- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 202212-04
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                           https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

 Severity: High
    Title: LibreOffice: Arbitrary Code Execution
     Date: December 19, 2022
     Bugs: #876869
       ID: 202212-04

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
=======
A vulnerability has been discovered in LibreOffice which could result in
arbitrary script execution via crafted links.

Background
=========
LibreOffice is a powerful office suite; its clean interface and powerful
tools let you unleash your creativity and grow your productivity.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-office/libreoffice     < 7.3.6.2                  >= 7.3.6.2
  2  app-office/libreoffice-bin < 7.3.6.2                  >= 7.3.6.2

Description
==========
LibreOffice links using the vnd.libreoffice.command scheme could be
constructed to call internal macros with arbitrary arguments. Which when
clicked on, or activated by document events, could result in arbitrary
script execution without warning.

Impact
=====
An attacker able to coerce a victim into opening a crafted LibreOffice
document and execute certain actions with it could achieve remote code
execution.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All LibreOffice users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-office/libreoffice-7.3.6.2"

All LibreOffice binary users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-office/libreoffice-bin-7.3.6.2"

References
=========
[ 1 ] CVE-2022-3140
      https://nvd.nist.gov/vuln/detail/CVE-2022-3140

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202212-04

Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
======
Copyright 2022 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5/