A LibreOffice security update has been released for Ubuntu Linux 20.04 LTS.

==========================================================================
Ubuntu Security Notice USN-5661-1
October 06, 2022

libreoffice vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in LibreOffice.

Software Description:
- libreoffice: Office productivity suite

Details:

It was discovered that LibreOffice incorrectly validated macro signatures.
If a user were tricked into opening a specially crafted document, a remote
attacker could possibly use this issue to execute arbitrary macros.
(CVE-2022-26305)

It was discovered that Libreoffice incorrectly handled encrypting the
master key provided by the user for storing passwords for web connections.
A local attacker could possibly use this issue to obtain access to
passwords stored in the user's configuration data. (CVE-2022-26306,
CVE-2022-26307)

Update instructions:

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

Ubuntu 20.04 LTS:
libreoffice 1:6.4.7-0ubuntu0.20.04.5

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-5661-1
CVE-2022-26305, CVE-2022-26306, CVE-2022-26307

Package Information:
  https://launchpad.net/ubuntu/+source/libreoffice/1:6.4.7-0ubuntu0.20.04.5