USN-5191-1: Flatpak vulnerability

Publication date

14 December 2021

Overview

A system hardening measure could be bypassed.


Packages

  • flatpak - Application deployment framework for desktop apps

Details

It was discovered that Flatpak incorrectly handled certain AF_UNIX sockets.
An attacker could use this to specially craft a Flatpak application that
could escape sandbox confinement.

It was discovered that Flatpak incorrectly handled certain AF_UNIX sockets.
An attacker could use this to specially craft a Flatpak application that
could escape sandbox confinement.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
21.10 impish libflatpak0 –  1.10.2-3ubuntu0.1
flatpak –  1.10.2-3ubuntu0.1
21.04 hirsute libflatpak0 –  1.10.2-1ubuntu1.1
flatpak –  1.10.2-1ubuntu1.1
20.04 focal libflatpak0 –  1.6.5-0ubuntu0.4
flatpak –  1.6.5-0ubuntu0.4
18.04 bionic libflatpak0 –  1.0.9-0ubuntu0.4
flatpak –  1.0.9-0ubuntu0.4

Reduce your security exposure

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Have additional questions?

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