CVE-2023-25930 : What You Need to Know

This CVE record pertains to a vulnerability in IBM Db2 for Linux, UNIX and Windows that could lead to a denial of service under specific conditions.

Understanding CVE-2023-25930

This section delves into the details of the CVE-2023-25930 vulnerability affecting IBM Db2 for Linux, UNIX, and Windows.

What is CVE-2023-25930?

The vulnerability identified as CVE-2023-25930 impacts IBM Db2 for Linux, UNIX, and Windows, including Db2 Connect Server versions 10.1, 11.1, and 11.5. It poses a risk of a denial of service when a special register is set, potentially causing the Db2 server to terminate unexpectedly.

The Impact of CVE-2023-25930

With a CVSS v3.1 base score of 5.9 (Medium Severity), the vulnerability's attack complexity is rated as HIGH, with a NETWORK attack vector and HIGH availability impact. While it does not affect confidentiality or integrity, it can lead to service disruption.

Technical Details of CVE-2023-25930

This section provides in-depth technical insights into the CVE-2023-25930 vulnerability.

Vulnerability Description

The vulnerability stems from improper input validation (CWE-20), where setting a special register can trigger abnormal termination of the Db2 server, resulting in a denial of service under rare conditions.

Affected Systems and Versions

IBM Db2 for Linux, UNIX, and Windows versions 10.1, 11.1, and 11.5 are affected by this vulnerability, potentially exposing systems running these versions to the risk of a denial of service.

Exploitation Mechanism

The vulnerability can be exploited under specific conditions by setting a certain register, leading to the abnormal termination of the Db2 server and causing a denial of service.

Mitigation and Prevention

To address CVE-2023-25930 and mitigate the associated risks, organizations and users can take several steps to enhance the security of their Db2 installations.

Immediate Steps to Take

Implement patches or updates provided by IBM to address the vulnerability promptly.
Monitor system logs and behavior for any signs of exploitation or abnormal server terminations.
Consider restricting access to vulnerable Db2 instances and limiting interactions that could trigger the denial of service.

Long-Term Security Practices

Regularly update and patch IBM Db2 installations to address any new vulnerabilities promptly.
Conduct security assessments and penetration testing to identify and remediate weaknesses in Db2 configurations.
Educate personnel on secure practices for managing and maintaining Db2 instances to prevent exploitation of known vulnerabilities.

Patching and Updates

Ensure that IBM Db2 for Linux, UNIX, and Windows versions 10.1, 11.1, and 11.5 are updated with the latest security patches provided by IBM to mitigate the CVE-2023-25930 vulnerability and enhance system security.