From 5b564f3b243368edd0e083c78a99b059a10e80ed Mon Sep 17 00:00:00 2001 From: Russell Coker Date: Fri, 18 Feb 2022 12:21:52 +1100 Subject: matrixd-synapse policy V3 Here's the latest version of the matrixd-synapse policy including all the suggestions from a year ago. Probably ready to merge. Signed-off-by: Russell Coker Signed-off-by: Jason Zaman --- policy/modules/kernel/corenetwork.te.in | 2 +- policy/modules/services/matrixd.fc | 4 + policy/modules/services/matrixd.if | 1 + policy/modules/services/matrixd.te | 126 ++++++++++++++++++++++++++++++++ 4 files changed, 132 insertions(+), 1 deletion(-) create mode 100644 policy/modules/services/matrixd.fc create mode 100644 policy/modules/services/matrixd.if create mode 100644 policy/modules/services/matrixd.te diff --git a/policy/modules/kernel/corenetwork.te.in b/policy/modules/kernel/corenetwork.te.in index 547328be..077aacf0 100644 --- a/policy/modules/kernel/corenetwork.te.in +++ b/policy/modules/kernel/corenetwork.te.in @@ -156,7 +156,7 @@ network_port(hadoop_namenode, tcp,8020,s0) network_port(hddtemp, tcp,7634,s0) network_port(howl, tcp,5335,s0, udp,5353,s0) network_port(hplip, tcp,1782,s0, tcp,2207,s0, tcp,2208,s0, tcp, 8290,s0, tcp,50000,s0, tcp,50002,s0, tcp,8292,s0, tcp,9100,s0, tcp,9101,s0, tcp,9102,s0, tcp,9220,s0, tcp,9221,s0, tcp,9222,s0, tcp,9280,s0, tcp,9281,s0, tcp,9282,s0, tcp,9290,s0, tcp,9291,s0) -network_port(http, tcp,80,s0, tcp,443,s0, tcp,488,s0, tcp,8008,s0, tcp,8009,s0, tcp,8443,s0) #8443 is mod_nss default port +network_port(http, tcp,80,s0, tcp,443,s0, tcp,488,s0, tcp,8008,s0, tcp,8009,s0, tcp,8443,s0, tcp,8448,s0) #8443 is mod_nss default port network_port(http_cache, tcp,3128,s0, udp,3130,s0, tcp,8080,s0, tcp,8118,s0, tcp,10001-10010,s0) # 8118 is for privoxy network_port(i18n_input, tcp,9010,s0) network_port(imaze, tcp,5323,s0, udp,5323,s0) diff --git a/policy/modules/services/matrixd.fc b/policy/modules/services/matrixd.fc new file mode 100644 index 00000000..b59b1c75 --- /dev/null +++ b/policy/modules/services/matrixd.fc @@ -0,0 +1,4 @@ +/var/lib/matrix-synapse(/.*)? gen_context(system_u:object_r:matrixd_var_t,s0) +/var/log/matrix-synapse(/.*)? gen_context(system_u:object_r:matrixd_log_t,s0) +/etc/matrix-synapse(/.*)? gen_context(system_u:object_r:matrixd_conf_t,s0) +/usr/bin/synctl -- gen_context(system_u:object_r:matrixd_exec_t,s0) diff --git a/policy/modules/services/matrixd.if b/policy/modules/services/matrixd.if new file mode 100644 index 00000000..f1eff5f0 --- /dev/null +++ b/policy/modules/services/matrixd.if @@ -0,0 +1 @@ +## Matrixd diff --git a/policy/modules/services/matrixd.te b/policy/modules/services/matrixd.te new file mode 100644 index 00000000..5c217678 --- /dev/null +++ b/policy/modules/services/matrixd.te @@ -0,0 +1,126 @@ +policy_module(matrixd, 1.0.0) + +######################################## +# +# Declarations +# + +## +##

+## Determine whether Matrixd is allowed to federate +## (bind all UDP ports and connect to all TCP ports). +##

+## +gen_tunable(matrix_allow_federation, true) + +## +##

+## Determine whether Matrixd can connect to the Postgres database. +##

+## +gen_tunable(matrix_postgresql_connect, false) + + +type matrixd_t; +type matrixd_exec_t; +init_daemon_domain(matrixd_t, matrixd_exec_t) + +type matrixd_var_t; +files_type(matrixd_var_t) + +type matrixd_log_t; +logging_log_file(matrixd_log_t) + +type matrixd_conf_t; +files_config_file(matrixd_conf_t) + +type matrixd_tmp_t; +files_tmp_file(matrixd_tmp_t) + +######################################## +# +# Local policy +# + +allow matrixd_t self:fifo_file rw_file_perms; +allow matrixd_t self:tcp_socket create_stream_socket_perms; +allow matrixd_t self:netlink_route_socket r_netlink_socket_perms; + +allow matrixd_t self:udp_socket create_socket_perms; +allow matrixd_t self:unix_dgram_socket create_socket_perms; +# execmem is needed for Python callbacks +# https://cffi.readthedocs.io/en/latest/using.html#callbacks +allow matrixd_t self:process execmem; + +allow matrixd_t matrixd_tmp_t:file { manage_file_perms map }; +files_tmp_filetrans(matrixd_t, matrixd_tmp_t, file) +fs_tmpfs_filetrans(matrixd_t, matrixd_tmp_t, file) + +manage_files_pattern(matrixd_t, matrixd_var_t, matrixd_var_t) +files_search_var_lib(matrixd_t) +allow matrixd_t matrixd_var_t:file map; +allow matrixd_t matrixd_var_t:dir manage_dir_perms; + +logging_search_logs(matrixd_t) +manage_files_pattern(matrixd_t, matrixd_log_t, matrixd_log_t) + +read_files_pattern(matrixd_t, matrixd_conf_t, matrixd_conf_t) +allow matrixd_t matrixd_conf_t:dir list_dir_perms; + +kernel_read_system_state(matrixd_t) +kernel_read_vm_overcommit_sysctl(matrixd_t) + +# The following in the systemd service file causes a domain transition when +# running python3: +# SELinuxContext=system_u:system_r:matrixd_t:s0 +corecmd_bin_entry_type(matrixd_t) +corecmd_exec_bin(matrixd_t) +corecmd_exec_shell(matrixd_t) + +corenet_tcp_bind_generic_node(matrixd_t) +corenet_tcp_bind_http_port(matrixd_t) +corenet_tcp_connect_http_cache_port(matrixd_t) +corenet_tcp_connect_http_port(matrixd_t) + +corenet_udp_bind_generic_node(matrixd_t) +corenet_udp_bind_generic_port(matrixd_t) +corenet_udp_bind_reserved_port(matrixd_t) + +dev_read_urand(matrixd_t) + +files_read_etc_files(matrixd_t) +files_read_etc_runtime_files(matrixd_t) +files_read_etc_symlinks(matrixd_t) + +# for /usr/share/ca-certificates +files_read_usr_files(matrixd_t) + +init_search_runtime(matrixd_t) +logging_send_syslog_msg(matrixd_t) + +miscfiles_read_generic_tls_privkey(matrixd_t) +miscfiles_read_generic_certs(matrixd_t) +miscfiles_read_localization(matrixd_t) + +sysnet_read_config(matrixd_t) + +userdom_search_user_runtime_root(matrixd_t) + +optional_policy(` + apache_search_config(matrixd_t) +') + +tunable_policy(`matrix_allow_federation',` + corenet_tcp_connect_all_unreserved_ports(matrixd_t) + corenet_tcp_connect_generic_port(matrixd_t) + corenet_udp_bind_all_ports(matrixd_t) +', ` + corenet_dontaudit_tcp_connect_all_ports(matrixd_t) + corenet_dontaudit_udp_bind_all_ports(matrixd_t) +') + +tunable_policy(`matrix_postgresql_connect',` + postgresql_stream_connect(matrixd_t) + postgresql_tcp_connect(matrixd_t) +') + -- cgit v1.2.3-65-gdbad