Directory Traversal Affecting libreoffice-help-en package, versions <1:6.0.6.1-20.0.1.el8


Severity

Recommended
medium

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.21% (60th percentile)

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  • Snyk ID SNYK-ORACLE8-LIBREOFFICEHELPEN-2555863
  • published 10 Apr 2022
  • disclosed 6 Sep 2019

How to fix?

Upgrade Oracle:8 libreoffice-help-en to version 1:6.0.6.1-20.0.1.el8 or higher.
This issue was patched in ELSA-2020-1598.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libreoffice-help-en package and not the libreoffice-help-en package as distributed by Oracle. See How to fix? for Oracle:8 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-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.

CVSS Scores

version 3.1
Expand this section

NVD

7.8 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High