CVE-2019-2778 Missing authorization in MySQL Server

Medium 5.4 Published 23 Jul 2019 Updated 1 Oct 2024

Low-privileged attackers can modify data and cause partial denial of service in MySQL Server due to insufficient privilege checks.

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-2019-2778?

CVE-2019-2778 is a medium-severity missing authorization vulnerability in Canonical Ubuntu Linux, published on 23 Jul 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: Security: Privileges). Supported versions that are affected are 5.7.26 and prior and 8.0.16 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 update, insert or delete access to some of MySQL Server accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Server. CVSS 3.0 Base Score 5.4 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L).

Which versions are affected by CVE-2019-2778?

It affects 8 products.

Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Oracle Mysql, Redhat Enterprise Linux, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server Aus and 2 more.

How do I fix CVE-2019-2778?

Upgrade to a fixed version.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2019-2778 being exploited?

There is no known exploitation of CVE-2019-2778 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as GHSA-fff3-jjm2-qjf5, UBUNTU-CVE-2019-2778.