CVE-2023-21893 : Security Advisory and Response

This CVE-2023-21893 information was published on January 17, 2023, assigned by Oracle, and updated on March 23, 2023.

Understanding CVE-2023-21893

This CVE pertains to a vulnerability found in the Oracle Data Provider for .NET, affecting versions 19c and 21c. It allows an unauthenticated attacker with network access via TCPS to compromise the Oracle Data Provider for .NET.

What is CVE-2023-21893?

The vulnerability in Oracle Data Provider for .NET can be exploited by an attacker with network access, leading to potential takeover of the component. Successful attacks require human interaction, involving a person other than the attacker.

The Impact of CVE-2023-21893

This vulnerability poses a threat to the confidentiality, integrity, and availability of the affected systems. The CVSS 3.1 Base Score is 7.5, indicating a high severity level.

Technical Details of CVE-2023-21893

This section covers specific technical details regarding the vulnerability.

Vulnerability Description

The vulnerability allows unauthenticated attackers with network access to compromise the Oracle Data Provider for .NET, potentially resulting in a complete takeover of the component.

Affected Systems and Versions

The Oracle Data Provider for .NET versions 19c and 21c are impacted by this vulnerability. Additionally, the Database client-only on the Windows platform is also affected.

Exploitation Mechanism

To exploit this vulnerability, an attacker needs network access via TCPS to interact with the Oracle Data Provider for .NET, requiring human interaction from a third party.

Mitigation and Prevention

To address this CVE and enhance security measures, follow the mitigation and prevention strategies outlined below.

Immediate Steps to Take

Implement strict access controls, restrict network access, and monitor for any suspicious activities related to the Oracle Data Provider for .NET. It is advisable to update to the patched versions for enhanced security.

Long-Term Security Practices

Regularly update and patch the Oracle Data Provider for .NET and associated systems, conduct security audits, and educate users on safe cyber practices to mitigate the risk of exploitation.

Patching and Updates

Stay informed about security advisories from Oracle, apply patches promptly, and maintain vigilance in monitoring and securing the Oracle Data Provider for .NET component. Regularly check for updates and security releases to stay protected against potential vulnerabilities.