CVE-2022-27378 : Security Advisory and Response

An issue in the component Create_tmp_table::finalize of MariaDB Server v10.7 and below allows attackers to cause a Denial of Service (DoS) via specially crafted SQL statements.

Understanding CVE-2022-27378

This CVE describes a vulnerability in MariaDB Server that can be exploited by attackers to trigger a Denial of Service (DoS) attack.

What is CVE-2022-27378?

The CVE-2022-27378 vulnerability involves the component Create_tmp_table::finalize in MariaDB Server v10.7 and earlier versions. Attackers can exploit this issue by using specially crafted SQL statements to launch a Denial of Service attack.

The Impact of CVE-2022-27378

The impact of CVE-2022-27378 is the ability for malicious actors to disrupt the availability of MariaDB Server instances, leading to potential service downtime and operational disruptions.

Technical Details of CVE-2022-27378

This section details the technical aspects of the CVE, including the Vulnerability Description, Affected Systems and Versions, and Exploitation Mechanism.

Vulnerability Description

The vulnerability lies in the Create_tmp_table::finalize component of MariaDB Server v10.7 and below, enabling attackers to execute DoS attacks through manipulated SQL queries.

Affected Systems and Versions

MariaDB Server versions 10.7 and earlier are vulnerable to CVE-2022-27378, potentially impacting systems running these versions.

Exploitation Mechanism

By crafting specific SQL statements, threat actors can exploit the vulnerability in Create_tmp_table::finalize to trigger a DoS attack on affected MariaDB Server instances.

Mitigation and Prevention

To protect systems from CVE-2022-27378, immediate action should be taken to prevent exploitation and ensure long-term security measures are in place.

Immediate Steps to Take

Update MariaDB Server to a secure version that addresses CVE-2022-27378.
Implement network controls to restrict unauthorized access to MariaDB Server.

Long-Term Security Practices

Regularly monitor for security advisories and patches released by MariaDB to stay updated on vulnerability mitigation.
Conduct security assessments and audits to identify and remediate potential weaknesses in database security.

Patching and Updates

Apply patches provided by MariaDB for addressing CVE-2022-27378 to eliminate the vulnerability and enhance the security posture of MariaDB Server installations.