FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

ark -- directory traversal

Affected packages
ark < 20.04.2_1
ark = 20.04.3


VuXML ID d1ef1138-d273-11ea-a757-e0d55e2a8bf9
Discovery 2020-07-30
Entry 2020-07-30

KDE Project Security Advisory reports:

KDE Project Security Advisory
Title: Ark: maliciously crafted archive can install files outside the extraction directory.
Risk Rating: Important
CVE: CVE-2020-16116
Versions: ark <= 20.04.3
Author: Elvis Angelaccio <>
Date: 30 July 2020

A maliciously crafted archive with "../" in the file paths would install files anywhere in the user's home directory upon extraction.

Proof of concept

For testing, an example of malicious archive can be found at


Users can unwillingly install files like a modified .bashrc, or a malicious script placed in ~/.config/autostart


Users should not use the 'Extract' context menu from the Dolphin file manager. Before extracting a downloaded archive using the Ark GUI, users should inspect it to make sure it doesn't contain entries with "../" in the file path.


Ark 20.08.0 prevents loading of malicious archives and shows a warning message to the users.

Alternatively, can be applied to previous releases.


Thanks to Dominik Penner for finding and reporting this issue and thanks to Elvis Angelaccio and Albert Astals Cid for fixing it.


CVE Name CVE-2020-16116