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CVE-2021-35619 : Exploit Details and Defense Strategies

Learn about CVE-2021-35619 impacting Oracle Database Server versions 12.1.0.2, 12.2.0.1, 19c, and 21c. Discover the risks, impact, and mitigation steps for this vulnerability.

A vulnerability has been identified in the Java VM component of Oracle Database Server, affecting versions 12.1.0.2, 12.2.0.1, 19c, and 21c. This vulnerability could allow a low privileged attacker with specific privileges to compromise the Java VM, potentially resulting in a full takeover.

Understanding CVE-2021-35619

This section provides insights into the nature and impact of the CVE-2021-35619 vulnerability.

What is CVE-2021-35619?

The vulnerability in the Java VM component of Oracle Database Server impacts versions 12.1.0.2, 12.2.0.1, 19c, and 21c. It allows a low privileged attacker with specific network access via Oracle Net to compromise Java VM. Successful exploitation requires human interaction and can lead to a complete takeover of Java VM.

The Impact of CVE-2021-35619

The vulnerability has a CVSS 3.1 Base Score of 7.1, with high impacts on Confidentiality, Integrity, and Availability. The attack complexity is rated as high, requiring low privileges but network access.

Technical Details of CVE-2021-35619

This section delves into the technical aspects of the CVE-2021-35619 vulnerability.

Vulnerability Description

The vulnerability allows a low privileged attacker to exploit the Java VM component of Oracle Database Server, potentially leading to a complete compromise of Java VM.

Affected Systems and Versions

Versions 12.1.0.2, 12.2.0.1, 19c, and 21c of Oracle Database Server are affected by this vulnerability.

Exploitation Mechanism

Exploiting this vulnerability requires a low privileged attacker with Create Procedure privilege and network access via Oracle Net. Successful attacks need human interaction and can result in the full takeover of Java VM.

Mitigation and Prevention

In this section, learn about how to mitigate the risks associated with CVE-2021-35619.

Immediate Steps to Take

Organizations should restrict network access to vulnerable systems, apply patches as soon as they become available, and monitor for any suspicious activity.

Long-Term Security Practices

Implementing the principle of least privilege, regular security training for personnel, and keeping software up to date can help prevent such vulnerabilities.

Patching and Updates

Oracle Corporation has released patches to address the CVE-2021-35619 vulnerability. Organizations are advised to apply these patches promptly to mitigate the risk of exploitation.

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