=========================================================================Ubuntu Security Notice USN-6144-1
June 07, 2023

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in LibreOffice.

Software Description:
- libreoffice: Office productivity suite

Details:

It was discovered that LibreOffice did not properly validate the number of
parameters passed to the formula interpreter, leading to an array index
underflow attack. If a user were tricked into opening a specially crafted
spreadsheet file, an attacker could possibly use this issue to execute
arbitrary code. (CVE-2023-0950)

Amel Bouziane-Leblond discovered that LibreOffice did not prompt the user
before loading the host document inside an IFrame. If a user were tricked
into opening a specially crafted input file, an attacker could possibly use
this issue to cause information disclosure or execute arbitrary code.
(CVE-2023-2255)

Update instructions:

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

Ubuntu 22.04 LTS:
  libreoffice                     1:7.3.7-0ubuntu0.22.04.3

Ubuntu 20.04 LTS:
  libreoffice                     1:6.4.7-0ubuntu0.20.04.8

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

References:
  https://ubuntu.com/security/notices/USN-6144-1
  CVE-2023-0950, CVE-2023-2255

Package Information:
  https://launchpad.net/ubuntu/+source/libreoffice/1:7.3.7-0ubuntu0.22.04.3
  https://launchpad.net/ubuntu/+source/libreoffice/1:6.4.7-0ubuntu0.20.04.8