CVE-2025-2869
📋 TL;DR
This CVE describes a reflected Cross-Site Scripting (XSS) vulnerability in the Clinic Queuing System version 1.0, allowing attackers to inject and execute malicious JavaScript in victims' browsers via a crafted URL with the id parameter in /manage_user.php. It affects users of the vulnerable software who access malicious links, potentially leading to session hijacking or data theft.
💻 Affected Systems
- Clinic Queuing System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could steal session cookies, redirect users to phishing sites, or perform actions on behalf of the victim, leading to full account compromise and data breaches.
Likely Case
Attackers may use this to steal session tokens or credentials, enabling unauthorized access to user accounts within the system.
If Mitigated
With proper input validation and output encoding, the risk is minimized, preventing script execution and limiting impact to minor disruptions.
🎯 Exploit Status
Exploitation is straightforward as it involves crafting a URL with malicious input, but no public proof-of-concept has been identified in the provided reference.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-clinic-queuing-system
Restart Required: No
Instructions:
No official patch is available; refer to the vendor advisory for updates and consider applying workarounds or upgrading if a fixed version is released.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side validation and sanitization of the id parameter in /manage_user.php to block malicious scripts.
Modify /manage_user.php to filter or encode user input, e.g., using functions like htmlspecialchars() in PHP.
Web Application Firewall (WAF) Rule
allDeploy a WAF to detect and block XSS payloads in URL parameters.
Configure WAF rules to monitor and block requests containing script tags or suspicious patterns in the id parameter.
🧯 If You Can't Patch
- Restrict access to /manage_user.php to trusted users only using network controls or authentication.
- Monitor logs for unusual activity related to the id parameter and implement user awareness training to avoid clicking suspicious links.
🔍 How to Verify
Check if Vulnerable:
Test by accessing /manage_user.php with a payload like <script>alert('XSS')</script> in the id parameter and check if the script executes in the browser.Check Version:
Check the software version in its configuration files or interface; for Clinic Queuing System, this may involve reviewing documentation or source code.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 requests to /manage_user.php with unusual or long id parameters containing script-like strings.
Network Indicators:
- Network traffic with URLs containing encoded JavaScript in the id parameter, often via GET requests.
SIEM Query:
Example: search for 'id=<script>' OR 'id=javascript:' in web server logs for /manage_user.php.