Directory Traversal Affecting libreoffice package, versions <1:5.1.6~rc2-0ubuntu1~xenial9


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.93% (78th percentile)

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  • Snyk IDSNYK-UBUNTU1604-LIBREOFFICE-459800
  • published15 Aug 2019
  • disclosed15 Aug 2019

Introduced: 15 Aug 2019

CVE-2019-9852  (opens in a new tab)
CWE-22  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 libreoffice to version 1:5.1.6rc2-0ubuntu1xenial9 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libreoffice package and not the libreoffice package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

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-2018-16858, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed. However this new protection could be bypassed by a URL encoding attack. In the fixed versions, the parsed url describing the script location is correctly encoded before further processing. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.

CVSS Base Scores

version 3.1