CVE-2023-30442 : Vulnerability Insights and Analysis

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) version 11.1 and 11.5 is susceptible to a denial of service vulnerability. An attacker could exploit this vulnerability to crash the server by using a specially crafted wrapper with certain options. This CVE was published by IBM on July 10, 2023.

Understanding CVE-2023-30442

This section dives into the details of the CVE-2023-30442 vulnerability affecting IBM Db2 for Linux, UNIX, and Windows.

What is CVE-2023-30442?

The vulnerability in IBM Db2 versions 11.1 and 11.5 allows an attacker to trigger a denial of service condition by utilizing a specially crafted wrapper with specific options, leading to a server crash.

The Impact of CVE-2023-30442

The impact of this vulnerability is rated as medium severity with a CVSS base score of 5.9. The availability impact is high as the server may crash, affecting the normal operation of the federated server.

Technical Details of CVE-2023-30442

This section outlines the technical aspects of the CVE-2023-30442 vulnerability.

Vulnerability Description

The vulnerability is classified as CWE-20 - Improper Input Validation. Attackers can exploit this flaw in the federated server of IBM Db2 versions 11.1 and 11.5 to disrupt service availability.

Affected Systems and Versions

Product: Db2 for Linux, UNIX and Windows
Vendor: IBM
Versions: 11.1, 11.5

Exploitation Mechanism

The vulnerability can be exploited by utilizing a specially crafted wrapper with certain options, causing the server to crash and leading to a denial of service.

Mitigation and Prevention

To safeguard your system from the CVE-2023-30442 vulnerability, consider the following steps:

Immediate Steps to Take

Apply patches or updates provided by IBM to address the vulnerability promptly.

Long-Term Security Practices

Implement secure coding practices and input validation mechanisms to prevent similar vulnerabilities in the future.

Patching and Updates

Regularly check for security advisories and updates from IBM to stay protected against known vulnerabilities.