CVE-2021-2244 – This critical vulnerability in Oracle Hyperion ... (How to Fix)

Q: What is the severity of CVE-2021-2244?

CVE-2021-2244 has a CVSS score of 10.0 (CRITICAL). This critical vulnerability in Oracle Hyperion Analytic Provider Services and Essbase Analytic Provider Services allows unauthenticated remote attackers to completely compromise affected systems via HTTP. Organizations using affected versions of these Oracle business intelligence products are at risk. The vulnerability requires no authentication and can lead to full system takeover.

📋 TL;DR

This critical vulnerability in Oracle Hyperion Analytic Provider Services and Essbase Analytic Provider Services allows unauthenticated remote attackers to completely compromise affected systems via HTTP. Organizations using affected versions of these Oracle business intelligence products are at risk. The vulnerability requires no authentication and can lead to full system takeover.

💻 Affected Systems

Products:

Oracle Hyperion Analytic Provider Services
Oracle Essbase Analytic Provider Services

Versions: Hyperion Analytic Provider Services 11.1.2.4 and 12.2.1.4; Essbase Analytic Provider Services 21.2

Operating Systems: All supported platforms for these Oracle products

Default Config Vulnerable: ⚠️ Yes

Notes: Affects the JAPI component specifically. The vulnerability exists in the HTTP interface of these services.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of the affected Oracle services leading to data theft, system manipulation, and potential lateral movement to other connected systems.

🟠

Likely Case

Remote code execution leading to data exfiltration, service disruption, and installation of persistent backdoors.

🟢

If Mitigated

Limited impact if systems are isolated behind firewalls with strict network segmentation and access controls.

🌐 Internet-Facing: HIGH - CVSS 10.0 with network attack vector and no authentication required makes internet-facing systems extremely vulnerable.

🏢 Internal Only: HIGH - Even internally, the lack of authentication requirement makes this easily exploitable by any internal attacker.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

CVSS indicates 'easily exploitable' with no authentication required and no user interaction needed. While no public PoC is confirmed, the high score suggests weaponization is likely.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Apply patches from Oracle Critical Patch Updates for April 2021 and July 2021

Vendor Advisory: https://www.oracle.com/security-alerts/cpuapr2021.html

Restart Required: Yes

Instructions:

1. Download appropriate patches from Oracle Support. 2. Apply patches according to Oracle documentation. 3. Restart affected services. 4. Verify patch application.

🔧 Temporary Workarounds

Network Segmentation

all

Restrict network access to affected services using firewalls or network security groups

Disable Unnecessary Services

all

If not required, disable or shut down affected Analytic Provider Services

🧯 If You Can't Patch

Isolate affected systems in a dedicated network segment with strict firewall rules
Implement network-based intrusion detection/prevention systems to monitor for exploitation attempts

🔍 How to Verify

Check if Vulnerable:

Check Oracle product version against affected versions list. Review system logs for unusual HTTP requests to JAPI endpoints.

Check Version:

Oracle-specific commands vary by installation. Typically check through Oracle Enterprise Manager or product-specific version queries.

Verify Fix Applied:

Verify patch application through Oracle patch management tools and confirm version is no longer in affected range.

📡 Detection & Monitoring

Log Indicators:

Unusual HTTP requests to JAPI endpoints
Unexpected process creation from Analytic Provider Services
Authentication bypass attempts

Network Indicators:

Unusual outbound connections from affected systems
HTTP traffic patterns to JAPI interfaces from unexpected sources

SIEM Query:

source="oracle-hyperion" AND (http_uri="*japi*" OR process="*unusual*")

📊 Metadata

CVE ID: CVE-2021-2244

CVSS v3 Score: 10.0 (CRITICAL)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Published: April 22, 2021

Last Updated: November 21, 2024

🔗 References

https://www.oracle.com/security-alerts/cpuapr2021.html Patch,Vendor Advisory
https://www.oracle.com/security-alerts/cpujul2021.html Vendor Advisory
https://www.oracle.com/security-alerts/cpuapr2021.html Patch,Vendor Advisory
https://www.oracle.com/security-alerts/cpujul2021.html Vendor Advisory

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