especially the longtermdir parameter, to prevent script execution.
Modify config.php to use functions like htmlspecialchars() or similar for output encoding.
Use Web Application Firewall (WAF)
allDeploy a WAF to block malicious requests containing XSS payloads targeting the vulnerable parameter.
Configure WAF rules to filter requests with suspicious patterns in the longtermdir parameter.
🧯 If You Can't Patch
- Restrict access to the config.php functionality to trusted users only, using network segmentation or authentication controls.
- Monitor logs for unusual activity related to the longtermdir parameter and implement user awareness training to avoid clicking suspicious links.
🔍 How to Verify
Check if Vulnerable:
Test by submitting a payload like <script>alert('XSS')</script> in the longtermdir parameter via a crafted URL and check if it executes in the browser.Check Version:
Check the MedDream PACS Premium version in the admin interface or configuration files; command may vary by installation.Verify Fix Applied:
After applying fixes, retest with the same payload to ensure no script execution occurs and that input is properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Log entries showing malicious strings in the longtermdir parameter, such as script tags or JavaScript code.
Network Indicators:
- HTTP requests with suspicious payloads in the URL parameters targeting config.php.
SIEM Query:
Example: 'source="web_logs" AND uri="/config.php" AND param="longtermdir" AND (payload="<script>" OR payload="javascript:")'