CVE-2021-35551 Explained : Impact and Mitigation

This CVE-2021-35551 article provides detailed information about a vulnerability in the RDBMS Security component of Oracle Database Server affecting versions 12.2.0.1, 19c, and 21c.

Understanding CVE-2021-35551

CVE-2021-35551 is a vulnerability in the RDBMS Security component of Oracle Database Server that allows a high privileged attacker with DBA privilege via Oracle Net to compromise RDBMS Security.

What is CVE-2021-35551?

The vulnerability in CVE-2021-35551 affects Oracle Database Server versions 12.2.0.1, 19c, and 21c, enabling unauthorized access and potential DOS attacks, resulting in integrity and availability impacts with a CVSS base score of 5.5.

The Impact of CVE-2021-35551

Successful exploitation of CVE-2021-35551 can lead to unauthorized access to RDBMS Security data and potential system crashes, exposing sensitive information.

Technical Details of CVE-2021-35551

This section provides technical details about the vulnerability, including its description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability allows a high privileged attacker to compromise RDBMS Security, potentially causing system crashes and unauthorized data access.

Affected Systems and Versions

Oracle Database Server versions 12.2.0.1, 19c, and 21c are affected by CVE-2021-35551, exposing them to unauthorized access and potential DOS attacks.

Exploitation Mechanism

An attacker with DBA privilege and network access via Oracle Net can exploit this vulnerability to compromise RDBMS Security and gain unauthorized access to sensitive data.

Mitigation and Prevention

In this section, we cover the immediate steps to take, long-term security practices, and patching recommendations to mitigate the risks posed by CVE-2021-35551.

Immediate Steps to Take

It is essential to apply security patches provided by Oracle promptly to address the vulnerability and prevent potential exploitation by malicious actors.

Long-Term Security Practices

Regularly updating and securing the Oracle Database Server, monitoring network access, and enforcing least privilege access can help enhance the overall security posture.

Patching and Updates

Oracle Corporation releases security patches and updates regularly. Stay informed about security alerts and apply the necessary patches to prevent exploitation of known vulnerabilities.