CVE-2019-2749 : Exploit Details and Defense Strategies

A security weakness has been identified in the Java VM component of Oracle Database Server, affecting versions 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c, and 19c. This vulnerability could be exploited by a low privileged attacker with specific privileges, potentially leading to unauthorized access and Denial of Service (DOS) conditions.

Understanding CVE-2019-2749

This CVE pertains to a vulnerability in the Java VM component of Oracle Database Server, impacting various versions.

What is CVE-2019-2749?

The vulnerability allows a low privileged attacker with specific privileges to compromise the Java VM component.
Successful exploitation can result in unauthorized access to critical data and the ability to cause a Denial of Service (DOS) condition.

The Impact of CVE-2019-2749

Successful exploitation could lead to unauthorized access for creating, deleting, or modifying critical data within the Java VM.
It can also result in a hang or repeated crashes of the Java VM, causing a Denial of Service (DOS) condition.
The CVSS 3.0 Base Score for this vulnerability is 6.8, with significant impacts on integrity and availability.

Technical Details of CVE-2019-2749

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability exists in the Java VM component of Oracle Database Server.

Affected Systems and Versions

Oracle Database versions 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c, and 19c are affected.

Exploitation Mechanism

A low privileged attacker with specific privileges and network access through various protocols can exploit this vulnerability.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2019-2749.

Immediate Steps to Take

Apply security patches provided by Oracle promptly.
Monitor network traffic for any suspicious activity.
Restrict network access to the affected systems.

Long-Term Security Practices

Regularly update and patch Oracle Database installations.
Implement the principle of least privilege to restrict unnecessary access.
Conduct regular security audits and assessments.

Patching and Updates

Stay informed about security updates and patches released by Oracle.
Ensure timely application of patches to mitigate the vulnerability.