CVE-2019-2939 : Exploit Details and Defense Strategies

A security issue in the Core RDBMS component of Oracle Database Server affecting versions 12.2.0.1, 18c, and 19c allows attackers with low privileges to compromise the Core RDBMS, potentially leading to unauthorized data access.

Understanding CVE-2019-2939

This CVE involves a vulnerability in Oracle Database Server's Core RDBMS component, impacting versions 12.2.0.1, 18c, and 19c.

What is CVE-2019-2939?

The vulnerability enables attackers with low privileges and the ability to Create Session, along with network access via OracleNet, to exploit the Core RDBMS, potentially compromising data.

The Impact of CVE-2019-2939

Successful exploitation can allow unauthorized individuals to gain read access to a limited portion of the Core RDBMS data.
The CVSS 3.0 Base Score is 5.0, focusing on confidentiality impacts.

Technical Details of CVE-2019-2939

This section provides technical details of the CVE.

Vulnerability Description

Easily exploitable vulnerability in the Core RDBMS component of Oracle Database Server.
Allows low privileged attackers with Create Session privilege and network access via OracleNet to compromise the Core RDBMS.

Affected Systems and Versions

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

Exploitation Mechanism

Attackers with low privileges and network access via OracleNet can exploit the vulnerability to compromise the Core RDBMS.

Mitigation and Prevention

Steps to address and prevent the CVE.

Immediate Steps to Take

Apply patches provided by Oracle promptly.
Restrict network access to the database server.
Monitor for any unauthorized access attempts.

Long-Term Security Practices

Regularly update and patch Oracle Database installations.
Implement the principle of least privilege for database users.
Conduct regular security assessments and audits.

Patching and Updates

Stay informed about security updates from Oracle.
Apply patches and updates as soon as they are released.