CVE-2023-37687
📋 TL;DR
Online Nurse Hiring System v1.0 contains a stored cross-site scripting (XSS) vulnerability in the Admin portal's View Request of Nurse Page. This allows attackers to inject malicious scripts that execute when administrators view nurse requests, potentially compromising admin sessions and system integrity. Only systems running this specific software version are affected.
💻 Affected Systems
- Online Nurse Hiring System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal admin session cookies, gain full administrative access, pivot to other systems, install backdoors, or exfiltrate sensitive nurse and patient data.
Likely Case
Attackers would steal admin credentials, modify system data, create unauthorized accounts, or redirect users to malicious sites.
If Mitigated
With proper input validation and output encoding, the vulnerability would be neutralized, preventing script execution while maintaining functionality.
🎯 Exploit Status
Exploitation requires ability to create or modify nurse requests, which typically requires some level of access. The vulnerability is in the view/display functionality rather than input submission.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Implement proper input validation on all nurse request fields. 2. Apply output encoding when displaying nurse request data. 3. Sanitize all user-controlled data before rendering in HTML context.
🔧 Temporary Workarounds
Input Validation Filter
allAdd server-side validation to reject or sanitize HTML/script content in nurse request fields
Implement PHP filter: htmlspecialchars($input, ENT_QUOTES, 'UTF-8') for all displayed fields
Content Security Policy
allImplement CSP headers to restrict script execution sources
Header set Content-Security-Policy "default-src 'self'; script-src 'self'" in .htaccess or server config
🧯 If You Can't Patch
- Restrict access to Admin portal using network segmentation and IP whitelisting
- Implement web application firewall (WAF) rules to block XSS payloads in nurse request parameters
🔍 How to Verify
Check if Vulnerable:
Test by submitting nurse requests containing <script>alert('XSS')</script> in fields, then check if script executes when viewing in Admin portalCheck Version:
Check application version in admin panel or readme files; system is vulnerable if version is exactly 1.0Verify Fix Applied:
Repeat XSS test payloads; scripts should be displayed as plain text or sanitized, not executed📡 Detection & Monitoring
Log Indicators:
- Unusual nurse request submissions with script tags or JavaScript code
- Multiple failed login attempts to admin portal following nurse request submissions
Network Indicators:
- Outbound connections to suspicious domains from admin workstations
- Unusual traffic patterns to nurse request submission endpoints
SIEM Query:
source="web_logs" AND (uri="/admin/view-nurse-request" OR uri="/submit-nurse-request") AND (message="*<script>*" OR message="*javascript:*")