Improper Certificate Validation Affecting libreoffice-help-el package, versions <1:6.4.7.2-11.el8.alma


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.14% (52nd percentile)

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  • Snyk IDSNYK-ALMALINUX8-LIBREOFFICEHELPEL-5625501
  • published28 May 2023
  • disclosed8 Nov 2022

Introduced: 8 Nov 2022

CVE-2021-25636  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 libreoffice-help-el to version 1:6.4.7.2-11.el8.alma or higher.
This issue was patched in ALSA-2022:7461.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libreoffice-help-el package and not the libreoffice-help-el package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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 contain both "X509Data" and "KeyValue" children of the "KeyInfo" tag, which when opened caused LibreOffice to verify using the "KeyValue" but to report verification with the unrelated "X509Data" value. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.5.

CVSS Scores

version 3.1