CVE-2023-2950
📋 TL;DR
CVE-2023-2950 is an improper authorization vulnerability in OpenEMR that allows authenticated users to access administrative functions without proper permissions. This affects all OpenEMR installations prior to version 7.0.1. The vulnerability enables privilege escalation within the healthcare management system.
💻 Affected Systems
- OpenEMR
📦 What is this software?
Openemr by Open Emr
⚠️ Risk & Real-World Impact
Worst Case
An authenticated attacker could gain administrative privileges, potentially accessing sensitive patient health records, modifying medical data, or disrupting healthcare operations.
Likely Case
Malicious insiders or compromised user accounts could escalate privileges to access restricted administrative functions and sensitive patient information.
If Mitigated
With proper network segmentation and strict access controls, impact would be limited to the OpenEMR application layer only.
🎯 Exploit Status
Exploit details are publicly available through the huntr.dev bounty program. Requires authenticated user credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.0.1
Vendor Advisory: https://github.com/openemr/openemr/commit/abee8d2606c706176818de25eb88a2d08b8f7fa4
Restart Required: No
Instructions:
1. Backup your OpenEMR installation and database. 2. Download OpenEMR version 7.0.1 or later from the official repository. 3. Replace the vulnerable files with patched versions. 4. Verify the patch is applied by checking the version.
🔧 Temporary Workarounds
Restrict User Privileges
allTemporarily reduce user privileges to minimum required levels to limit potential damage from privilege escalation.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate OpenEMR from other critical systems
- Enable detailed audit logging and monitor for unauthorized access attempts to administrative functions
🔍 How to Verify
Check if Vulnerable:
Check OpenEMR version in the application interface or by examining the source code version files. If version is below 7.0.1, the system is vulnerable.Check Version:
Check the OpenEMR interface or examine the version.php file in the installation directory.Verify Fix Applied:
Verify the version is 7.0.1 or higher and test that non-admin users cannot access administrative functions they shouldn't have permissions for.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to administrative URLs by non-admin users
- User privilege escalation events in application logs
Network Indicators:
- Unusual patterns of requests to administrative endpoints from non-admin user accounts
SIEM Query:
source="openemr_logs" AND (url="*admin*" OR url="*manage*") AND user_role!="admin"