CVE-2021-1993 : Security Advisory and Response

A vulnerability has been identified in the Java VM component of Oracle Database Server, affecting versions 12.1.0.2, 12.2.0.1, 18c, and 19c. This vulnerability allows a low privileged attacker with Create Session privilege to compromise Java VM.

Understanding CVE-2021-1993

This section delves into the details of the CVE-2021-1993 vulnerability.

What is CVE-2021-1993?

The vulnerability in the Java VM component of Oracle Database Server impacts multiple versions, potentially leading to unauthorized access to critical data or all Java VM accessible data.

The Impact of CVE-2021-1993

Successful exploitation of this vulnerability can allow attackers to create, delete, or modify critical data. However, it requires human interaction from a person other than the attacker.

Technical Details of CVE-2021-1993

Explore the technical aspects of CVE-2021-1993 to understand the vulnerability further.

Vulnerability Description

The vulnerability enables a low privileged attacker with Create Session privilege and network access via Oracle Net to compromise Java VM, posing integrity risks.

Affected Systems and Versions

Oracle Database Server versions 12.1.0.2, 12.2.0.1, 18c, and 19c are affected by CVE-2021-1993, highlighting the widespread impact.

Exploitation Mechanism

Successful attacks targeting this vulnerability necessitate human interaction from a third party, distinct from the attacker, to achieve unauthorized data access.

Mitigation and Prevention

Discover the steps you can take to mitigate the risks associated with CVE-2021-1993.

Immediate Steps to Take

As an immediate measure, restrict network access privileges and closely monitor Java VM activities to prevent unauthorized access.

Long-Term Security Practices

Implementing strict access controls and regularly updating security configurations can enhance the long-term resilience of your systems.

Patching and Updates

Ensure timely installation of security patches released by Oracle to address CVE-2021-1993 and safeguard your systems from potential exploits.