CVE-2018-3063 Denial of service in MySQL Server

Medium 4.9 Published 18 Jul 2018 Updated 2 Oct 2024

A high-privileged attacker can cause a complete denial of service in MySQL Server by triggering a hang or crash.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2018-3063?

CVE-2018-3063 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 18 Jul 2018. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Security: Privileges). Supported versions that are affected are 5.5.60 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.0 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Which versions are affected by CVE-2018-3063?

It affects 7 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Mariadb Mariadb, Netapp Oncommand Insight, Netapp Oncommand Workflow Automation, Netapp Snapcenter and 1 more.

How do I fix CVE-2018-3063?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-3063 being exploited?

There is no known exploitation of CVE-2018-3063 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2018-3063, GHSA-g8gr-2h7q-7749, UBUNTU-CVE-2018-3063.