A GNOME Autoar regression has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, and 20.10.

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Ubuntu Security Notice USN-4733-2
March 08, 2021

gnome-autoar regression
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

USN-4733-1 introduced a regression in GNOME Autoar.

Software Description:
- gnome-autoar: Archive integration support for GNOME

Details:

USN-4733-1 fixed a vulnerability in GNOME Autoar. The upstream fix
introduced a regression when extracting archives containing directories.
This update fixes the problem.

Original advisory details:

Yiğit Can Yılmaz discovered that GNOME Autoar could extract files outside
of the intended directory. If a user were tricked into extracting a
specially crafted archive, a remote attacker could create files in
arbitrary locations, possibly leading to code execution.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.10:
libgnome-autoar-0-0 0.2.4-2ubuntu0.2
libgnome-autoar-gtk-0-0 0.2.4-2ubuntu0.2

Ubuntu 20.04 LTS:
libgnome-autoar-0-0 0.2.3-2ubuntu0.2
libgnome-autoar-gtk-0-0 0.2.3-2ubuntu0.2

Ubuntu 18.04 LTS:
libgnome-autoar-0-0 0.2.3-1ubuntu0.2
libgnome-autoar-gtk-0-0 0.2.3-1ubuntu0.2

After a standard system update you need to restart your session to make
all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-4733-2
  https://ubuntu.com/security/notices/USN-4733-1
  https://launchpad.net/bugs/1917812

Package Information:
  https://launchpad.net/ubuntu/+source/gnome-autoar/0.2.4-2ubuntu0.2
  https://launchpad.net/ubuntu/+source/gnome-autoar/0.2.3-2ubuntu0.2
  https://launchpad.net/ubuntu/+source/gnome-autoar/0.2.3-1ubuntu0.2