CVE-2023-21923
📋 TL;DR
This vulnerability in Oracle Health Sciences InForm allows authenticated attackers with low privileges to perform unauthorized data manipulation, access sensitive information, or cause partial denial of service via HTTP. Affected organizations are those running Oracle Health Sciences InForm versions prior to 6.3.1.3 or 7.0.0.1.
💻 Affected Systems
- Oracle Health Sciences InForm
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all InForm accessible data including creation, deletion, modification of critical clinical trial data, plus partial service disruption.
Likely Case
Unauthorized access to sensitive clinical trial data and modification of study information by authenticated low-privilege users.
If Mitigated
Limited impact due to network segmentation, strong authentication controls, and minimal user privileges.
🎯 Exploit Status
CVSS indicates easily exploitable with low attack complexity. Requires authenticated access but only low privileges.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.3.1.3 or 7.0.0.1
Vendor Advisory: https://www.oracle.com/security-alerts/cpuapr2023.html
Restart Required: Yes
Instructions:
1. Download patches from Oracle Support. 2. Apply patch 6.3.1.3 for versions <6.3.1.3 or 7.0.0.1 for versions <7.0.0.1. 3. Restart InForm services. 4. Verify patch application.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to InForm servers to only authorized users and systems
firewall rules to limit HTTP access to specific IP ranges
Privilege Reduction
allReview and minimize low-privilege user accounts and permissions
audit user accounts with low privileges
remove unnecessary accounts
🧯 If You Can't Patch
- Implement strict network access controls and segment InForm servers
- Enforce principle of least privilege and audit all low-privilege user activities
🔍 How to Verify
Check if Vulnerable:
Check InForm version via administration console or configuration files. Compare against affected versions.Check Version:
Check InForm administration console or consult Oracle documentation for version check commands specific to your deployment.Verify Fix Applied:
Verify version is 6.3.1.3 or higher (for 6.x) or 7.0.0.1 or higher (for 7.x) after patch application.📡 Detection & Monitoring
Log Indicators:
- Unusual data access patterns by low-privilege users
- Multiple failed authentication attempts followed by successful low-privilege access
- Unexpected data modification events
Network Indicators:
- HTTP requests to InForm endpoints from unexpected sources
- Unusual data volume transfers
SIEM Query:
source="inform-logs" AND (event_type="data_modification" OR event_type="data_access") AND user_privilege="low" AND result="success"