apparmor.d/profiles/newgrp

# apparmor.d - Full set of apparmor profiles
# Copyright (C) 2020-2021 Mikhail Morfikov
# SPDX-License-Identifier: GPL-2.0-only

abi <abi/3.0>,

include <tunables/global>

@{exec_path} = /{usr/,}bin/newgrp
profile newgrp @{exec_path} {
  include <abstractions/base>
  include <abstractions/nameservice-strict>

  # To write records to the kernel auditing log.
  capability audit_write,

  # To remove the following errors:
  #  setgroups: Operation not permitted
  #  setgid: Operation not permitted
  capability setgid,

  # newgrp is a SETUID binary
  capability setuid,

  network netlink raw,

  @{exec_path} mr,

  # Shells to use
  /{usr/,}bin/{,b,d,rb}ash rPUx,
  /{usr/,}bin/{c,k,tc,z}sh rPUx,

  /etc/{passwd,group,shadow,gshadow} r,

  /etc/login.defs r,

  owner @{PROC}/@{pid}/loginuid r,

  include if exists <local/newgrp>
}