CVE-2021-2344 : Exploit Details and Defense Strategies

A vulnerability in the Oracle Coherence product of Oracle Fusion Middleware has been identified, allowing unauthorized attackers to compromise Oracle Coherence. Here is what you need to know about CVE-2021-2344.

Understanding CVE-2021-2344

This section provides an overview of the CVE-2021-2344 vulnerability.

What is CVE-2021-2344?

The vulnerability affects Oracle Coherence versions 3.7.1.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0. It allows an unauthenticated attacker with network access via T3, IIOP to compromise Oracle Coherence, potentially leading to a complete denial of service (DOS) attack.

The Impact of CVE-2021-2344

Successful exploitation of this vulnerability can result in unauthorized access, causing Oracle Coherence to hang or crash repeatedly, impacting the availability of the service. The CVSS 3.1 Base Score is 7.5, indicating a high impact on availability.

Technical Details of CVE-2021-2344

This section delves into the technical aspects of CVE-2021-2344.

Vulnerability Description

The vulnerability in Oracle Coherence allows attackers to compromise the application, leading to a potential denial of service attack.

Affected Systems and Versions

The following versions of Oracle Coherence are affected: 3.7.1.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0.

Exploitation Mechanism

Attackers can exploit this vulnerability through network access via T3, IIOP, without requiring authentication.

Mitigation and Prevention

This section outlines the steps to mitigate and prevent the CVE-2021-2344 vulnerability.

Immediate Steps to Take

It is recommended to apply patches or updates provided by Oracle to address this vulnerability. Additionally, restrict network access to minimize the risk of exploitation.

Long-Term Security Practices

Implementing stringent access controls, network segmentation, and regular security updates can help prevent similar vulnerabilities in the future.

Patching and Updates

Ensure that you regularly apply security patches and updates released by Oracle to protect against known vulnerabilities.