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CVE-2021-2237

8.1 HIGH

📋 TL;DR

This vulnerability in Oracle General Ledger's Account Hierarchy Manager allows authenticated attackers with network access via HTTP to perform unauthorized data manipulation and access. It affects Oracle E-Business Suite versions 12.1.1 through 12.1.3. Attackers can create, delete, or modify critical financial data and access sensitive information.

💻 Affected Systems

Products:
  • Oracle E-Business Suite - General Ledger
Versions: 12.1.1-12.1.3
Operating Systems: All platforms running Oracle E-Business Suite
Default Config Vulnerable: ⚠️ Yes
Notes: Requires Oracle General Ledger component with Account Hierarchy Manager functionality enabled.

📦 What is this software?

General Ledger by Oracle

View all CVEs affecting General Ledger →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of Oracle General Ledger data including unauthorized financial transactions, data destruction, and exposure of all sensitive financial records.

🟠

Likely Case

Unauthorized modification of account hierarchies and financial data, potentially leading to financial fraud or data integrity issues.

🟢

If Mitigated

Limited impact with proper network segmentation, strong authentication controls, and monitoring of privileged account activities.

🌐 Internet-Facing: HIGH
🏢 Internal Only: HIGH

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: LOW

Requires low-privileged authenticated access via HTTP. No public exploit code available as of knowledge cutoff.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Apply Oracle Critical Patch Update for April 2021 or later

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

Restart Required: Yes

Instructions:

1. Download appropriate patch from Oracle Support. 2. Apply patch following Oracle E-Business Suite patching procedures. 3. Restart affected services. 4. Test functionality post-patch.

🔧 Temporary Workarounds

Network Segmentation

all

Restrict network access to Oracle E-Business Suite to only trusted IP addresses and networks.

Privilege Reduction

all

Review and minimize user privileges in Oracle General Ledger, especially for Account Hierarchy Manager functions.

🧯 If You Can't Patch

  • Implement strict network access controls and firewall rules to limit HTTP access to Oracle E-Business Suite
  • Enable detailed auditing and monitoring of all Account Hierarchy Manager activities and financial data changes

🔍 How to Verify

Check if Vulnerable:

Check Oracle E-Business Suite version and patch level. Vulnerable if running General Ledger 12.1.1-12.1.3 without April 2021 CPU.

Check Version:

SELECT RELEASE_NAME FROM FND_PRODUCT_GROUPS;

Verify Fix Applied:

Verify patch application via Oracle OPatch utility and confirm version is updated beyond vulnerable range.

📡 Detection & Monitoring

Log Indicators:

  • Unusual Account Hierarchy Manager activity
  • Unauthorized financial data modifications
  • Multiple failed authentication attempts followed by successful access

Network Indicators:

  • HTTP requests to Account Hierarchy Manager endpoints from unexpected sources
  • Unusual patterns in financial data access

SIEM Query:

source="oracle_ebs" AND (event_type="account_hierarchy_modification" OR module="General Ledger") AND user_privilege="LOW"

📊 Metadata

CVE ID: CVE-2021-2237
CVSS v3 Score: 8.1 (HIGH)
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Published: April 22, 2021
Last Updated: November 21, 2024

🔗 References

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