apparmor.d/apparmor.d/userdel
2020-09-12 17:19:23 +02:00

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# vim:syntax=apparmor
# ------------------------------------------------------------------
#
# Copyright (C) 2019-2020 Mikhail Morfikov
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of version 2 of the GNU General Public
# License published by the Free Software Foundation.
#
# ------------------------------------------------------------------
#abi <abi/3.0>,
#include <tunables/global>
@{exec_path} = /{usr/,}sbin/userdel
profile userdel @{exec_path} flags=(attach_disconnected) {
#include <abstractions/base>
#include <abstractions/consoles>
#include <abstractions/nameservice-strict>
# The userdel command is issued as root and its task is to delete regular user accounts. It
# optionally can remove user files (via --remove). Because of that, the userdel command needs the
# following CAPs to be able to do so.
capability dac_read_search,
capability dac_override,
# To write records to the kernel auditing log.
capability audit_write,
# To set the right permission to the files in the /etc/ dir).
capability chown,
capability fsetid,
# To prevent removing a user when it's used by some process.
capability sys_ptrace,
ptrace (read),
@{exec_path} mr,
/etc/login.defs r,
@{PROC}/ r,
@{PROC}/@{pids}/task/ r,
/etc/{passwd,shadow,gshadow,group,subuid,subgid} rw,
/etc/{passwd,shadow,gshadow,group,subuid,subgid}.@{pid} w,
/etc/{passwd,shadow,gshadow,group,subuid,subgid}- w,
/etc/{passwd,shadow,gshadow,group,subuid,subgid}+ rw,
/etc/passwd.lock wl -> /etc/passwd.@{pid},
/etc/shadow.lock wl -> /etc/shadow.@{pid},
/etc/group.lock wl -> /etc/group.@{pid},
/etc/gshadow.lock wl -> /etc/gshadow.@{pid},
/etc/subuid.lock wl -> /etc/subuid.@{pid},
/etc/subgid.lock wl -> /etc/subgid.@{pid},
# A process first uses lckpwdf() to lock the lock file, thereby gaining exclusive rights to
# modify the /etc/passwd or /etc/shadow password database.
/etc/.pwd.lock rwk,
# To remove user home files
@{HOME}/ rw,
@{HOME}/** w,
# To remove user mail
/var/mail/* w,
#include if exists <local/userdel>
}