CVE-2019-9854
libreoffice - security update
描述
LibreOffice has a feature where documents can specify that pre-installed macros can be executed on various script events such as mouse-over, document-open etc. Access is intended to be restricted to scripts under the share/Scripts/python, user/Scripts/python sub-directories of the LibreOffice install. Protection was added, to address CVE-2019-9852, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed by employing a URL encoding attack to defeat the path verification step. However this protection could be bypassed by taking advantage of a flaw in how LibreOffice assembled the final script URL location directly from components of the passed in path as opposed to solely from the sanitized output of the path verification step. This issue affects: Document Foundation LibreOffice 6.2 versions prior to 6.2.7; 6.3 versions prior to 6.3.1.
如何修補 CVE-2019-9854
要修補 CVE-2019-9854,請將受影響套件升級到下列已修補版本。
- —升級至 1:6.3.1~rc2-1 或更新版本
- —升級至 1:5.2.7-1+deb9u11 或更新版本
CVE-2019-9854 正在被利用嗎?
低 — EPSS 為 1.9%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 1:6.3.1~rc2-1
- from 0, < 1:5.2.7-1+deb9u11
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |