Subject: Re: [PATCH 5/5] Add chromium policy upstreamed from Gentoo
To:     Jason Zaman <jason@perfinion.com>,
        selinux-refpolicy@vger.kernel.org
References: <20190112080344.10031-1-jason@perfinion.com>
 <20190112080344.10031-5-jason@perfinion.com>
From:   Chris PeBenito <pebenito@ieee.org>
Message-ID: <d73f919d-318b-bace-2ad8-51377fee6760@ieee.org>
Date:   Wed, 23 Jan 2019 18:49:16 -0500
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On 1/12/19 3:03 AM, Jason Zaman wrote:
> Signed-off-by: Jason Zaman <jason@perfinion.com>
> ---
>   policy/modules/apps/chromium.fc |  31 +++
>   policy/modules/apps/chromium.if | 139 +++++++++++++
>   policy/modules/apps/chromium.te | 342 ++++++++++++++++++++++++++++++++
>   3 files changed, 512 insertions(+)
>   create mode 100644 policy/modules/apps/chromium.fc
>   create mode 100644 policy/modules/apps/chromium.if
>   create mode 100644 policy/modules/apps/chromium.te
> 
> diff --git a/policy/modules/apps/chromium.fc b/policy/modules/apps/chromium.fc
> new file mode 100644
> index 00000000..534235dc
> --- /dev/null
> +++ b/policy/modules/apps/chromium.fc
> @@ -0,0 +1,31 @@
> +/opt/google/chrome/chrome				--	gen_context(system_u:object_r:chromium_exec_t,s0)
> +/opt/google/chrome/chrome_sandbox			--	gen_context(system_u:object_r:chromium_sandbox_exec_t,s0)
> +/opt/google/chrome/chrome-sandbox			--	gen_context(system_u:object_r:chromium_sandbox_exec_t,s0)
> +/opt/google/chrome/google-chrome			--	gen_context(system_u:object_r:chromium_exec_t,s0)
> +/opt/google/chrome/nacl_helper_bootstrap		--	gen_context(system_u:object_r:chromium_naclhelper_exec_t,s0)
> +/opt/google/chrome/libudev.so.0					gen_context(system_u:object_r:lib_t,s0)
> +
> +/opt/google/chrome-beta/chrome				--	gen_context(system_u:object_r:chromium_exec_t,s0)
> +/opt/google/chrome-beta/chrome_sandbox			--	gen_context(system_u:object_r:chromium_sandbox_exec_t,s0)
> +/opt/google/chrome-beta/chrome-sandbox			--	gen_context(system_u:object_r:chromium_sandbox_exec_t,s0)
> +/opt/google/chrome-beta/google-chrome			--	gen_context(system_u:object_r:chromium_exec_t,s0)
> +/opt/google/chrome-beta/nacl_helper_bootstrap		--	gen_context(system_u:object_r:chromium_naclhelper_exec_t,s0)
> +/opt/google/chrome-beta/libudev.so.0				gen_context(system_u:object_r:lib_t,s0)
> +
> +/opt/google/chrome-unstable/chrome			--	gen_context(system_u:object_r:chromium_exec_t,s0)
> +/opt/google/chrome-unstable/chrome_sandbox		--	gen_context(system_u:object_r:chromium_sandbox_exec_t,s0)
> +/opt/google/chrome-unstable/chrome-sandbox		--	gen_context(system_u:object_r:chromium_sandbox_exec_t,s0)
> +/opt/google/chrome-unstable/google-chrome		--	gen_context(system_u:object_r:chromium_exec_t,s0)
> +/opt/google/chrome-unstable/nacl_helper_bootstrap	--	gen_context(system_u:object_r:chromium_naclhelper_exec_t,s0)
> +/opt/google/chrome-unstable/libudev.so.0			gen_context(system_u:object_r:lib_t,s0)
> +
> +/usr/lib/chromium-browser/chrome			--	gen_context(system_u:object_r:chromium_exec_t,s0)
> +/usr/lib/chromium-browser/chrome_sandbox		--	gen_context(system_u:object_r:chromium_sandbox_exec_t,s0)
> +/usr/lib/chromium-browser/chrome-sandbox		--	gen_context(system_u:object_r:chromium_sandbox_exec_t,s0)
> +/usr/lib/chromium-browser/chromium-launcher\.sh		--	gen_context(system_u:object_r:chromium_exec_t,s0)
> +/usr/lib/chromium-browser/nacl_helper_bootstrap		--	gen_context(system_u:object_r:chromium_naclhelper_exec_t,s0)
> +
> +HOME_DIR/\.cache/chromium(/.*)?					gen_context(system_u:object_r:chromium_xdg_cache_t,s0)
> +HOME_DIR/\.cache/google-chrome(/.*)?				gen_context(system_u:object_r:chromium_xdg_cache_t,s0)
> +HOME_DIR/\.config/chromium(/.*)?				gen_context(system_u:object_r:chromium_xdg_config_t,s0)
> +HOME_DIR/\.config/google-chrome(/.*)?				gen_context(system_u:object_r:chromium_xdg_config_t,s0)
> diff --git a/policy/modules/apps/chromium.if b/policy/modules/apps/chromium.if
> new file mode 100644
> index 00000000..26eb0259
> --- /dev/null
> +++ b/policy/modules/apps/chromium.if
> @@ -0,0 +1,139 @@
> +## <summary>
> +##	Chromium browser
> +## </summary>
> +
> +#######################################
> +## <summary>
> +## 	Role access for chromium
> +## </summary>
> +## <param name="role">
> +##	<summary>
> +##	Role allowed access
> +##	</summary>
> +## </param>
> +## <param name="domain">
> +## 	<summary>
> +##	User domain for the role
> +##	</summary>
> +## </param>
> +#
> +interface(`chromium_role',`
> +	gen_require(`
> +		type chromium_t;
> +		type chromium_renderer_t;
> +		type chromium_sandbox_t;
> +		type chromium_naclhelper_t;
> +		type chromium_exec_t;
> +	')
> +
> +	role $1 types chromium_t;
> +	role $1 types chromium_renderer_t;
> +	role $1 types chromium_sandbox_t;
> +	role $1 types chromium_naclhelper_t;
> +
> +	# Transition from the user domain to the derived domain
> +	chromium_domtrans($2)
> +
> +	# Allow ps to show chromium processes and allow the user to signal it
> +	ps_process_pattern($2, chromium_t)
> +	ps_process_pattern($2, chromium_renderer_t)
> +
> +	allow $2 chromium_t:process signal_perms;
> +	allow $2 chromium_renderer_t:process signal_perms;
> +	allow $2 chromium_naclhelper_t:process signal_perms;
> +
> +	allow chromium_sandbox_t $2:fd use;
> +	allow chromium_naclhelper_t $2:fd use;
> +')
> +
> +#######################################
> +## <summary>
> +##	Read-write access to Chromiums' temporary fifo files
> +## </summary>
> +## <param name="domain">
> +## 	<summary>
> +##	Domain allowed access
> +##	</summary>
> +## </param>
> +#
> +interface(`chromium_rw_tmp_pipes',`
> +	gen_require(`
> +		type chromium_tmp_t;
> +	')
> +
> +	rw_fifo_files_pattern($1, chromium_tmp_t, chromium_tmp_t)
> +')
> +
> +##############################################
> +## <summary>
> +##	Automatically use the specified type for resources created in chromium's
> +##	temporary locations
> +## </summary>
> +## <param name="domain">
> +##	<summary>
> +##	Domain that creates the resource(s)
> +##	</summary>
> +## </param>
> +## <param name="class">
> +##	<summary>
> +##	Type of the resource created
> +##	</summary>
> +## </param>
> +## <param name="filename" optional="true">
> +##	<summary>
> +##	The name of the resource being created
> +##	</summary>
> +## </param>
> +#
> +interface(`chromium_tmp_filetrans',`
> +	gen_require(`
> +		type chromium_tmp_t;
> +	')
> +
> +	search_dirs_pattern($1, chromium_tmp_t, chromium_tmp_t)
> +	filetrans_pattern($1, chromium_tmp_t, $2, $3, $4)
> +')
> +
> +#######################################
> +## <summary>
> +## 	Execute a domain transition to the chromium domain (chromium_t)
> +## </summary>
> +## <param name="domain">
> +## 	<summary>
> +##	Domain allowed access
> +##	</summary>
> +## </param>
> +#
> +interface(`chromium_domtrans',`
> +	gen_require(`
> +		type chromium_t;
> +		type chromium_exec_t;
> +	')
> +
> +	corecmd_search_bin($1)
> +	domtrans_pattern($1, chromium_exec_t, chromium_t)
> +')
> +
> +#######################################
> +## <summary>
> +## 	Execute chromium in the chromium domain and allow the specified role to access the chromium domain
> +## </summary>
> +## <param name="domain">
> +## 	<summary>
> +##	Domain allowed access
> +##	</summary>
> +## </param>
> +## <param name="role">
> +##	<summary>
> +##	Role allowed access
> +##	</summary>
> +## </param>
> +#
> +interface(`chromium_run',`
> +	gen_require(`
> +		type chromium_t;
> +	')
> +
> +	chromium_domtrans($1)
> +	role $2 types chromium_t;
> +')
> diff --git a/policy/modules/apps/chromium.te b/policy/modules/apps/chromium.te
> new file mode 100644
> index 00000000..5219cb87
> --- /dev/null
> +++ b/policy/modules/apps/chromium.te
> @@ -0,0 +1,342 @@
> +policy_module(chromium, 1.0.0)
> +
> +########################################
> +#
> +# Declarations
> +#
> +
> +## <desc>
> +## <p>
> +## Allow chromium to read system information
> +## </p>
> +## <p>
> +## Although not needed for regular browsing, this will allow chromium to update
> +## its own memory consumption based on system state, support additional
> +## debugging, detect specific devices, etc.
> +## </p>
> +## </desc>
> +gen_tunable(chromium_read_system_info, false)
> +
> +## <desc>
> +## <p>
> +## Allow chromium to bind to tcp ports
> +## </p>
> +## <p>
> +## Although not needed for regular browsing, some chrome extensions need to
> +## bind to tcp ports and accept connections.
> +## </p>
> +## </desc>
> +gen_tunable(chromium_bind_tcp_unreserved_ports, false)
> +
> +## <desc>
> +## <p>
> +## Allow chromium to read/write USB devices
> +## </p>
> +## <p>
> +## Although not needed for regular browsing, used for debugging over usb
> +## or using FIDO U2F tokens.
> +## </p>
> +## </desc>
> +gen_tunable(chromium_rw_usb_dev, false)
> +
> +type chromium_t;
> +domain_dyntrans_type(chromium_t)
> +
> +type chromium_exec_t;
> +application_domain(chromium_t, chromium_exec_t)
> +
> +type chromium_naclhelper_t;
> +type chromium_naclhelper_exec_t;
> +application_domain(chromium_naclhelper_t, chromium_naclhelper_exec_t)
> +
> +type chromium_sandbox_t;
> +type chromium_sandbox_exec_t;
> +application_domain(chromium_sandbox_t, chromium_sandbox_exec_t)
> +
> +type chromium_renderer_t;
> +domain_base_type(chromium_renderer_t)
> +
> +type chromium_tmp_t;
> +userdom_user_tmp_file(chromium_tmp_t)
> +
> +type chromium_tmpfs_t;
> +userdom_user_tmpfs_file(chromium_tmpfs_t)
> +optional_policy(`
> +	pulseaudio_tmpfs_content(chromium_tmpfs_t)
> +')
> +
> +type chromium_xdg_config_t;
> +xdg_config_content(chromium_xdg_config_t)
> +
> +type chromium_xdg_cache_t;
> +xdg_cache_content(chromium_xdg_cache_t)
> +
> +
> +
> +########################################
> +#
> +# chromium local policy
> +#
> +
> +# execmem for load in plugins
> +allow chromium_t self:process { execmem getsched getcap setcap setrlimit setsched sigkill signal };
> +allow chromium_t self:fifo_file rw_fifo_file_perms;
> +allow chromium_t self:sem create_sem_perms;
> +allow chromium_t self:netlink_kobject_uevent_socket client_stream_socket_perms;
> +# cap_userns sys_admin for the sandbox
> +allow chromium_t self:cap_userns { sys_admin sys_chroot sys_ptrace };
> +
> +allow chromium_t chromium_exec_t:file execute_no_trans;
> +
> +allow chromium_t chromium_renderer_t:dir list_dir_perms;
> +allow chromium_t chromium_renderer_t:file rw_file_perms;
> +allow chromium_t chromium_renderer_t:fd use;
> +allow chromium_t chromium_renderer_t:process signal_perms;
> +allow chromium_t chromium_renderer_t:shm rw_shm_perms;
> +allow chromium_t chromium_renderer_t:unix_dgram_socket { read write };
> +allow chromium_t chromium_renderer_t:unix_stream_socket { read write };
> +
> +allow chromium_t chromium_sandbox_t:unix_dgram_socket { read write };
> +allow chromium_t chromium_sandbox_t:unix_stream_socket { read write };
> +
> +allow chromium_t chromium_naclhelper_t:process { share };
> +
> +# tmp has a wide class access (used for plugins)
> +manage_files_pattern(chromium_t, chromium_tmp_t, chromium_tmp_t)
> +allow chromium_t chromium_tmp_t:file map;
> +manage_dirs_pattern(chromium_t, chromium_tmp_t, chromium_tmp_t)
> +manage_lnk_files_pattern(chromium_t, chromium_tmp_t, chromium_tmp_t)
> +manage_sock_files_pattern(chromium_t, chromium_tmp_t, chromium_tmp_t)
> +manage_fifo_files_pattern(chromium_t, chromium_tmp_t, chromium_tmp_t)
> +files_tmp_filetrans(chromium_t, chromium_tmp_t, { file dir sock_file })
> +
> +manage_files_pattern(chromium_t, chromium_tmpfs_t, chromium_tmpfs_t)
> +allow chromium_t chromium_tmpfs_t:file map;
> +fs_tmpfs_filetrans(chromium_t, chromium_tmpfs_t, file)
> +fs_tmpfs_filetrans(chromium_renderer_t, chromium_tmpfs_t, file)
> +
> +manage_files_pattern(chromium_t, chromium_xdg_config_t, chromium_xdg_config_t)
> +allow chromium_t chromium_xdg_config_t:file map;
> +manage_lnk_files_pattern(chromium_t, chromium_xdg_config_t, chromium_xdg_config_t)
> +manage_dirs_pattern(chromium_t, chromium_xdg_config_t, chromium_xdg_config_t)
> +xdg_config_filetrans(chromium_t, chromium_xdg_config_t, dir, "chromium")
> +
> +manage_files_pattern(chromium_t, chromium_xdg_cache_t, chromium_xdg_cache_t)
> +allow chromium_t chromium_xdg_cache_t:file map;
> +manage_dirs_pattern(chromium_t, chromium_xdg_cache_t, chromium_xdg_cache_t)
> +xdg_cache_filetrans(chromium_t, chromium_xdg_cache_t, dir, "chromium")
> +
> +dyntrans_pattern(chromium_t, chromium_renderer_t)
> +domtrans_pattern(chromium_t, chromium_sandbox_exec_t, chromium_sandbox_t)
> +domtrans_pattern(chromium_t, chromium_naclhelper_exec_t, chromium_naclhelper_t)
> +
> +kernel_list_proc(chromium_t)
> +kernel_read_net_sysctls(chromium_t)
> +
> +corecmd_exec_bin(chromium_t)
> +# Look for /etc/gentoo-release through a shell invocation running find
> +corecmd_exec_shell(chromium_t)
> +
> +corenet_tcp_connect_all_unreserved_ports(chromium_t)
> +corenet_tcp_connect_ftp_port(chromium_t)
> +corenet_tcp_connect_http_port(chromium_t)
> +corenet_udp_bind_generic_node(chromium_t)
> +corenet_udp_bind_all_unreserved_ports(chromium_t)
> +
> +dev_read_sound(chromium_t)
> +dev_write_sound(chromium_t)
> +dev_read_urand(chromium_t)
> +dev_read_rand(chromium_t)
> +dev_rw_xserver_misc(chromium_t)
> +dev_map_xserver_misc(chromium_t)
> +
> +domain_dontaudit_search_all_domains_state(chromium_t)
> +
> +files_list_home(chromium_t)
> +files_search_home(chromium_t)
> +files_read_usr_files(chromium_t)
> +files_map_usr_files(chromium_t)
> +files_read_etc_files(chromium_t)
> +# During find for /etc/whatever-release we get lots of output otherwise
> +files_dontaudit_getattr_all_dirs(chromium_t)
> +
> +fs_dontaudit_getattr_xattr_fs(chromium_t)
> +
> +miscfiles_read_all_certs(chromium_t)
> +miscfiles_read_localization(chromium_t)
> +
> +sysnet_dns_name_resolve(chromium_t)
> +
> +userdom_user_content_access_template(chromium, chromium_t)
> +userdom_dontaudit_list_user_home_dirs(chromium_t)
> +# Debugging. Also on user_tty_device_t if X is started through "startx" for instance
> +userdom_use_user_terminals(chromium_t)
> +userdom_manage_user_certs(chromium_t)
> +userdom_user_home_dir_filetrans_user_cert(chromium_t, dir, ".pki")
> +
> +xdg_create_cache_dirs(chromium_t)
> +xdg_create_config_dirs(chromium_t)
> +xdg_create_data_dirs(chromium_t)
> +xdg_manage_downloads(chromium_t)
> +xdg_read_config_files(chromium_t)
> +xdg_read_data_files(chromium_t)
> +
> +xserver_user_x_domain_template(chromium, chromium_t, chromium_tmpfs_t)
> +
> +tunable_policy(`chromium_bind_tcp_unreserved_ports',`
> +	corenet_tcp_bind_generic_node(chromium_t)
> +	corenet_tcp_bind_all_unreserved_ports(chromium_t)
> +	allow chromium_t self:tcp_socket { listen accept };
> +')
> +
> +tunable_policy(`chromium_rw_usb_dev',`
> +	dev_rw_generic_usb_dev(chromium_t)
> +	udev_read_db(chromium_t)
> +')
> +
> +tunable_policy(`chromium_read_system_info',`
> +	kernel_read_kernel_sysctls(chromium_t)
> +	# Memory optimizations & optimizations based on OS/version
> +	kernel_read_system_state(chromium_t)
> +
> +	# Debugging (sys/kernel/debug) and device information (sys/bus and sys/devices).
> +	dev_read_sysfs(chromium_t)
> +
> +	storage_getattr_fixed_disk_dev(chromium_t)
> +
> +	files_read_etc_runtime_files(chromium_t)
> +
> +	dev_dontaudit_getattr_all_chr_files(chromium_t)
> +	init_dontaudit_getattr_initctl(chromium_t)
> +',`
> +	kernel_dontaudit_read_kernel_sysctl(chromium_t)
> +	kernel_dontaudit_read_system_state(chromium_t)
> +
> +	dev_dontaudit_read_sysfs(chromium_t)
> +
> +	files_dontaudit_read_etc_runtime_files(chromium_t)
> +')
> +
> +optional_policy(`
> +	cups_read_config(chromium_t)
> +	cups_stream_connect(chromium_t)
> +')
> +
> +optional_policy(`
> +	dbus_all_session_bus_client(chromium_t)
> +	dbus_system_bus_client(chromium_t)
> +
> +	optional_policy(`
> +		unconfined_dbus_chat(chromium_t)
> +	')
> +	optional_policy(`
> +		gnome_dbus_chat_all_gkeyringd(chromium_t)
> +	')
> +	optional_policy(`
> +		devicekit_dbus_chat_power(chromium_t)
> +	')
> +')
> +
> +ifdef(`use_alsa',`
> +	optional_policy(`
> +		alsa_domain(chromium_t, chromium_tmpfs_t)
> +	')
> +
> +	optional_policy(`
> +		pulseaudio_domtrans(chromium_t)
> +	')
> +')
> +
> +########################################
> +#
> +# chromium_renderer local policy
> +#
> +
> +allow chromium_renderer_t self:process execmem;
> +
> +allow chromium_renderer_t self:fifo_file rw_fifo_file_perms;
> +allow chromium_renderer_t self:shm create_shm_perms;
> +allow chromium_renderer_t self:unix_dgram_socket { create read sendto };
> +allow chromium_renderer_t self:unix_stream_socket { create getattr read write };
> +
> +allow chromium_renderer_t chromium_t:fd use;
> +allow chromium_renderer_t chromium_t:unix_stream_socket rw_stream_socket_perms;
> +allow chromium_renderer_t chromium_tmpfs_t:file rw_file_perms;
> +
> +dontaudit chromium_renderer_t chromium_t:dir search;	# /proc/... access
> +dontaudit chromium_renderer_t self:process getsched;
> +
> +read_files_pattern(chromium_renderer_t, chromium_xdg_config_t, chromium_xdg_config_t)
> +
> +rw_fifo_files_pattern(chromium_renderer_t, chromium_tmp_t, chromium_tmp_t)
> +
> +dev_read_urand(chromium_renderer_t)
> +
> +files_dontaudit_list_tmp(chromium_renderer_t)
> +files_dontaudit_read_etc_files(chromium_renderer_t)
> +files_search_var(chromium_renderer_t)
> +
> +init_sigchld(chromium_renderer_t)
> +
> +miscfiles_read_localization(chromium_renderer_t)
> +
> +userdom_dontaudit_use_all_users_fds(chromium_renderer_t)
> +userdom_use_user_terminals(chromium_renderer_t)
> +
> +xdg_read_config_files(chromium_renderer_t)
> +
> +xserver_user_x_domain_template(chromium_renderer, chromium_renderer_t, chromium_tmpfs_t)
> +
> +tunable_policy(`chromium_read_system_info',`
> +	kernel_read_kernel_sysctls(chromium_renderer_t)
> +	kernel_read_system_state(chromium_renderer_t)
> +',`
> +	kernel_dontaudit_read_kernel_sysctl(chromium_renderer_t)
> +	kernel_dontaudit_read_system_state(chromium_renderer_t)
> +')
> +
> +#########################################
> +#
> +# Chromium sandbox local policy
> +#
> +
> +allow chromium_sandbox_t self:capability { dac_read_search setgid setuid sys_admin sys_chroot sys_ptrace };
> +allow chromium_sandbox_t self:process { setrlimit };
> +allow chromium_sandbox_t self:unix_stream_socket create_stream_socket_perms;
> +
> +allow chromium_sandbox_t chromium_t:process { share };
> +# /proc access
> +allow chromium_sandbox_t chromium_t:dir list_dir_perms;
> +allow chromium_sandbox_t chromium_t:lnk_file read_lnk_file_perms;
> +allow chromium_sandbox_t chromium_t:file rw_file_perms;
> +
> +allow chromium_sandbox_t chromium_t:unix_stream_socket { read write };
> +allow chromium_sandbox_t chromium_t:unix_dgram_socket { read write };
> +
> +kernel_list_proc(chromium_sandbox_t)
> +
> +domain_dontaudit_read_all_domains_state(chromium_sandbox_t)
> +
> +userdom_use_user_ptys(chromium_sandbox_t)
> +
> +chromium_domtrans(chromium_sandbox_t)
> +
> +##########################################
> +#
> +# Chromium nacl helper local policy
> +#
> +
> +allow chromium_naclhelper_t chromium_t:unix_stream_socket { read write };
> +
> +domain_mmap_low_uncond(chromium_naclhelper_t)
> +
> +userdom_use_user_ptys(chromium_naclhelper_t)
> +
> +tunable_policy(`chromium_read_system_info',`
> +	kernel_read_kernel_sysctls(chromium_naclhelper_t)
> +	kernel_read_system_state(chromium_naclhelper_t)
> +',`
> +	kernel_dontaudit_read_kernel_sysctl(chromium_naclhelper_t)
> +	kernel_dontaudit_read_system_state(chromium_naclhelper_t)
> +')
> +

This set is merged.

-- 
Chris PeBenito