CVE-2021-2273
📋 TL;DR
This vulnerability in Oracle Legal Entity Configurator allows authenticated attackers with low privileges to perform unauthorized data manipulation and access via HTTP. It affects Oracle E-Business Suite versions 12.1.1 through 12.1.3. Attackers can create, delete, or modify critical data and access sensitive information.
💻 Affected Systems
- Oracle E-Business Suite - Legal Entity Configurator
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all Oracle Legal Entity Configurator data including unauthorized creation, deletion, modification, and full data access, potentially leading to financial fraud, regulatory violations, and business disruption.
Likely Case
Unauthorized data manipulation and access to sensitive legal entity configuration data, potentially affecting contract management, compliance, and financial reporting.
If Mitigated
Limited impact if proper network segmentation, least privilege access controls, and monitoring are implemented to detect and block exploitation attempts.
🎯 Exploit Status
Oracle describes it as 'easily exploitable' and requires only low privileges with network access via HTTP. No public exploit code is known as of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply Oracle Critical Patch Update (CPU) for April 2021 or later
Vendor Advisory: https://www.oracle.com/security-alerts/cpuapr2021.html
Restart Required: Yes
Instructions:
1. Download the appropriate Critical Patch Update from Oracle Support. 2. Apply the patch following Oracle's patching procedures for E-Business Suite. 3. Restart affected services. 4. Test functionality in a non-production environment first.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to Oracle Legal Entity Configurator to only trusted IP addresses and networks
Configure firewall rules to limit access to Oracle E-Business Suite HTTP ports (typically 8000, 443)
Privilege Reduction
allReview and minimize user privileges to the minimum required for business functions
Use Oracle E-Business Suite security administration tools to audit and reduce user privileges
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to Oracle E-Business Suite
- Enhance monitoring and logging of all access to Legal Entity Configurator components and review for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check Oracle E-Business Suite version and patch level. If running versions 12.1.1-12.1.3 without April 2021 CPU or later, system is vulnerable.Check Version:
Check Oracle Applications version via SQL: SELECT RELEASE_NAME FROM FND_PRODUCT_GROUPS;Verify Fix Applied:
Verify patch application through Oracle's patch management tools and confirm version/patch level post-application.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests to Create Contracts component
- Multiple failed authentication attempts followed by successful low-privilege access
- Unexpected data modifications in Legal Entity Configurator tables
Network Indicators:
- HTTP traffic to Oracle E-Business Suite from unexpected sources
- Patterns of data manipulation requests from low-privilege accounts
SIEM Query:
source="oracle-ebs" AND (uri="*CreateContracts*" OR component="Legal Entity Configurator") AND (action="modify" OR action="create" OR action="delete") FROM low_privilege_accounts