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CVE-2021-25633

Status Candidate

Overview

LibreOffice supports digital signatures of ODF documents and macros within documents, presenting visual aids that no alteration of the document occurred since the last signing and that the signature is valid. An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to create a digitally signed ODF document, by manipulating the documentsignatures.xml or macrosignatures.xml stream within the document to combine multiple certificate data, which when opened caused LibreOffice to display a validly signed indicator but whose content was unrelated to the signature shown. This issue affects: The Document Foundation LibreOffice 7-0 versions prior to 7.0.6; 7-1 versions prior to 7.1.2.

Related Files

Red Hat Security Advisory 2022-1766-01
Posted May 11, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-1766-01 - 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.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-25633, CVE-2021-25634, CVE-2021-25635
SHA-256 | 5b846c221d454c90b54c27181222908dd32fca2b480faa78ffd9087c0eef3083
Ubuntu Security Notice USN-5153-1
Posted Nov 22, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5153-1 - It was discovered that LibreOffice incorrectly handled digital signatures. An attacker could possibly use this issue to create a specially crafted document that would display a validly signed indicator, contrary to expectations.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2021-25633
SHA-256 | 4899ad083583da35f78641ddf24f1441522a1dbd81c50de87a4afb9ff9ab7161
Debian Security Advisory 4988-1
Posted Oct 28, 2021
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4988-1 - Two security issues have been discovered in LibreOffice's support for digital signatures in ODF documents, which could result in incorrect signature indicators/timestamps being presented.

tags | advisory
systems | linux, debian
advisories | CVE-2021-25633, CVE-2021-25634
SHA-256 | 7a2f69584a68e18f7b4e9fe262d01785022f6acbab6a103271def9bad9c2d7c4
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