CVE-2021-25636
libreoffice - security update
描述
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.
如何修補 CVE-2021-25636
要修補 CVE-2021-25636,請將受影響套件升級到下列已修補版本。
- —升級至 1:7.0.4-4+deb11u2 或更新版本
- —升級至 1:6.1.5-3+deb10u8 或更新版本
CVE-2021-25636 正在被利用嗎?
低 — EPSS 為 1.0%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 1:7.0.4-4+deb11u2
- from 0, < 1:6.1.5-3+deb10u8
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |