CVE-2021-2089 – This vulnerability in Oracle iStore allows unau... (How to Fix)

Q: What is the severity of CVE-2021-2089?

CVE-2021-2089 has a CVSS score of 8.2 (HIGH). This vulnerability in Oracle iStore allows unauthenticated attackers to access sensitive data or modify information via HTTP requests. It affects Oracle E-Business Suite versions 12.1.1-12.1.3 and 12.2.3-12.2.10. Successful exploitation requires human interaction from someone other than the attacker.

📋 TL;DR

This vulnerability in Oracle iStore allows unauthenticated attackers to access sensitive data or modify information via HTTP requests. It affects Oracle E-Business Suite versions 12.1.1-12.1.3 and 12.2.3-12.2.10. Successful exploitation requires human interaction from someone other than the attacker.

💻 Affected Systems

Products:

Oracle E-Business Suite iStore

Versions: 12.1.1-12.1.3 and 12.2.3-12.2.10

Operating Systems: Any OS running Oracle E-Business Suite

Default Config Vulnerable: ⚠️ Yes

Notes: Requires iStore component to be installed and accessible via HTTP.

📦 What is this software?

Istore by Oracle

View all CVEs affecting Istore →

Istore by Oracle

View all CVEs affecting Istore →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete unauthorized access to all Oracle iStore data including critical business information, plus ability to modify or delete data, potentially affecting other connected products.

🟠

Likely Case

Unauthorized access to sensitive customer or business data stored in iStore, with potential data modification in some areas.

🟢

If Mitigated

Limited impact with proper network segmentation, access controls, and user awareness training to prevent human interaction exploitation.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Exploitation requires human interaction (UI redirection or similar), making automated attacks more difficult but social engineering attacks possible.

🛠️ Fix & Mitigation

✅ Official Fix

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

Vendor Advisory: https://www.oracle.com/security-alerts/cpujan2021.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.

🔧 Temporary Workarounds

Network Segmentation

all

Restrict network access to Oracle iStore to only trusted sources

Web Application Firewall

all

Implement WAF rules to block suspicious HTTP requests to iStore endpoints

🧯 If You Can't Patch

Implement strict network access controls to limit iStore exposure
Monitor iStore logs for unusual access patterns and implement user awareness training

🔍 How to Verify

Check if Vulnerable:

Check Oracle E-Business Suite version and iStore component installation status

Check Version:

Check Oracle application version through Oracle applications manager or database queries specific to E-Business Suite

Verify Fix Applied:

Verify patch application via Oracle OPatch utility and check version post-patching

📡 Detection & Monitoring

Log Indicators:

Unusual HTTP requests to iStore endpoints from unauthenticated sources
Unexpected data access patterns in iStore logs

Network Indicators:

HTTP traffic to iStore from unexpected sources
Patterns of requests that trigger the vulnerability

SIEM Query:

source="oracle-istore" AND (http_method="POST" OR http_method="GET") AND user="anonymous" AND status="200"

📊 Metadata

CVE ID: CVE-2021-2089

CVSS v3 Score: 8.2 (HIGH)

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

Published: January 20, 2021

Last Updated: November 21, 2024

🔗 References

https://www.oracle.com/security-alerts/cpujan2021.html Vendor Advisory
https://www.oracle.com/security-alerts/cpujan2021.html Vendor Advisory

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