7.5
CVSSv3

CVE-2021-25633

Published: 11/10/2021 Updated: 18/10/2021
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Vulnerability Summary

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 malicious user 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 before 7.0.6; 7-1 versions before 7.1.2.

Vulnerability Trend

Vulnerable Product Search on Vulmon Subscribe to Product

libreoffice libreoffice

debian debian linux 11.0

Vendor Advisories

Synopsis Moderate: libreoffice security, bug fix, and enhancement update Type/Severity Security Advisory: Moderate Red Hat Insights patch analysis Identify and remediate systems affected by this advisory View affected systems Topic An update for libreoffice is now available for Red Hat Enterprise Linux 8Red Hat Product Security ha ...
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 For the stable distribution (bullseye), these problems have been fixed in version 1:704-4+deb11u1 We recommend that you upgrade your libreoffice packages For ...