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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
security@gentoo.org 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