CVE-2021-25635

Content Manipulation with Certificate Validation Attack

State: Published
Severity: 5.2 Medium
Published: Mar 21, 2025
Updated: Mar 21, 2025
Reserved: Jan 19, 2021

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	5.2 Medium	CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H	Document Fdn.

Weaknesses

CWE-295 Improper Certificate Validation

Affected Products

Product	Versions
LibreOfficeThe Document Foundation	7.0 to before 7.0.5Affected 7.1 to before 7.1.1Affected

References

https://www.libreoffice.org/about-us/security/advisories/cve-2021-25635/

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