CVEvulnerability

CVE-2021-25636

7.5 HIGH Published 2022-02-24 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-02-24
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:N
Weaknesses
CWE-295, CWE-347

Description

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.

Affected configurations

• libreoffice libreoffice (>= 7.2.0 < 7.2.5) • fedoraproject fedora 34

Related

Weakness · CWE (2)

  • CWE-295 Improper Certificate Validation weakness
  • CWE-347 Improper Verification of Cryptographic Signature weakness

References