CVE-2021-2330 : What You Need to Know

This CVE-2021-2330 article provides an overview of a vulnerability in the Core RDBMS component of Oracle Database Server version 19c. It explains the impact, technical details, and mitigation steps.

Understanding CVE-2021-2330

This section delves into the details of the vulnerability identified as CVE-2021-2330 in Oracle Database Server version 19c.

What is CVE-2021-2330?

The vulnerability lies in the Core RDBMS component of Oracle Database Server 19c. It is an easily exploitable flaw that allows a low-privileged attacker with Create Table privilege and network access via Oracle Net to compromise the Core RDBMS. Successful exploitation could lead to a partial denial of service (DOS) within the Core RDBMS.

The Impact of CVE-2021-2330

The CVSS 3.1 Base Score of this vulnerability is 4.3, indicating medium severity with low availability impact. Attack complexity is low, requiring low privileges, and no user interaction. The vulnerability can be exploited over the network.

Technical Details of CVE-2021-2330

This section outlines the technical aspects of CVE-2021-2330, including the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability in Oracle Database Server 19c allows a low-privileged attacker to compromise the Core RDBMS using network access via Oracle Net. Successful attacks may lead to an unauthorized partial denial of service within the Core RDBMS.

Affected Systems and Versions

The affected product is the Database - Enterprise Edition by Oracle Corporation, specifically version 19c.

Exploitation Mechanism

Exploitation of this vulnerability requires a low-privileged attacker with the Create Table privilege and network access via Oracle Net to exploit the Core RDBMS component.

Mitigation and Prevention

In this section, we discuss the steps to mitigate and prevent the exploitation of CVE-2021-2330.

Immediate Steps to Take

It is recommended to apply the necessary security patches provided by Oracle Corporation promptly. Network access to Oracle Net should be restricted to authorized users only.

Long-Term Security Practices

Regularly update and patch the Oracle Database Server to the latest version to prevent similar vulnerabilities. Implement the principle of least privilege to restrict user access.

Patching and Updates

Stay informed about security alerts and updates from Oracle Corporation to address vulnerabilities promptly and ensure a secure database environment.