Gentoo: GLSA-202101-06: Ark: Symlink vulnerability

Ark was found to allow arbitrary file overwrite, possibly allowing arbitrary code execution.

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Gentoo Linux Security Advisory                           GLSA 202101-06
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Ark: Symlink vulnerability
     Date: January 11, 2021
     Bugs: #743959
       ID: 202101-06

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Synopsis
========

Ark was found to allow arbitrary file overwrite, possibly allowing
arbitrary code execution.

Background
==========

Ark is a graphical file compression/decompression utility with support
for multiple formats.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  kde-apps/ark               < 20.04.3-r2            >= 20.04.3-r2

Description
===========

KDE Ark did not fully verify symlinks contained within tar archives.

Impact
======

A remote attacker could entice a user to open a specially crafted tar
archive using KDE Ark, possibly resulting in execution of arbitrary
code with the privileges of the process or a Denial of Service
condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All KDE Ark users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=kde-apps/ark-20.04.3-r2"

References
==========

[ 1 ] CVE-2020-24654
      https://nvd.nist.gov/vuln/detail/CVE-2020-24654

Availability
============

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

 https://security.gentoo.org/glsa/202101-06

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
This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2021 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