CVE-2021-1997
📋 TL;DR
This vulnerability in Oracle Hospitality Reporting and Analytics allows low-privileged attackers with network access via HTTP to compromise the system, leading to unauthorized creation, deletion, or modification of critical data, as well as unauthorized access to sensitive information. It affects Oracle Food and Beverage Applications version 9.1.0, specifically the Report component, and is easily exploitable due to its low attack complexity.
💻 Affected Systems
- Oracle Hospitality Reporting and Analytics
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all accessible data, including critical information, with attackers able to create, delete, or modify data at will, potentially leading to data breaches, system manipulation, or service disruption.
Likely Case
Unauthorized access to and tampering with sensitive data, such as customer or operational records, due to the low privilege requirement and network accessibility, resulting in data integrity and confidentiality issues.
If Mitigated
Limited impact if proper network segmentation, access controls, and monitoring are in place, but residual risk remains if the vulnerability is not patched.
🎯 Exploit Status
Exploitation requires low-privileged access via HTTP, but no public proof-of-concept or weaponization details are available; based on CVSS, it is easily exploitable.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Oracle's security advisory for specific patch details, as updates may be included in later releases or patches.
Vendor Advisory: https://www.oracle.com/security-alerts/cpujan2021.html
Restart Required: Yes
Instructions:
1. Review Oracle's security advisory for patch availability. 2. Apply the recommended patch or update to a fixed version. 3. Restart the affected Oracle Hospitality Reporting and Analytics service to apply changes. 4. Verify the patch installation and test functionality.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to the Oracle Hospitality Reporting and Analytics service to only trusted IP addresses or internal networks to reduce attack surface.
Use firewall rules (e.g., iptables on Linux or Windows Firewall) to block unauthorized HTTP access to the service port.
Privilege Minimization
allReduce user privileges to the minimum necessary for operations to limit the impact if exploitation occurs.
Review and adjust user roles in Oracle applications to enforce least privilege principles.
🧯 If You Can't Patch
- Implement strict network segmentation and access controls to isolate the vulnerable system from untrusted networks.
- Enhance monitoring and logging for suspicious activities, such as unauthorized data access or modification attempts, and set up alerts for immediate response.
🔍 How to Verify
Check if Vulnerable:
Check the version of Oracle Hospitality Reporting and Analytics; if it is 9.1.0, the system is vulnerable. Use Oracle application logs or version query commands specific to the installation.Check Version:
Consult Oracle documentation for version check commands, typically via application interfaces or configuration files (e.g., check release notes or use Oracle-specific queries).Verify Fix Applied:
After patching, verify the version has been updated to a non-vulnerable release and test functionality to ensure no regression; monitor for any exploit attempts in logs.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests to Report components, unauthorized access logs, or data modification events in Oracle application logs.
Network Indicators:
- Suspicious HTTP traffic patterns to the Oracle service port, especially from low-privileged user accounts or unexpected sources.
SIEM Query:
Example: 'source="oracle_logs" AND (event_type="data_modification" OR user_privilege="low") AND http_method="POST"'