CVE-2023-47746 Explained : Impact and Mitigation

IBM Db2 for Linux, UNIX and Windows versions 10.5, 11.1, and 11.5 is susceptible to a denial of service attack due to improper input validation. An authenticated user with CONNECT privileges could exploit this vulnerability, potentially leading to service disruption.

Understanding CVE-2023-47746

This section will provide insights into the nature and impact of the IBM Db2 denial of service vulnerability.

What is CVE-2023-47746?

The CVE-2023-47746, also known as 'IBM Db2 denial of service,' affects versions 10.5, 11.1, and 11.5 of IBM Db2 for Linux, UNIX, and Windows. It allows an authenticated user with CONNECT privileges to launch a denial of service attack using a specially crafted query.

The Impact of CVE-2023-47746

The vulnerability poses a medium severity threat with a CVSS base score of 5.3. The attack complexity is high, and an attacker can exploit it over the network to cause a high impact on availability. While confidentiality and integrity remain unaffected, the privilege required for exploitation is low.

Technical Details of CVE-2023-47746

In this section, we delve into the specifics of the vulnerability, including its description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises due to improper input validation in IBM Db2 for Linux, UNIX, and Windows versions 10.5, 11.1, and 11.5. An authenticated user with CONNECT privileges can utilize a specially crafted query to trigger a denial of service condition.

Affected Systems and Versions

IBM Db2 for Linux, UNIX, and Windows versions 10.5, 11.1, and 11.5 are affected by this vulnerability. Users of these versions should be cautious and implement necessary security measures.

Exploitation Mechanism

To exploit this vulnerability, an authenticated user with CONNECT privileges manipulates the system by executing a malicious query, resulting in a denial of service condition.

Mitigation and Prevention

This section outlines the steps to mitigate the risk posed by CVE-2023-47746 and prevent similar vulnerabilities in the future.

Immediate Steps to Take

Affected users should apply relevant security patches provided by IBM to address the vulnerability promptly. Additionally, restricting access and monitoring queries can help mitigate the risk.

Long-Term Security Practices

It is advisable to follow secure coding practices, conduct regular security assessments, and stay informed about security updates to prevent similar vulnerabilities in the long term.

Patching and Updates

Regularly check for security updates from IBM and apply patches as soon as they are released to ensure the security of IBM Db2 for Linux, UNIX, and Windows.