Executive Summary

Name CVE-2021-25636 First vendor Publication 2022-02-24
Vendor Cve Last vendor Modification 2023-03-27

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact High Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:P/A:N)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25636

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-295 Certificate Issues

CPE : Common Platform Enumeration

Application 422
Os 1

Sources (Detail)

Source Url
MISC https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
MLIST https://lists.debian.org/debian-lts-announce/2023/03/msg00022.html

Alert History

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Date Informations
2023-03-27 09:27:29
  • Multiple Updates
2023-03-27 05:27:28
  • Multiple Updates
2022-06-03 21:27:17
  • Multiple Updates
2022-03-04 00:22:56
  • Multiple Updates
2022-03-03 17:22:59
  • Multiple Updates
2022-02-24 21:22:54
  • First insertion