CVE-2023-21874 Denial of service in MySQL Server

Low 2.7 Published 17 Jan 2023 Updated 17 Sep 2024

A high-privileged attacker can cause a partial denial of service in MySQL Server via the Thread Pooling component.

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

What is CVE-2023-21874?

CVE-2023-21874 is a low-severity denial of service vulnerability in Oracle Mysql Server, published on 17 Jan 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Thread Pooling). Supported versions that are affected are 8.0.30 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 partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.7 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L).

Which versions are affected by CVE-2023-21874?

It affects 1 product.

Products include Oracle Mysql Server.

How do I fix CVE-2023-21874?

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-2023-21874 being exploited?

There is no known exploitation of CVE-2023-21874 in the wild and no public exploit code.

All Oracle Mysql Server vulnerabilities

Sources

Also known as GHSA-286q-p8mv-qhjh, UBUNTU-CVE-2023-21874.