CVE-2023-21949 : Exploit Details and Defense Strategies

This CVE record pertains to a vulnerability found in the Advanced Networking Option component of Oracle Database Server. The vulnerability allows an unauthenticated attacker with network access via Oracle Net to compromise the Advanced Networking Option, potentially leading to unauthorized data access.

Understanding CVE-2023-21949

This section will delve into what CVE-2023-21949 entails, its impact, technical details, and mitigation strategies.

What is CVE-2023-21949?

CVE-2023-21949 is a difficult to exploit vulnerability that permits an unauthenticated attacker with network access via Oracle Net to compromise the Advanced Networking Option. Successful exploitation of this vulnerability may result in unauthorized update, insert, or delete access to certain Advanced Networking Option data.

The Impact of CVE-2023-21949

The impact of CVE-2023-21949 lies in the fact that unauthorized individuals could potentially gain access to sensitive data within the Advanced Networking Option component of Oracle Database Server. This can lead to potential integrity issues within the affected systems.

Technical Details of CVE-2023-21949

In this section, we will explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism of CVE-2023-21949.

Vulnerability Description

The vulnerability in the Advanced Networking Option component of Oracle Database Server affects versions 19.3-19.19 and 21.3-21.10. It allows an unauthenticated attacker with network access via Oracle Net to compromise the Advanced Networking Option, leading to unauthorized data access.

Affected Systems and Versions

The following versions of the Advanced Networking Option within Oracle Database Server are affected:

Version 19.3 to 19.19
Version 21.3 to 21.10

Exploitation Mechanism

The vulnerability can be exploited by an unauthenticated attacker with network access via Oracle Net, enabling them to compromise the Advanced Networking Option and potentially gain unauthorized data access.

Mitigation and Prevention

This section focuses on the steps that can be taken to mitigate the risks associated with CVE-2023-21949 and prevent potential exploitation.

Immediate Steps to Take

It is crucial to apply security patches provided by Oracle promptly. Additionally, restricting network access and implementing strong authentication mechanisms can help reduce the risk of exploitation.

Long-Term Security Practices

Implementing regular security audits, staying informed about security updates, and conducting thorough security assessments can bolster long-term security practices.

Patching and Updates

Ensuring that systems are regularly updated with the latest patches and security updates from Oracle is essential to mitigate the vulnerability posed by CVE-2023-21949.