CVE-2019-2503 Denial of service in MySQL Server

Medium 6.4 Published 16 Jan 2019 Updated 2 Oct 2024

A low-privileged attacker on the same network segment can cause a denial of service and access sensitive data in MySQL Server.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2019-2503?

CVE-2019-2503 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 16 Jan 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: Server: Connection Handling). Supported versions that are affected are 5.6.42 and prior, 5.7.24 and prior and 8.0.13 and prior. Difficult to exploit vulnerability allows low 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 access to critical data or complete access to all MySQL Server accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.0 Base Score 6.4 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H).

Which versions are affected by CVE-2019-2503?

It affects 13 products.

Products include Canonical Ubuntu Linux, Mariadb Mariadb, Netapp Active Iq Unified Manager, Netapp Oncommand Insight, Netapp Oncommand Workflow Automation, Netapp Snapcenter and 7 more.

How do I fix CVE-2019-2503?

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-2019-2503 being exploited?

There is no known exploitation of CVE-2019-2503 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as GHSA-px7j-2qhq-c538, UBUNTU-CVE-2019-2503.