CVE-2020-2734 : Exploit Details and Defense Strategies

A vulnerability in the RDBMS/Optimizer component of Oracle Database Server affecting versions 12.1.0.2, 12.2.0.1, 18c, and 19c allows unauthorized read access to data.

Understanding CVE-2020-2734

This CVE involves a vulnerability in Oracle Database Server that can be exploited by a high-privileged attacker with specific privileges.

What is CVE-2020-2734?

The vulnerability in the RDBMS/Optimizer component of Oracle Database Server allows attackers to compromise the system and gain unauthorized access to data.

The Impact of CVE-2020-2734

CVSS 3.0 Base Score: 2.4 (Confidentiality impacts)
Attack Complexity: Low
Attack Vector: Network
Privileges Required: High
User Interaction: Required
Scope: Unchanged
Successful attacks may lead to unauthorized data access.

Technical Details of CVE-2020-2734

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows a high-privileged attacker with specific privileges to compromise the RDBMS/Optimizer component, leading to unauthorized data access.

Affected Systems and Versions

Oracle Database versions 12.1.0.2, 12.2.0.1, 18c, and 19c are affected.

Exploitation Mechanism

Attackers with Execute on DBMS_SQLTUNE privilege and network access via Oracle Net can exploit this vulnerability.

Mitigation and Prevention

Protecting systems from CVE-2020-2734 is crucial for maintaining security.

Immediate Steps to Take

Apply security patches provided by Oracle promptly.
Monitor and restrict access to privileged accounts.
Educate users on recognizing and avoiding social engineering attacks.

Long-Term Security Practices

Regularly update and patch Oracle Database installations.
Implement network segmentation to limit the impact of potential breaches.

Patching and Updates

Stay informed about security updates from Oracle and apply them as soon as they are available.