Your submission was sent successfully! Close

CVE-2021-25634

Published: 12 October 2021

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 modify a digitally signed ODF document to insert an additional signing time timestamp which LibreOffice would incorrectly present as a valid signature signed at the bogus signing time. This issue affects: The Document Foundation LibreOffice 7-0 versions prior to 7.0.6; 7-1 versions prior to 7.1.2.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
libreoffice
Launchpad, Ubuntu, Debian
Upstream
Released (7.0.6,7.1.2,1:7.2.0-2)
Ubuntu 21.10 (Impish Indri) Not vulnerable
(1:7.2.1-0ubuntu3)
Ubuntu 21.04 (Hirsute Hippo) Not vulnerable
(1:7.1.2~rc2-0ubuntu2)
Ubuntu 20.04 LTS (Focal Fossa)
Released (1:6.4.7-0ubuntu0.20.04.2)
Ubuntu 18.04 LTS (Bionic Beaver) Ignored

Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(code not present)
Ubuntu 14.04 ESM (Trusty Tahr) Ignored
(out of standard support)
Patches:
Upstream: https://github.com/LibreOffice/core/commit/ad5930e87e788780a255523f106deb1dde5d7b37 (bp)
Upstream: https://github.com/LibreOffice/core/commit/abe77c4fcb9ea97d9fff07eaea6d8863bcba5b02
Upstream: https://github.com/LibreOffice/core/commit/94ce59dd02fcfcaa1eb4f195b45a9a2edbd58242