CVE-2019-2797 Denial of service in MySQL Server

Medium 4.2 Published 23 Jul 2019 Updated 1 Oct 2024

A high-privileged attacker with physical network access can cause a complete denial of service in MySQL Server.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2019-2797?

CVE-2019-2797 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 23 Jul 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Client programs). Supported versions that are affected are 5.7.26 and prior and 8.0.16 and prior. Difficult to exploit vulnerability allows high privileged attacker with access to the physical communication segment attached to the hardware where the MySQL Server executes 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 4.2 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).

Which versions are affected by CVE-2019-2797?

It affects 7 products.

Products include Canonical Ubuntu Linux, Oracle Mysql, Redhat Enterprise Linux, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Tus and 1 more.

How do I fix CVE-2019-2797?

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-2019-2797 being exploited?

There is no known exploitation of CVE-2019-2797 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as GHSA-m442-q7mg-f9r9, UBUNTU-CVE-2019-2797.