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Message-ID: <e4934027-8b31-3218-e9f1-5e9c5aacbda1@ieee.org>
Date:   Mon, 28 Feb 2022 16:01:02 -0500
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Subject: Re: [PATCH] mailman3 V2.1
Content-Language: en-US
To:     Russell Coker <russell@coker.com.au>,
        selinux-refpolicy@vger.kernel.org
References: <YhDHwUUJcxfw9+sP@xev.coker.com.au>
From:   Chris PeBenito <pebenito@ieee.org>
In-Reply-To: <YhDHwUUJcxfw9+sP@xev.coker.com.au>
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On 2/19/22 05:34, Russell Coker wrote:
> Same as the previous but also allow web server to map mailman data files.
> 
> Signed-off-by: Russell Coker <russell@coker.com.au>
> 
> Index: refpolicy-2.20220219/policy/modules/services/mailman.if
> ===================================================================
> --- refpolicy-2.20220219.orig/policy/modules/services/mailman.if
> +++ refpolicy-2.20220219/policy/modules/services/mailman.if
> @@ -109,6 +109,44 @@ interface(`mailman_domtrans_cgi',`
>   
>   #######################################
>   ## <summary>
> +##	Talk to mailman_cgi_t via Unix domain socket
> +## </summary>
> +## <param name="domain">
> +##	<summary>
> +##	Domain talking to mailman
> +##	</summary>
> +## </param>
> +#
> +interface(`mailman_stream_connect_cgi',`
> +	gen_require(`
> +		type mailman_cgi_t, mailman_runtime_t;
> +	')
> +
> +	files_search_runtime($1)
> +	stream_connect_pattern($1, mailman_runtime_t, mailman_runtime_t, mailman_cgi_t)
> +')
> +
> +#######################################
> +## <summary>
> +##	Manage mailman runtime files
> +## </summary>
> +## <param name="domain">
> +##	<summary>
> +##	Domain to manage the files
> +##	</summary>
> +## </param>
> +#
> +interface(`mailman_manage_runtime_files',`
> +	gen_require(`
> +		type mailman_runtime_t;
> +	')
> +
> +	files_search_runtime($1)
> +	manage_files_pattern($1, mailman_runtime_t, mailman_runtime_t)
> +')
> +
> +#######################################
> +## <summary>
>   ##	Execute mailman in the caller domain.
>   ## </summary>
>   ## <param name="domain">
> @@ -186,6 +224,24 @@ interface(`mailman_read_data_files',`
>   
>   #######################################
>   ## <summary>
> +##	map mailman data content.
> +## </summary>
> +## <param name="domain">
> +##	<summary>
> +##	Domain allowed access.
> +##	</summary>
> +## </param>
> +#
> +interface(`mailman_map_data_files',`
> +	gen_require(`
> +		type mailman_data_t;
> +	')
> +
> +	allow $1 mailman_data_t:file map;
> +')
> +
> +#######################################
> +## <summary>
>   ##	Create, read, write, and delete
>   ##	mailman data files.
>   ## </summary>
> @@ -342,3 +398,21 @@ interface(`mailman_domtrans_queue',`
>   	libs_search_lib($1)
>   	domtrans_pattern($1, mailman_queue_exec_t, mailman_queue_t)
>   ')
> +
> +#######################################
> +## <summary>
> +##	Manage mailman lock dir
> +## </summary>
> +## <param name="domain">
> +##	<summary>
> +##	Domain allowed to manage it.
> +##	</summary>
> +## </param>
> +#
> +interface(`mailman_manage_lockdir',`
> +	gen_require(`
> +		type mailman_lock_t;
> +	')
> +
> +	allow $1 mailman_lock_t:dir manage_dir_perms;
> +')
> Index: refpolicy-2.20220219/policy/modules/services/mailman.te
> ===================================================================
> --- refpolicy-2.20220219.orig/policy/modules/services/mailman.te
> +++ refpolicy-2.20220219/policy/modules/services/mailman.te
> @@ -10,6 +10,7 @@ attribute mailman_domain;
>   attribute_role mailman_roles;
>   
>   mailman_domain_template(cgi)
> +init_daemon_domain(mailman_cgi_t, mailman_cgi_exec_t)
>   
>   type mailman_data_t;
>   files_type(mailman_data_t)
> @@ -26,11 +27,18 @@ files_lock_file(mailman_lock_t)
>   type mailman_runtime_t alias mailman_var_run_t;
>   files_runtime_file(mailman_runtime_t)
>   
> +type mailman_cgi_tmpfs_t;
> +files_tmpfs_file(mailman_cgi_tmpfs_t)
> +
> +type mailman_queue_tmpfs_t;
> +files_tmpfs_file(mailman_queue_tmpfs_t)
> +
>   mailman_domain_template(mail)
>   init_daemon_domain(mailman_mail_t, mailman_mail_exec_t)
>   role mailman_roles types mailman_mail_t;
>   
>   mailman_domain_template(queue)
> +init_daemon_domain(mailman_queue_t, mailman_queue_exec_t)
>   
>   ########################################
>   #
> @@ -89,13 +97,16 @@ miscfiles_read_localization(mailman_doma
>   # CGI local policy
>   #
>   
> -allow mailman_cgi_t self:unix_dgram_socket { create connect };
> +allow mailman_cgi_t self:process { signal signull sigkill };
> +allow mailman_cgi_t self:fifo_file rw_fifo_file_perms;
> +allow mailman_cgi_t self:capability { dac_override setgid setuid };
> +allow mailman_cgi_t self:unix_dgram_socket create_socket_perms;
>   
>   allow mailman_cgi_t mailman_archive_t:dir search_dir_perms;
>   allow mailman_cgi_t mailman_archive_t:file read_file_perms;
>   
>   allow mailman_cgi_t mailman_data_t:dir rw_dir_perms;
> -allow mailman_cgi_t mailman_data_t:file manage_file_perms;
> +allow mailman_cgi_t mailman_data_t:file { map manage_file_perms };
>   allow mailman_cgi_t mailman_data_t:lnk_file read_lnk_file_perms;
>   
>   allow mailman_cgi_t mailman_lock_t:dir manage_dir_perms;
> @@ -104,11 +115,27 @@ allow mailman_cgi_t mailman_lock_t:file
>   allow mailman_cgi_t mailman_log_t:file { append_file_perms read_file_perms };
>   allow mailman_cgi_t mailman_log_t:dir search_dir_perms;
>   
> +allow mailman_cgi_t mailman_runtime_t:dir rw_dir_perms;
> +allow mailman_cgi_t mailman_runtime_t:file read_file_perms;
> +allow mailman_cgi_t mailman_runtime_t:sock_file manage_file_perms;
> +
> +fs_tmpfs_filetrans(mailman_cgi_t, mailman_cgi_tmpfs_t, file)
> +allow mailman_cgi_t mailman_cgi_tmpfs_t:file { map manage_file_perms };
> +
>   kernel_read_crypto_sysctls(mailman_cgi_t)
> +kernel_read_net_sysctls(mailman_cgi_t)
>   kernel_read_system_state(mailman_cgi_t)
> +kernel_read_vm_overcommit_sysctl(mailman_cgi_t)
>   
> +# need SELinuxContext=system_u:system_r:mailman_cgi_t:s0 in the systemd
> +# service file for the correct context on running /usr/bin/uwsgi for
> +# mailman3-web
> +corecmd_bin_entry_type(mailman_cgi_t)

Why can't the label be changed for uwsgi?


>   corecmd_exec_bin(mailman_cgi_t)
>   
> +corenet_tcp_bind_generic_node(mailman_cgi_t)
> +corenet_tcp_connect_all_unreserved_ports(mailman_cgi_t)
> +
>   dev_read_urand(mailman_cgi_t)
>   
>   files_search_locks(mailman_cgi_t)
> @@ -120,9 +147,9 @@ libs_dontaudit_write_lib_dirs(mailman_cg
>   
>   logging_search_logs(mailman_cgi_t)
>   
> +miscfiles_read_generic_certs(mailman_cgi_t)
>   miscfiles_read_localization(mailman_cgi_t)
>   
> -
>   optional_policy(`
>   	apache_sigchld(mailman_cgi_t)
>   	apache_use_fds(mailman_cgi_t)
> @@ -133,6 +160,15 @@ optional_policy(`
>   ')
>   
>   optional_policy(`
> +	cron_rw_inherited_tmp_files(mailman_cgi_t)
> +	cron_system_entry(mailman_cgi_t, mailman_cgi_exec_t)
> +')
> +
> +optional_policy(`
> +	mysql_stream_connect(mailman_cgi_t)
> +')
> +
> +optional_policy(`
>   	postfix_read_config(mailman_cgi_t)
>   ')
>   
> @@ -142,7 +178,9 @@ optional_policy(`
>   #
>   
>   allow mailman_mail_t self:capability { dac_override kill setgid setuid sys_tty_config };
> -allow mailman_mail_t self:process { signal signull setsched };
> +allow mailman_mail_t self:process { execmem signal signull setsched };

Any idea why the execmem is hit?


> +allow mailman_mail_t self:netlink_audit_socket { nlmsg_relay create_socket_perms };
> +allow mailman_mail_t self:fifo_file rw_file_perms;
>   
>   allow mailman_mail_t mailman_archive_t:dir manage_dir_perms;
>   allow mailman_mail_t mailman_archive_t:file manage_file_perms;
> @@ -167,8 +205,12 @@ manage_files_pattern(mailman_mail_t, mai
>   manage_dirs_pattern(mailman_mail_t, mailman_runtime_t, mailman_runtime_t)
>   files_runtime_filetrans(mailman_mail_t, mailman_runtime_t, { file dir })
>   
> +kernel_read_network_state(mailman_mail_t)
>   kernel_read_system_state(mailman_mail_t)
>   
> +corenet_tcp_bind_all_unreserved_ports(mailman_mail_t)
> +corenet_tcp_bind_generic_node(mailman_mail_t)
> +corenet_tcp_connect_http_port(mailman_mail_t)
>   corenet_tcp_connect_smtp_port(mailman_mail_t)
>   corenet_sendrecv_spamd_client_packets(mailman_mail_t)
>   corenet_sendrecv_innd_client_packets(mailman_mail_t)
> @@ -193,6 +235,7 @@ libs_read_lib_files(mailman_mail_t)
>   
>   logging_search_logs(mailman_mail_t)
>   
> +miscfiles_read_generic_certs(mailman_mail_t)
>   miscfiles_read_localization(mailman_mail_t)
>   
>   mta_use_mailserver_fds(mailman_mail_t)
> @@ -200,14 +243,26 @@ mta_dontaudit_rw_delivery_tcp_sockets(ma
>   mta_dontaudit_rw_queue(mailman_mail_t)
>   
>   optional_policy(`
> +	apache_search_config(mailman_mail_t)
> +')
> +
> +optional_policy(`
>   	courier_read_spool(mailman_mail_t)
>   ')
>   
>   optional_policy(`
>   	cron_read_pipes(mailman_mail_t)
> +	cron_rw_inherited_tmp_files(mailman_mail_t)
> +	cron_search_spool(mailman_mail_t)
> +	cron_system_entry(mailman_mail_t, mailman_mail_exec_t)
> +')
> +
> +optional_policy(`
> +	corenet_tcp_connect_mysqld_port(mailman_mail_t)
>   ')
>   
>   optional_policy(`
> +	postfix_read_config(mailman_mail_t)
>   	postfix_search_spool(mailman_mail_t)
>   	postfix_rw_inherited_master_pipes(mailman_mail_t)
>   ')
> @@ -217,15 +272,18 @@ optional_policy(`
>   # Queue local policy
>   #
>   
> -allow mailman_queue_t self:capability { setgid setuid };
> +allow mailman_queue_t self:capability { dac_override setgid setuid };
>   allow mailman_queue_t self:process { setsched signal_perms };
>   allow mailman_queue_t self:fifo_file rw_fifo_file_perms;
>   
> +allow mailman_queue_t mailman_runtime_t:dir rw_dir_perms;
> +allow mailman_queue_t mailman_runtime_t:file manage_file_perms;
> +
>   allow mailman_queue_t mailman_archive_t:dir manage_dir_perms;
>   allow mailman_queue_t mailman_archive_t:file manage_file_perms;
>   
>   allow mailman_queue_t mailman_data_t:dir rw_dir_perms;
> -allow mailman_queue_t mailman_data_t:file manage_file_perms;
> +allow mailman_queue_t mailman_data_t:file { map manage_file_perms };
>   allow mailman_queue_t mailman_data_t:lnk_file read_lnk_file_perms;
>   
>   allow mailman_queue_t mailman_lock_t:dir rw_dir_perms;
> @@ -234,15 +292,25 @@ allow mailman_queue_t mailman_lock_t:fil
>   allow mailman_queue_t mailman_log_t:dir list_dir_perms;
>   allow mailman_queue_t mailman_log_t:file manage_file_perms;
>   
> +fs_tmpfs_filetrans(mailman_queue_t, mailman_queue_tmpfs_t, file)
> +allow mailman_queue_t mailman_queue_tmpfs_t:file { map manage_file_perms };
> +
> +kernel_read_network_state(mailman_queue_t)
>   kernel_read_system_state(mailman_queue_t)
> +kernel_search_vm_sysctl(mailman_queue_t)
>   
>   auth_domtrans_chk_passwd(mailman_queue_t)
>   
>   corecmd_read_bin_files(mailman_queue_t)
>   corenet_sendrecv_innd_client_packets(mailman_queue_t)
> +corenet_tcp_bind_all_unreserved_ports(mailman_queue_t)
> +corenet_tcp_bind_generic_node(mailman_queue_t)
> +corenet_tcp_connect_generic_port(mailman_queue_t)
> +corenet_tcp_connect_http_port(mailman_queue_t)
>   corenet_tcp_connect_innd_port(mailman_queue_t)
>   
>   files_dontaudit_search_runtime(mailman_queue_t)
> +files_read_usr_files(mailman_queue_t)
>   files_search_locks(mailman_queue_t)
>   
>   miscfiles_read_localization(mailman_queue_t)
> @@ -251,14 +319,24 @@ seutil_dontaudit_search_config(mailman_q
>   
>   userdom_search_user_home_dirs(mailman_queue_t)
>   
> -cron_rw_tmp_files(mailman_queue_t)
> -
>   optional_policy(`
>   	apache_read_config(mailman_queue_t)
>   ')
>   
>   optional_policy(`
> +	cron_rw_tmp_files(mailman_queue_t)
> +	cron_search_spool(mailman_queue_t)
>   	cron_system_entry(mailman_queue_t, mailman_queue_exec_t)
> +	cron_use_fds(mailman_queue_t)
> +')
> +
> +optional_policy(`
> +	mysql_stream_connect(mailman_queue_t)
> +	mysql_tcp_connect(mailman_queue_t)
> +')
> +
> +optional_policy(`
> +	postfix_read_config(mailman_queue_t)
>   ')
>   
>   optional_policy(`
> Index: refpolicy-2.20220219/policy/modules/services/apache.te
> ===================================================================
> --- refpolicy-2.20220219.orig/policy/modules/services/apache.te
> +++ refpolicy-2.20220219/policy/modules/services/apache.te
> @@ -815,8 +815,10 @@ optional_policy(`
>   ')
>   
>   optional_policy(`
> +	mailman_stream_connect_cgi(httpd_t)
>   	mailman_signal_cgi(httpd_t)
>   	mailman_domtrans_cgi(httpd_t)
> +	mailman_map_data_files(httpd_t)
>   	mailman_read_data_files(httpd_t)
>   	mailman_search_data(httpd_t)
>   	mailman_read_archive(httpd_t)
> Index: refpolicy-2.20220219/policy/modules/services/cron.te
> ===================================================================
> --- refpolicy-2.20220219.orig/policy/modules/services/cron.te
> +++ refpolicy-2.20220219/policy/modules/services/cron.te
> @@ -604,6 +604,12 @@ optional_policy(`
>   ')
>   
>   optional_policy(`
> +	mailman_domtrans_queue(system_cronjob_t)
> +	# for flock
> +	mailman_manage_runtime_files(system_cronjob_t)
> +')
> +
> +optional_policy(`
>   	mrtg_append_create_logs(system_cronjob_t)
>   	mrtg_read_config(system_cronjob_t)
>   ')
> Index: refpolicy-2.20220219/policy/modules/system/systemd.te
> ===================================================================
> --- refpolicy-2.20220219.orig/policy/modules/system/systemd.te
> +++ refpolicy-2.20220219/policy/modules/system/systemd.te
> @@ -1796,6 +1796,10 @@ optional_policy(`
>   ')
>   
>   optional_policy(`
> +	mailman_manage_lockdir(systemd_tmpfiles_t)

There should be a systemd_tmpfilesd_managed(mailman_lock_t) in mailman.te instead.


> +')
> +
> +optional_policy(`
>   	xfs_create_tmp_dirs(systemd_tmpfiles_t)
>   ')
>   
> Index: refpolicy-2.20220219/policy/modules/services/mailman.fc
> ===================================================================
> --- refpolicy-2.20220219.orig/policy/modules/services/mailman.fc
> +++ refpolicy-2.20220219/policy/modules/services/mailman.fc
> @@ -20,6 +20,7 @@
>   
>   /usr/lib/cgi-bin/mailman/.*	--	gen_context(system_u:object_r:mailman_cgi_exec_t,s0)
>   /usr/lib/mailman/bin/qrunner	--	gen_context(system_u:object_r:mailman_queue_exec_t,s0)
> +/usr/lib/mailman3/bin/.*	--	gen_context(system_u:object_r:mailman_queue_exec_t,s0)
>   /usr/lib/mailman/cgi-bin/.*	--	gen_context(system_u:object_r:mailman_cgi_exec_t,s0)
>   /usr/lib/mailman/mail/mailman	--	gen_context(system_u:object_r:mailman_mail_exec_t,s0)
>   /usr/lib/mailman/mail/wrapper	--	gen_context(system_u:object_r:mailman_mail_exec_t,s0)
> @@ -28,3 +29,4 @@
>   /usr/mailman/mail/wrapper	--	gen_context(system_u:object_r:mailman_mail_exec_t,s0)
>   
>   /usr/share/doc/mailman/mm-handler.*	--	gen_context(system_u:object_r:mailman_mail_exec_t,s0)
> +/usr/share/mailman3-web/manage.py --	gen_context(system_u:object_r:mailman_queue_exec_t,s0)


-- 
Chris PeBenito