CVE-2019-2455 Denial of service in MySQL Server

Medium 6.5 Published 16 Jan 2019 Updated 2 Oct 2024

A low-privileged attacker can cause a complete denial of service in MySQL Server via the parser component.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-2455?

CVE-2019-2455 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 16 Jan 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Parser). Supported versions that are affected are 5.6.42 and prior, 5.7.24 and prior and 8.0.13 and prior. Easily exploitable vulnerability allows low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Which versions are affected by CVE-2019-2455?

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-2019-2455?

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-2019-2455 being exploited?

There is no known exploitation of CVE-2019-2455 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as GHSA-r88f-7f8h-mc36, UBUNTU-CVE-2019-2455.