A MariaDB security update has been released for Ubuntu Linux 18.04 LTS and 20.04 LTS.

USN-4603-1: MariaDB vulnerabilities

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Ubuntu Security Notice USN-4603-1
October 27, 2020

mariadb-10.1, mariadb-10.3 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in MariaDB.

Software Description:
- mariadb-10.3: MariaDB database
- mariadb-10.1: MariaDB database

Details:

It was discovered that MariaDB didn't properly validate the content of a packet
received from a server. A remote attacker could use this vulnerability to sent
a specialy crafted file to cause a denial of service. (CVE-2020-13249)

It was discovered that MariaDB has other security issues. An attacker can cause
a hang or frequently repeatable crash (denial of service). (CVE-2020-15180,
CVE-2020-2752, CVE-2020-2760, CVE-2020-2812, CVE-2020-2814)

In addition to security fixes, the updated packages contain bug fixes, new
features, and possibly incompatible changes.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
mariadb-server 1:10.3.25-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
mariadb-server 1:10.1.47-0ubuntu0.18.04.1

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart MariaDB to
make all the necessary changes.

References:
  https://usn.ubuntu.com/4603-1
CVE-2020-13249, CVE-2020-15180, CVE-2020-2752, CVE-2020-2760,
CVE-2020-2812, CVE-2020-2814

Package Information:
  https://launchpad.net/ubuntu/+source/mariadb-10.3/1:10.3.25-0ubuntu0.20.04.1
  https://launchpad.net/ubuntu/+source/mariadb-10.1/1:10.1.47-0ubuntu0.18.04.1