CVE-2021-2051 Explained : Impact and Mitigation

This CVE-2021-2051 article provides an overview of a vulnerability in the Oracle BI Publisher product of Oracle Fusion Middleware, impacting versions 5.5.0.0.0, 11.1.1.9.0, 12.2.1.3.0, and 12.2.1.4.0. The vulnerability allows a low privileged attacker to compromise Oracle BI Publisher via HTTP, potentially leading to unauthorized data access, data manipulation, and partial denial of service.

Understanding CVE-2021-2051

CVE-2021-2051 details a security flaw in Oracle BI Publisher, affecting multiple versions and posing risks to data confidentiality, integrity, and availability.

What is CVE-2021-2051?

CVE-2021-2051 involves an easily exploitable vulnerability in Oracle BI Publisher that enables attackers with network access via HTTP to compromise the system. Successful exploitation could result in unauthorized access to critical data, data manipulation, and partial denial of service.

The Impact of CVE-2021-2051

The impact of CVE-2021-2051 includes unauthorized access to critical data, potential data manipulation, and the ability to cause partial denial of service within Oracle BI Publisher. The CVSS 3.1 Base Score for this vulnerability is 7.6, indicating a high severity level.

Technical Details of CVE-2021-2051

This section explores the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability in Oracle BI Publisher allows low privileged attackers to compromise the system via HTTP, potentially leading to unauthorized data access and partial denial of service.

Affected Systems and Versions

Oracle BI Publisher versions 5.5.0.0.0, 11.1.1.9.0, 12.2.1.3.0, and 12.2.1.4.0 are affected by CVE-2021-2051, exposing them to security risks.

Exploitation Mechanism

Attackers with network access via HTTP can exploit this vulnerability to compromise the Oracle BI Publisher system, gaining unauthorized data access and manipulation capabilities.

Mitigation and Prevention

In this section, you'll find essential steps to address and prevent the CVE-2021-2051 vulnerability.

Immediate Steps to Take

Organizations should apply security patches provided by Oracle to mitigate the vulnerability. Additionally, network segregation and access control can help reduce the risk of exploitation.

Long-Term Security Practices

Regular security assessments, employee training on secure practices, and continuous monitoring of network activity are essential for long-term security.

Patching and Updates

Remaining up-to-date with security patches and software updates from Oracle is crucial to prevent potential exploitation of the CVE-2021-2051 vulnerability.