CVE-2022-2824
📋 TL;DR
This vulnerability allows attackers to bypass authorization controls in OpenEMR by manipulating user-controlled keys, potentially accessing unauthorized data or functions. It affects all OpenEMR installations prior to version 7.0.0.1. Healthcare organizations using vulnerable versions are at risk of data breaches.
💻 Affected Systems
- OpenEMR
📦 What is this software?
Openemr by Open Emr
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of patient health records, unauthorized access to sensitive medical data, and potential manipulation of medical records leading to patient harm.
Likely Case
Unauthorized access to patient records, exposure of protected health information (PHI), and potential HIPAA violations.
If Mitigated
Limited impact with proper access controls, but still represents a compliance violation and potential data exposure.
🎯 Exploit Status
Exploitation requires some level of access but is technically straightforward once the vulnerability is understood.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.0.0.1 and later
Vendor Advisory: https://github.com/openemr/openemr/commit/c5d99452c173ef21a8e2241e2bbf4b66e2d7fe11
Restart Required: Yes
Instructions:
1. Backup your OpenEMR database and files. 2. Download OpenEMR 7.0.0.1 or later from the official repository. 3. Follow the OpenEMR upgrade documentation for your specific deployment. 4. Restart the web server and verify functionality.
🔧 Temporary Workarounds
Temporary Access Restriction
allImplement strict network access controls to limit who can access the OpenEMR application while patching is arranged.
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to OpenEMR only to authorized users and systems.
- Enable detailed audit logging and monitor for unauthorized access attempts to patient records.
🔍 How to Verify
Check if Vulnerable:
Check your OpenEMR version by navigating to Administration > Version in the OpenEMR interface or checking the version.php file.Check Version:
grep -i 'version' /path/to/openemr/version.phpVerify Fix Applied:
Verify the version is 7.0.0.1 or later and test authorization controls for user-controlled key parameters.📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns to patient records
- Failed authorization attempts followed by successful access
- Access to records by users outside their normal scope
Network Indicators:
- Unusual API calls with manipulated parameter values
- Requests containing unexpected key/value pairs in authorization contexts
SIEM Query:
source="openemr_logs" AND (event_type="authorization_failure" OR event_type="record_access") | stats count by user, patient_id