CVE-2021-25636 — Improper Verification of Cryptographic Signature in Document Foundation Libreoffice
Severity
7.5HIGHNVD
EPSS
0.2%
top 60.85%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 24
Latest updateMar 15
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…
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NExploitability: 3.9 | Impact: 3.6
Affected Packages3 packages
Also affects: Fedora 34
🔴Vulnerability Details
3GHSA▶
GHSA-3cgr-wxhv-h7xw: LibreOffice supports digital signatures of ODF documents and macros within documents, presenting visual aids that no alteration of the document occurr↗2022-02-25
OSV▶
CVE-2021-25636: LibreOffice supports digital signatures of ODF documents and macros within documents, presenting visual aids that no alteration of the document occurr↗2022-02-24