CVE-2018-2647 Denial of service in MySQL Server

Medium 5.5 Published 18 Jan 2018 Updated 3 Oct 2024

High-privileged attackers can cause MySQL Server crashes and modify data via replication vulnerabilities, requiring immediate patching.

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

What is CVE-2018-2647?

CVE-2018-2647 is a medium-severity denial of service vulnerability in Oracle Mysql, published on 18 Jan 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: Replication). Supported versions that are affected are 5.6.38 and prior and 5.7.20 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 as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.0 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

Which versions are affected by CVE-2018-2647?

It affects 1 product.

Products include Oracle Mysql.

How do I fix CVE-2018-2647?

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-2018-2647 being exploited?

There is no known exploitation of CVE-2018-2647 in the wild and no public exploit code.

All Oracle Mysql vulnerabilities

Sources

Also known as GHSA-7hf2-47cv-phw8, UBUNTU-CVE-2018-2647.