firefox-with-net.cfg

# Example config for nsjail

name: "firefox-with-net"

description: "This policy allows to run firefox inside a jail. Access to networking is"
description: "permitted with this setup (clone_newnet: false)."
description: ""
description: "The only permitted home directory is $HOME/.mozilla and $HOME/Documents."
description: "The rest of available on the FS files/dires are libs and X-related files/dirs."
description: ""
description: "Run as:"
description: ""
description: "./nsjail --config configs/firefox-with-net.cfg"
description: ""
description: "You can then go to https://uploadfiles.io/ and try to upload a file in order"
description: "to see how your local directory (also, all system directories) look like."

mode: ONCE
hostname: "FIREFOX"
cwd: "/user"

time_limit: 0

clone_newnet: false

envar: "HOME=/user"
envar: "DISPLAY"
envar: "TMP=/tmp"
envar: "FONTCONFIG_FILE=/etc/fonts/fonts.conf"
envar: "FC_CONFIG_FILE=/etc/fonts/fonts.conf"

rlimit_as: 4096
rlimit_cpu: 1000
rlimit_fsize: 1024
rlimit_nofile: 512

uidmap {
	inside_id: "9999999"
}

gidmap {
	inside_id: "9999999"
}

mount {
	dst: "/proc"
	fstype: "proc"
	rw: true
}

mount {
	src: "/lib"
	dst: "/lib"
	is_bind: true
}

mount {
	src: "/usr/lib"
	dst: "/usr/lib"
	is_bind: true
}

mount {
	src: "/lib64"
	dst: "/lib64"
	is_bind: true
	mandatory: false
}

mount {
	src: "/lib32"
	dst: "/lib32"
	is_bind: true
	mandatory: false
}

mount {
	src: "/usr/lib/firefox"
	dst: "/usr/lib/firefox"
	is_bind: true
}

mount {
	src: "/usr/bin/firefox"
	dst: "/usr/bin/firefox"
	is_bind: true
}

mount {
	src: "/usr/share"
	dst: "/usr/share"
	is_bind: true
}

mount {
	src_content: "<?xml version=\"1.0\"?>\n<!DOCTYPE fontconfig SYSTEM \"fonts.dtd\">\n<fontconfig><dir>/usr/share/fonts</dir><cachedir>/tmp/fontconfig</cachedir></fontconfig>"
	dst: "/etc/fonts/fonts.conf"
}

mount {
	src: "/dev/urandom"
	dst: "/dev/urandom"
	is_bind: true
	rw: true
}

mount {
	src: "/dev/null"
	dst: "/dev/null"
	is_bind: true
	rw: true
}

mount {
	src_content: "nameserver 8.8.8.8"
	dst: "/etc/resolv.conf"
}

mount {
	dst: "/tmp"
	fstype: "tmpfs"
	rw: true
	is_bind: false
}

mount {
	dst: "/dev/shm"
	fstype: "tmpfs"
	rw: true
	is_bind: false
}

mount {
	dst: "/user"
	fstype: "tmpfs"
	rw: true
}

mount {
	prefix_src_env: "HOME"
	src: "/Documents"
	dst: "/user/Documents"
	rw: true
	is_bind: true
	mandatory: false
}

mount {
	prefix_src_env: "HOME"
	src: "/.mozilla"
	dst: "/user/.mozilla"
	is_bind: true
	rw: true
	mandatory: false
}

mount {
	prefix_src_env: "XAUTHORITY"
	src: ""
	dst: "/user/.Xauthority"
	is_bind: true
	rw: false
	mandatory: false
}

 mount {
	src: "/tmp/.X11-unix/X0"
	dst: "/tmp/.X11-unix/X0"
	is_bind: true
	mandatory: false
}

mount {
	src: "/tmp/.X11-unix/X1"
	dst: "/tmp/.X11-unix/X1"
	is_bind: true
	mandatory: false
}

seccomp_string: "KILL_PROCESS {"
seccomp_string: "	ptrace,"
seccomp_string: "	process_vm_readv,"
seccomp_string: "	process_vm_writev"
seccomp_string: "}"
seccomp_string: "DEFAULT ALLOW"

exec_bin {
	path: "/usr/lib/firefox/firefox"
}