CVE-2022-21511 Explained : Impact and Mitigation

This article provides an overview of CVE-2022-21511, a vulnerability in the Oracle Database - Enterprise Edition Recovery component that could lead to a complete takeover of the system.

Understanding CVE-2022-21511

CVE-2022-21511 is a vulnerability in the Oracle Database - Enterprise Edition Recovery component of Oracle Database Server, with a CVSS 3.1 Base Score of 7.2. The vulnerability can be exploited by a high privileged attacker with specific privileges, potentially resulting in a complete takeover of the Oracle Database - Enterprise Edition Recovery.

What is CVE-2022-21511?

The vulnerability in the Oracle Database - Enterprise Edition Recovery component allows an attacker with the EXECUTE ON DBMS_IR.EXECUTESQLSCRIPT privilege and network access via Oracle Net to compromise the system. Successful exploitation can lead to the complete takeover of the Oracle Database - Enterprise Edition Recovery.

The Impact of CVE-2022-21511

A successful attack exploiting CVE-2022-21511 can result in the compromise and takeover of the Oracle Database - Enterprise Edition Recovery. The confidentiality, integrity, and availability of the system are at risk, with a CVSS 3.1 Base Score of 7.2.

Technical Details of CVE-2022-21511

The vulnerability is rated with a CVSS 3.1 Base Score of 7.2, indicating a high severity level. The attack complexity is low, and the impact on confidentiality, integrity, and availability is high. The privileges required for exploitation are also high, with network access being the attack vector.

Vulnerability Description

The vulnerability allows a high privileged attacker to compromise the Oracle Database - Enterprise Edition Recovery using specific privileges and network access via Oracle Net.

Affected Systems and Versions

The Oracle Database - Enterprise Edition Recovery component is affected by this vulnerability. However, none of the supported versions are impacted.

Exploitation Mechanism

An attacker with the EXECUTE ON DBMS_IR.EXECUTESQLSCRIPT privilege and network access via Oracle Net can exploit this vulnerability to compromise the Oracle Database - Enterprise Edition Recovery.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-21511, immediate steps should be taken to secure the Oracle Database - Enterprise Edition Recovery.

Immediate Steps to Take

Ensure that all necessary security patches and updates are applied to the system. Review and adjust privileges to limit access and prevent unauthorized execution of SQL scripts.

Long-Term Security Practices

Implement a robust security policy, conduct regular security assessments, and monitor network traffic for any suspicious activities. Train personnel on best security practices and keep systems up to date with the latest patches.

Patching and Updates

Stay informed about security bulletins and updates from Oracle Corporation. Apply patches promptly to address any known vulnerabilities and enhance the security posture of the system.