An ark security update has been released for Arch Linux to address arbitrary filesystem access.

ASA-202009-2: ark: arbitrary filesystem access

Arch Linux Security Advisory ASA-202009-2
========================================
Severity: High
Date : 2020-09-03
CVE-ID : CVE-2020-24654
Package : ark
Type : arbitrary filesystem access
Remote : No
Link :   https://security.archlinux.org/AVG-1216

Summary
======
The package ark before version 20.08.0-2 is vulnerable to arbitrary
filesystem access.

Resolution
=========
Upgrade to 20.08.0-2.

# pacman -Syu "ark> .08.0-2"

The problem has been fixed upstream but no release is available yet.

Workaround
=========
None.

Description
==========
In KDE Ark before 20.08.1, a crafted TAR archive with symlinks can
install files outside the extraction directory, as demonstrated by a
write operation to a user's home directory.

Impact
=====
An attacker can overwrite local files by tricking a legitimate user
into extracting a specially crafted TAR archive.

References
=========
  https://kde.org/info/security/advisory-20200827-1.txt
  https://invent.kde.org/utilities/ark/-/commit/8bf8c5ef07b0ac5e914d752681e470dea403a5bd
  https://security.archlinux.org/CVE-2020-24654