CVE-2023-38048
📋 TL;DR
This CVE describes a Broken Object Level Authorization (BOLA) vulnerability in Easy!Appointments that allows low-privileged users to access, modify, or delete privileged provider accounts. Attackers can escalate privileges and manipulate sensitive data. All Easy!Appointments instances with vulnerable versions are affected.
💻 Affected Systems
- Easy!Appointments
📦 What is this software?
Easyappointments by Easyappointments
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all provider accounts, unauthorized access to sensitive appointment data, and potential service disruption through account deletion.
Likely Case
Unauthorized access to provider data, modification of appointment schedules, and potential data exfiltration.
If Mitigated
Limited impact with proper authorization checks and access controls in place.
🎯 Exploit Status
Requires authenticated low-privilege user account but exploitation is straightforward via API manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check latest release on GitHub repository
Vendor Advisory: https://github.com/alextselegidis/easyappointments
Restart Required: No
Instructions:
1. Update to latest Easy!Appointments version from GitHub. 2. Verify authorization checks are implemented for /providers/{providerId} endpoints. 3. Test API endpoints for proper access controls.
🔧 Temporary Workarounds
Implement API Gateway Authorization
allAdd authorization layer before API endpoints to validate user permissions
Restrict API Access
allLimit access to /providers endpoints to admin users only
🧯 If You Can't Patch
- Implement strict access controls and audit all provider data access
- Monitor API logs for unauthorized access to /providers endpoints
🔍 How to Verify
Check if Vulnerable:
Test if low-privilege user can access /providers/{providerId} endpoints with different provider IDsCheck Version:
Check Easy!Appointments version in admin panel or configuration filesVerify Fix Applied:
Verify low-privilege users cannot access/modify/delete provider accounts via API📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to /providers endpoints
- Provider account modifications from non-admin users
Network Indicators:
- API calls to /providers/{providerId} from low-privilege accounts
SIEM Query:
source="api_logs" AND (uri="/providers/*" AND user_role!="admin")