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Ubuntu Security Notice USN-7504-1
May 08, 2025

libreoffice vulnerability
==========================================================================

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

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

LibreOffice could accept fraudulent digital signatures.

Software Description:
- libreoffice: Office productivity suite

Details:

Juraj Šarinay discovered that LibreOffice incorrectly handled verifying
PDF signatures. A remote attacker could possibly use this issue to
generate PDF files that appear to have a valid signature.

Update instructions:

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

Ubuntu 24.10
  libreoffice                     4:24.8.6-0ubuntu0.24.10.2

Ubuntu 24.04 LTS
  libreoffice                     4:24.2.7-0ubuntu0.24.04.4

Ubuntu 22.04 LTS
  libreoffice                     1:7.3.7-0ubuntu0.22.04.10

Ubuntu 20.04 LTS
  libreoffice                     1:6.4.7-0ubuntu0.20.04.15

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

References:
  https://ubuntu.com/security/notices/USN-7504-1
  CVE-2025-2866

Package Information:
  https://launchpad.net/ubuntu/+source/libreoffice/4:24.8.6-0ubuntu0.24.10.2
  https://launchpad.net/ubuntu/+source/libreoffice/4:24.2.7-0ubuntu0.24.04.4
  https://launchpad.net/ubuntu/+source/libreoffice/1:7.3.7-0ubuntu0.22.04.10
  https://launchpad.net/ubuntu/+source/libreoffice/1:6.4.7-0ubuntu0.20.04.15