Critical Denial of Service Vulnerability in MariaDB - CVE-2018-2562

mariadb Updated 02 Oct 2025

Summary

18/01/2018

Disclosed on

N/A

Severity

Yes i

Fix available

High

Severity

7.1

CVSS Score

ALPINE-CVE-2018-2562: Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server : Partition). Affects mariadb versions < 10.1.32-r0. Fixed in 10.1.32-r0. How to fix ↓

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Background

MariaDB is an open-source relational database management system that is widely used for web applications and data storage. It is a fork of MySQL and offers enhanced performance, security, and features. However, certain versions of MariaDB are vulnerable to a critical issue that can lead to denial of service and unauthorized data manipulation.

Vulnerability Detail

CVE-2018-2562 is a vulnerability in the MySQL Server component of Oracle MySQL, affecting MariaDB versions prior to 10.1.32-r0. This vulnerability allows low-privileged attackers with network access to exploit the MySQL Server, potentially causing it to hang or crash, leading to a complete denial of service. Additionally, it may allow unauthorized updates, inserts, or deletions of accessible data. The CVSS score for this vulnerability is 7.1, indicating a high severity level with significant integrity and availability impacts.

How To Fix

Minimum fixed version

10.1.32-r0

This is the first release that contains the fix.

sudo apk add --upgrade mariadb

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Workaround

As a temporary workaround, consider restricting network access to the MariaDB server to trusted IP addresses only. This can help mitigate the risk of exploitation until the package is updated.

Conclusion

CVE-2018-2562 is a critical vulnerability affecting MariaDB that can lead to denial of service and unauthorized data manipulation. It is essential to update to the patched version to mitigate risks. Additionally, using tools like Vulert can help in monitoring vulnerabilities effectively.

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