Critical Denial of Service Vulnerability in MariaDB - CVE-2017-3258

mariadb Updated 02 Oct 2025

Summary

27/01/2017

Disclosed on

N/A

Severity

Yes i

Fix available

Medium

Severity

6.5

CVSS Score

ALPINE-CVE-2017-3258: Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: DDL). Affects mariadb versions < 10.1.21-r0. Fixed in 10.1.21-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 features, performance improvements, and a strong community support. The vulnerability CVE-2017-3258 affects multiple versions of MariaDB, allowing low-privileged attackers to exploit the system, leading to potential denial of service (DoS) attacks.

Vulnerability Detail

CVE-2017-3258 is a vulnerability in the MySQL Server component of Oracle MySQL, specifically in the Server: DDL subcomponent. Supported versions affected include 5.5.53 and earlier, 5.6.34 and earlier, and 5.7.16 and earlier. This vulnerability is easily exploitable, allowing attackers with network access to compromise the MySQL Server. Successful exploitation can lead to unauthorized ability to cause a hang or a frequently repeatable crash of the MySQL Server, resulting in a denial of service. The CVSS v3.0 Base Score for this vulnerability is 6.5, indicating significant availability impacts.

How To Fix

Minimum fixed version

10.1.21-r0

This is the first release that contains the fix.

sudo apk add --upgrade mariadb

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Workaround

As a temporary measure, you can restrict network access to the MariaDB server to trusted IP addresses only, minimizing the risk of exploitation until the package is updated.

Conclusion

CVE-2017-3258 presents a critical vulnerability in MariaDB that can lead to denial of service attacks. It is crucial to update to the patched version to safeguard your systems. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.

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