CVE-2023-40373 : Security Advisory and Response

A denial of service vulnerability has been identified in IBM Db2 for Linux, UNIX and Windows. This CVE poses a medium severity risk with a CVSS base score of 5.3.

Understanding CVE-2023-40373

This section delves into the details of the CVE-2023-40373 vulnerability affecting IBM Db2.

What is CVE-2023-40373?

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) is susceptible to denial of service when exposed to a specially crafted query containing common table expressions.

The Impact of CVE-2023-40373

The vulnerability could be exploited by an attacker to cause a denial of service, potentially disrupting critical database operations.

Technical Details of CVE-2023-40373

Explore the technical aspects of the CVE-2023-40373 vulnerability in this section.

Vulnerability Description

The issue arises due to improper input validation (CWE-20) within IBM Db2, leading to the potential for a denial of service attack.

Affected Systems and Versions

IBM Db2 versions 10.5, 11.1, and 11.5 for Linux, UNIX, and Windows are impacted by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited remotely, requiring a low level of privileges and no user interaction, with a high impact on availability.

Mitigation and Prevention

Discover the steps to mitigate and prevent the exploitation of CVE-2023-40373 in this section.

Immediate Steps to Take

IBM recommends applying the necessary security updates provided to address this vulnerability promptly.

Long-Term Security Practices

Incorporate rigorous input validation mechanisms and regularly update your IBM Db2 instances to prevent potential denial of service attacks.

Patching and Updates

Stay informed about security advisories and patch releases from IBM to protect your systems against known vulnerabilities.