CVE-2024-21195
📋 TL;DR
This vulnerability in Oracle BI Publisher allows authenticated attackers with low privileges to access, modify, or delete sensitive data, and cause partial service disruption via HTTP requests. It affects Oracle Analytics versions 7.0.0.0.0, 7.6.0.0.0, and 12.2.1.4.0. Attackers can compromise confidentiality, integrity, and availability of BI Publisher data.
💻 Affected Systems
- Oracle BI Publisher
- Oracle Analytics
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all Oracle BI Publisher accessible data including unauthorized access, modification, deletion, and partial denial of service affecting business operations.
Likely Case
Unauthorized access to critical business intelligence data and potential data manipulation by authenticated low-privilege users.
If Mitigated
Limited impact if proper network segmentation, least privilege access controls, and monitoring are implemented.
🎯 Exploit Status
Oracle describes as 'easily exploitable' with low attack complexity. Requires authenticated access but only low privileges.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply patches from Oracle Critical Patch Update October 2024
Vendor Advisory: https://www.oracle.com/security-alerts/cpuoct2024.html
Restart Required: Yes
Instructions:
1. Download appropriate patches from Oracle Support. 2. Apply patches according to Oracle documentation. 3. Restart affected services. 4. Test functionality.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to Oracle BI Publisher to only trusted IP addresses and networks
Use firewall rules to limit access: iptables -A INPUT -p tcp --dport <BI_Publisher_Port> -s <trusted_network> -j ACCEPT
iptables -A INPUT -p tcp --dport <BI_Publisher_Port> -j DROP
Privilege Reduction
allReview and minimize low-privilege user accounts with access to BI Publisher
Review user accounts: SELECT * FROM BI_PUBLISHER_USERS;
Remove unnecessary accounts: DELETE FROM BI_PUBLISHER_USERS WHERE USER_ID = <unneeded_user>;
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to BI Publisher
- Apply principle of least privilege - review and reduce low-privilege user access to minimum required
🔍 How to Verify
Check if Vulnerable:
Check Oracle BI Publisher version: SELECT * FROM PRODUCT_COMPONENT_VERSION WHERE PRODUCT LIKE '%BI Publisher%';Check Version:
SELECT VERSION FROM PRODUCT_COMPONENT_VERSION WHERE PRODUCT LIKE '%BI Publisher%';Verify Fix Applied:
Verify patch application: Check patch status in Oracle Enterprise Manager or run: opatch lsinventory📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns to layout templates
- Multiple failed authentication attempts followed by successful low-privilege access
- Unexpected data export or modification activities
Network Indicators:
- Unusual HTTP requests to layout template endpoints from low-privilege user accounts
- Traffic patterns indicating data exfiltration
SIEM Query:
source="oracle_bi_publisher" AND (event_type="template_access" OR event_type="data_export") AND user_privilege="low" AND result="success"