baileyparker / firejail

Linux namespaces and seccomp-bpf sandbox

Firejail

Firejail is a SUID sandbox program that reduces the risk of security breaches by restricting the running environment of untrusted applications using Linux namespaces, seccomp-bpf and Linux capabilities. It allows a process and all its descendants to have their own private view of the globally shared kernel resources, such as the network stack, process table, mount table. Firejail can work in a SELinux or AppArmor environment, and it is integrated with Linux Control Groups.

Written in C with virtually no dependencies, the software runs on any Linux computer with a 3.x kernel version or newer. It can sandbox any type of processes: servers, graphical applications, and even user login sessions. The software includes sandbox profiles for a number of more common Linux programs, such as Mozilla Firefox, Chromium, VLC, Transmission etc.

The sandbox is lightweight, the overhead is low. There are no complicated configuration files to edit, no socket connections open, no daemons running in the background. All security features are implemented directly in Linux kernel and available on any Linux computer. To start the sandbox, prefix your command with “firejail”:

$ firejail firefox            # starting Mozilla Firefox
$ firejail transmission-gtk   # starting Transmission BitTorrent
$ firejail vlc                # starting VideoLAN Client
$ sudo firejail /etc/init.d/nginx start

Project webpage: https://firejail.wordpress.com/

Download and Installation: https://firejail.wordpress.com/download-2/

Features: https://firejail.wordpress.com/features-3/

Documentation: https://firejail.wordpress.com/documentation-2/

FAQ: https://firejail.wordpress.com/support/frequently-asked-questions/

Compile and install

$ git clone https://github.com/netblue30/firejail.git
$ cd firejail
$ ./configure && make && sudo make install-strip

On Debian/Ubuntu you will need to install git and a compiler:

$ sudo apt-get install git build-essential

User submitted profile repositories

If you keep your Firejail profiles in a public repository, please give us a link:

• https://github.com/chiraag-nataraj/firejail-profiles

• https://github.com/triceratops1/fe

Use this issue to request new profiles: netblue30#825

Current development version: 0.9.45

AppImage

Added AppImage type 2 support, and support for passing command line arguments to appimages.

New command line options

      --private-opt=file,directory
              Build  a  new /opt in a temporary filesystem, and copy the files
              and directories in the list.  If no listed file is  found,  /opt
              directory  will  be empty.  All modifications are discarded when
              the sandbox is closed.

              Example:
              $ firejail --private-opt=firefox /opt/firefox/firefox

       --private-srv=file,directory
              Build a new /srv in a temporary filesystem, and copy  the  files
              and  directories  in the list.  If no listed file is found, /srv
              directory will be empty.  All modifications are  discarded  when
              the sandbox is closed.

              Example:
              # firejail --private-srv=www /etc/init.d/apache2 start

      --machine-id
              Spoof id number in /etc/machine-id file - a  new  random  id  is
              generated inside the sandbox.

              Example:
              $ firejail --machine-id

       --allow-private-blacklist
              Allow  blacklisting  files in private home directory. By default
              these blacklists are disabled.

              Example:
              $   firejail    --allow-private-blacklist   --private=~/priv-dir
              --blacklist=~/.mozilla

      --hosts-file=file
              Use file as /etc/hosts.

              Example:
              $ firejail --hosts-file=~/myhosts firefox
             
      --writable-var-log
              Use the real /var/log directory, not  a  clone.  By  default,  a
              tmpfs  is  mounted  on top of /var/log directory, and a skeleton
              filesystem is created based on the original /var/log.

              Example:
              $ sudo firejail --writable-var-log
              
       --git-install
              Download, compile and install mainline git version  of  Firejail
              from  the  official  repository  on  GitHub.   The  software  is
              installed in /usr/local/bin, and takes precedence over the (old)
              version installed in /usr/bin. If for any reason the new version
              doesn't work, the user can uninstall  it  using  --git-uninstall
              command and revert to the old version.

              Prerequisites: git and compile support are required for this com‐
              mand to work. On Debian/Ubuntu systems this support is installed
              using "sudo apt-get install build-essential git".

              Example:

              $ firejail --git-install

       --git-uninstall
              Remove    the   Firejail   version   previously   installed   in
              /usr/local/bin using --git-install command.

              Example:

              $ firejail --git-uninstall

New Profiles

xiphos, Tor Browser Bundle, display (imagemagik), Wire, mumble, zoom, Guayadeque, qemu, keypass2, amarok, ark, atool, bleachbit, brasero, dolphin, dragon, elinks, enchant, exiftool, file-roller, gedit, gjs, gnome-books, gnome-clocks, gnome-documents, gnome-maps, gnome-music, gnome-photos, gnome-weather, goobox, gpa, gpg, gpg-agent, highlight, img2txt, k3b, kate, lynx, mediainfo, nautilus, odt2txt, pdftotext, simple-scan, skanlite, ssh-agent, tracker, transmission-cli, transmission-show, w3m, xfburn, xpra, wget, xed, pluma, Cryptocat, Bless, Gnome 2048, Gnome Calculator, Gnome Contacts, JD-GUI, Lollypop, MultiMC5, PDFSam, Pithos, Xonotic, wireshark, keepassx2, QupZilla, FossaMail, Uzbl browser, xmms, iridium browser, Kino, Thunar