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CVE-2021-2319

9.1 CRITICAL

📋 TL;DR

A high-severity vulnerability in Oracle Cloud Infrastructure Storage Gateway Management Console allows authenticated attackers with network access via HTTP to completely compromise the system. This affects all versions prior to 1.4. Successful exploitation can lead to full system takeover with potential impact on connected systems.

💻 Affected Systems

Products:
  • Oracle Cloud Infrastructure Storage Gateway
Versions: All versions prior to 1.4
Operating Systems: Not specified - product-specific
Default Config Vulnerable: ⚠️ Yes
Notes: Requires high-privileged attacker with HTTP network access to Management Console component.

📦 What is this software?

Cloud Infrastructure Storage Gateway by Oracle

View all CVEs affecting Cloud Infrastructure Storage Gateway →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of Oracle Cloud Infrastructure Storage Gateway leading to data exfiltration, system destruction, and lateral movement to connected systems.

🟠

Likely Case

Privileged attacker gains full control over the Storage Gateway, potentially accessing sensitive data and disrupting operations.

🟢

If Mitigated

Limited impact if proper network segmentation and access controls prevent HTTP access to the Management Console.

🌐 Internet-Facing: HIGH - HTTP-accessible interface with high-privilege requirements but critical impact if exposed.
🏢 Internal Only: HIGH - Even internally, high-privileged attackers can exploit this for complete system compromise.

🎯 Exploit Status

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

Oracle describes as 'easily exploitable' but requires high-privileged access. No public exploit details available.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.4 or later

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

Restart Required: Yes

Instructions:

1. Download latest version from Oracle downloads page. 2. Backup current configuration. 3. Install version 1.4 or later. 4. Restart the Storage Gateway service. 5. Verify successful upgrade.

🔧 Temporary Workarounds

Network Segmentation

all

Restrict HTTP access to Storage Gateway Management Console to only trusted administrative networks

Access Control Hardening

all

Review and minimize high-privilege accounts with access to the Management Console

🧯 If You Can't Patch

  • Implement strict network segmentation to isolate Storage Gateway from untrusted networks
  • Enforce multi-factor authentication and strict access controls for administrative accounts

🔍 How to Verify

Check if Vulnerable:

Check Storage Gateway version via Management Console interface or configuration files

Check Version:

Check product documentation for specific version verification commands

Verify Fix Applied:

Confirm version is 1.4 or later in Management Console or via version check command

📡 Detection & Monitoring

Log Indicators:

  • Unusual administrative access patterns
  • Unexpected configuration changes
  • Multiple failed then successful authentication attempts

Network Indicators:

  • HTTP traffic to Management Console from unusual sources
  • Unexpected administrative protocol usage

SIEM Query:

source="storage_gateway" AND (event_type="admin_access" OR event_type="config_change") AND user_privilege="high"

📊 Metadata

CVE ID: CVE-2021-2319
CVSS v3 Score: 9.1 (CRITICAL)
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Published: April 22, 2021
Last Updated: November 21, 2024

🔗 References

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