Affected: AlmaLinux:8: autocorr-af, AlmaLinux:8: autocorr-bg, AlmaLinux:8: autocorr-ca, AlmaLinux:8: autocorr-cs, AlmaLinux:8: autocorr-da, AlmaLinux:8: autocorr-de, AlmaLinux:8: autocorr-en, AlmaLinux:8: autocorr-es, AlmaLinux:8: autocorr-fa, AlmaLinux:8: autocorr-fi and 161 more

LibreOffice is an open source, community-developed office productivity suite. It includes key desktop applications, such as a word processor, a spreadsheet, a presentation manager, a formula editor, and a drawing program. LibreOffice replaces OpenOffice and provides a similar but enhanced and extended office suite.

Security Fix(es):

* libreoffice: Content Manipulation with Double Certificate Attack (CVE-2021-25633)

* libreoffice: Timestamp Manipulation with Signature Wrapping (CVE-2021-25634)

* libreoffice: Content Manipulation with Certificate Validation Attack (CVE-2021-25635)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to self sign an ODF document, with a signature untrusted by the target, then modify it to change the signature algorithm to an invalid (or unknown to LibreOffice) algorithm and LibreOffice would incorrectly present such a signature with an unknown algorithm as a valid signature issued by a trusted person

This issue affects LibreOffice: from 7.0 before 7.0.5, from 7.1 before 7.1.1.

An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to self sign an ODF document, with a signature untrusted by the target, then modify it to change the signature algorithm to an invalid (or unknown to LibreOffice) algorithm and LibreOffice would incorrectly present such a signature with an unknown algorithm as a valid signature issued by a trusted person

This issue affects LibreOffice: from 7.0 before 7.0.5, from 7.1 before 7.1.1.

libreoffice: Content Manipulation with Double Certificate Attack libreoffice: Timestamp Manipulation with Signature Wrapping libreoffice: Content Manipulation with Certificate Validation Attack

Withdrawn by the publisher.

Affected: Ubuntu:22.04:LTS: libreoffice

An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to self sign an ODF document, with a signature untrusted by the target, then modify it to change the signature algorithm to an invalid (or unknown to LibreOffice) algorithm and LibreOffice would incorrectly present such a signature with an unknown algorithm as a valid signature issued by a trusted person This issue affects LibreOffice: from 7.0 before 7.0.5, from 7.1 before 7.1.1.