2791589f9e
The display manager lightdm (and I think gdm) start a dbus binary.
v3 - Updated based on feedback
type=AVC msg=audit(1544626796.378:201): avc: denied { execute } for pid=9973 comm="dbus-launch" name="dbus-daemon" dev="dm-1" ino=6695040 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:dbusd_exec_t:s0 tclass=file permissive=1
type=AVC msg=audit(1544626796.378:201): avc: denied { read open } for pid=9973 comm="dbus-launch" path="/usr/bin/dbus-daemon" dev="dm-1" ino=6695040 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:dbusd_exec_t:s0 tclass=file permissive=1
type=AVC msg=audit(1544626796.378:201): avc: denied { execute_no_trans } for pid=9973 comm="dbus-launch" path="/usr/bin/dbus-daemon" dev="dm-1" ino=6695040 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:dbusd_exec_t:s0 tclass=file permissive=1
type=AVC msg=audit(1544626796.378:201): avc: denied { map } for pid=9973 comm="dbus-daemon" path="/usr/bin/dbus-daemon" dev="dm-1" ino=6695040 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:dbusd_exec_t:s0 tclass=file permissive=1
type=AVC msg=audit(1546551459.112:208): avc: denied { getcap } for pid=6275 comm="dbus-daemon" scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tclass=process permissive=1
type=AVC msg=audit(1546551459.116:209): avc: denied { read } for pid=6275 comm="dbus-daemon" name="995" dev="tmpfs" ino=35210 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:systemd_logind_var_run_t:s0 tclass=file permissive=1
type=AVC msg=audit(1546551459.116:209): avc: denied { open } for pid=6275 comm="dbus-daemon" path="/run/systemd/users/995" dev="tmpfs" ino=35210 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:systemd_logind_var_run_t:s0 tclass=file permissive=1
type=AVC msg=audit(1546551459.116:210): avc: denied { getattr } for pid=6275 comm="dbus-daemon" path="/run/systemd/users/995" dev="tmpfs" ino=35210 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:systemd_logind_var_run_t:s0 tclass=file permissive=1
Signed-off-by: Dave Sugar <dsugar@tresys.com>
596 lines
12 KiB
Plaintext
596 lines
12 KiB
Plaintext
## <summary>Desktop messaging bus.</summary>
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########################################
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## <summary>
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## DBUS stub interface. No access allowed.
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## </summary>
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## <param name="domain" unused="true">
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## <summary>
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## Domain allowed access
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## </summary>
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## </param>
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#
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interface(`dbus_stub',`
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gen_require(`
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type system_dbusd_t;
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class dbus all_dbus_perms;
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')
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')
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########################################
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## <summary>
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## Execute dbus in the caller domain.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_exec',`
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gen_require(`
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type dbusd_exec_t;
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')
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corecmd_search_bin($1)
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can_exec($1, dbusd_exec_t)
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')
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########################################
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## <summary>
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## Role access for dbus.
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## </summary>
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## <param name="role_prefix">
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## <summary>
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## The prefix of the user role (e.g., user
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## is the prefix for user_r).
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## </summary>
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## </param>
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## <param name="role">
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## <summary>
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## Role allowed access
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## </summary>
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## </param>
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## <param name="domain">
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## <summary>
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## User domain for the role
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## </summary>
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## </param>
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#
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template(`dbus_role_template',`
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gen_require(`
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class dbus { send_msg acquire_svc };
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attribute session_bus_type;
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type system_dbusd_t, dbusd_exec_t;
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type session_dbusd_tmp_t, session_dbusd_home_t;
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')
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##############################
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#
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# Declarations
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#
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type $1_dbusd_t, session_bus_type;
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domain_type($1_dbusd_t)
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domain_entry_file($1_dbusd_t, dbusd_exec_t)
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ubac_constrained($1_dbusd_t)
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role $2 types $1_dbusd_t;
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##############################
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#
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# Local policy
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#
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allow $3 $1_dbusd_t:unix_stream_socket connectto;
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allow $3 $1_dbusd_t:dbus { send_msg acquire_svc };
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allow $3 $1_dbusd_t:fd use;
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allow $3 system_dbusd_t:dbus { send_msg acquire_svc };
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allow $3 { session_dbusd_home_t session_dbusd_tmp_t }:dir { manage_dir_perms relabel_dir_perms };
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allow $3 { session_dbusd_home_t session_dbusd_tmp_t }:file { manage_file_perms relabel_file_perms };
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userdom_user_home_dir_filetrans($3, session_dbusd_home_t, dir, ".dbus")
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domtrans_pattern($3, dbusd_exec_t, $1_dbusd_t)
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ps_process_pattern($3, $1_dbusd_t)
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allow $3 $1_dbusd_t:process { ptrace signal_perms };
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allow $1_dbusd_t $3:process sigkill;
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corecmd_bin_domtrans($1_dbusd_t, $3)
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corecmd_shell_domtrans($1_dbusd_t, $3)
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auth_use_nsswitch($1_dbusd_t)
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ifdef(`hide_broken_symptoms',`
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dontaudit $3 $1_dbusd_t:netlink_selinux_socket { read write };
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')
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optional_policy(`
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systemd_read_logind_pids($1_dbusd_t)
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')
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')
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#######################################
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## <summary>
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## Template for creating connections to
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## the system bus.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_system_bus_client',`
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gen_require(`
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attribute dbusd_system_bus_client;
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type system_dbusd_t, system_dbusd_var_run_t, system_dbusd_var_lib_t;
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class dbus send_msg;
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')
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typeattribute $1 dbusd_system_bus_client;
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allow $1 { system_dbusd_t self }:dbus send_msg;
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allow system_dbusd_t $1:dbus send_msg;
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files_search_var_lib($1)
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read_files_pattern($1, system_dbusd_var_lib_t, system_dbusd_var_lib_t)
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files_search_pids($1)
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stream_connect_pattern($1, system_dbusd_var_run_t, system_dbusd_var_run_t, system_dbusd_t)
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dbus_read_config($1)
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')
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#######################################
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## <summary>
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## Acquire service on all DBUS
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## session busses.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_connect_all_session_bus',`
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gen_require(`
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attribute session_bus_type;
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class dbus acquire_svc;
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')
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allow $1 session_bus_type:dbus acquire_svc;
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')
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#######################################
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## <summary>
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## Acquire service on specified
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## DBUS session bus.
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## </summary>
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## <param name="role_prefix">
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## <summary>
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## The prefix of the user role (e.g., user
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## is the prefix for user_r).
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## </summary>
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## </param>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_connect_spec_session_bus',`
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gen_require(`
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type $1_dbusd_t;
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class dbus acquire_svc;
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')
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allow $2 $1_dbusd_t:dbus acquire_svc;
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')
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#######################################
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## <summary>
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## Creating connections to all
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## DBUS session busses.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_all_session_bus_client',`
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gen_require(`
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attribute session_bus_type, dbusd_session_bus_client;
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class dbus send_msg;
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')
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typeattribute $1 dbusd_session_bus_client;
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allow $1 { session_bus_type self }:dbus send_msg;
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allow session_bus_type $1:dbus send_msg;
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allow $1 session_bus_type:unix_stream_socket connectto;
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allow $1 session_bus_type:fd use;
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')
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#######################################
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## <summary>
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## Creating connections to specified
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## DBUS session bus.
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## </summary>
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## <param name="role_prefix">
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## <summary>
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## The prefix of the user role (e.g., user
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## is the prefix for user_r).
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## </summary>
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## </param>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_spec_session_bus_client',`
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gen_require(`
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attribute dbusd_session_bus_client;
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type $1_dbusd_t;
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class dbus send_msg;
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')
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typeattribute $2 dbusd_session_bus_client;
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allow $2 { $1_dbusd_t self }:dbus send_msg;
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allow $1_dbusd_t $2:dbus send_msg;
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allow $2 $1_dbusd_t:unix_stream_socket connectto;
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allow $2 $1_dbusd_t:fd use;
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')
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#######################################
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## <summary>
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## Send messages to all DBUS
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## session busses.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_send_all_session_bus',`
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gen_require(`
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attribute session_bus_type;
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class dbus send_msg;
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')
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allow $1 session_bus_type:dbus send_msg;
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')
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#######################################
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## <summary>
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## Send messages to specified
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## DBUS session busses.
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## </summary>
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## <param name="role_prefix">
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## <summary>
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## The prefix of the user role (e.g., user
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## is the prefix for user_r).
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## </summary>
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## </param>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_send_spec_session_bus',`
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gen_require(`
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type $1_dbusd_t;
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class dbus send_msg;
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')
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allow $2 $1_dbusd_t:dbus send_msg;
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')
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########################################
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## <summary>
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## Read dbus configuration content.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_read_config',`
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gen_require(`
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type dbusd_etc_t;
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')
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allow $1 dbusd_etc_t:dir list_dir_perms;
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allow $1 dbusd_etc_t:file read_file_perms;
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')
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########################################
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## <summary>
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## Read system dbus lib files.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_read_lib_files',`
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gen_require(`
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type system_dbusd_var_lib_t;
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')
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files_search_var_lib($1)
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read_files_pattern($1, system_dbusd_var_lib_t, system_dbusd_var_lib_t)
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read_lnk_files_pattern($1, system_dbusd_var_lib_t, system_dbusd_var_lib_t)
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')
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########################################
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## <summary>
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## Relabel system dbus lib directory.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_relabel_lib_dirs',`
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gen_require(`
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type system_dbusd_var_lib_t;
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')
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files_search_var_lib($1)
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allow $1 system_dbusd_var_lib_t:dir { relabelfrom relabelto };
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')
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########################################
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## <summary>
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## Create, read, write, and delete
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## system dbus lib files.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_manage_lib_files',`
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gen_require(`
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type system_dbusd_var_lib_t;
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')
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files_search_var_lib($1)
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manage_files_pattern($1, system_dbusd_var_lib_t, system_dbusd_var_lib_t)
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')
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########################################
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## <summary>
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## Allow a application domain to be
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## started by the specified session bus.
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## </summary>
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## <param name="domain">
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## <summary>
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## Type to be used as a domain.
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## </summary>
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## </param>
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## <param name="entry_point">
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## <summary>
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## Type of the program to be used as an
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## entry point to this domain.
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## </summary>
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## </param>
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#
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interface(`dbus_all_session_domain',`
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gen_require(`
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attribute session_bus_type;
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')
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domtrans_pattern(session_bus_type, $2, $1)
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dbus_all_session_bus_client($1)
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dbus_connect_all_session_bus($1)
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')
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########################################
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## <summary>
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## Allow a application domain to be
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## started by the specified session bus.
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## </summary>
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## <param name="role_prefix">
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## <summary>
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## The prefix of the user role (e.g., user
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## is the prefix for user_r).
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## </summary>
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## </param>
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## <param name="domain">
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## <summary>
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## Type to be used as a domain.
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## </summary>
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## </param>
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## <param name="entry_point">
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## <summary>
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## Type of the program to be used as an
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## entry point to this domain.
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## </summary>
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## </param>
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#
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interface(`dbus_spec_session_domain',`
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gen_require(`
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type $1_dbusd_t;
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')
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domtrans_pattern($1_dbusd_t, $3, $2)
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dbus_spec_session_bus_client($1, $2)
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dbus_connect_spec_session_bus($1, $2)
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')
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########################################
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## <summary>
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## Acquire service on the DBUS system bus.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_connect_system_bus',`
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gen_require(`
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type system_dbusd_t;
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class dbus acquire_svc;
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')
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allow $1 system_dbusd_t:dbus acquire_svc;
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')
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########################################
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## <summary>
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## Send messages to the DBUS system bus.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_send_system_bus',`
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gen_require(`
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type system_dbusd_t;
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class dbus send_msg;
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')
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allow $1 system_dbusd_t:dbus send_msg;
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')
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########################################
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## <summary>
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## Unconfined access to DBUS system bus.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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interface(`dbus_system_bus_unconfined',`
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gen_require(`
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type system_dbusd_t;
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class dbus { acquire_svc send_msg };
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')
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allow $1 system_dbusd_t:dbus { acquire_svc send_msg };
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')
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########################################
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## <summary>
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## Create a domain for processes which
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## can be started by the DBUS system bus.
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## </summary>
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## <param name="domain">
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## <summary>
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## Type to be used as a domain.
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## </summary>
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## </param>
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## <param name="entry_point">
|
|
## <summary>
|
|
## Type of the program to be used as an entry point to this domain.
|
|
## </summary>
|
|
## </param>
|
|
#
|
|
interface(`dbus_system_domain',`
|
|
gen_require(`
|
|
type system_dbusd_t;
|
|
role system_r;
|
|
')
|
|
|
|
domain_type($1)
|
|
domain_entry_file($1, $2)
|
|
|
|
role system_r types $1;
|
|
|
|
domtrans_pattern(system_dbusd_t, $2, $1)
|
|
|
|
dbus_system_bus_client($1)
|
|
dbus_connect_system_bus($1)
|
|
|
|
ps_process_pattern(system_dbusd_t, $1)
|
|
|
|
userdom_read_all_users_state($1)
|
|
|
|
ifdef(`init_systemd',`
|
|
init_daemon_domain($1, $2)
|
|
')
|
|
|
|
ifdef(`hide_broken_symptoms', `
|
|
dontaudit $1 system_dbusd_t:netlink_selinux_socket { read write };
|
|
')
|
|
')
|
|
|
|
########################################
|
|
## <summary>
|
|
## Use and inherit DBUS system bus
|
|
## file descriptors.
|
|
## </summary>
|
|
## <param name="domain">
|
|
## <summary>
|
|
## Domain allowed access.
|
|
## </summary>
|
|
## </param>
|
|
#
|
|
interface(`dbus_use_system_bus_fds',`
|
|
gen_require(`
|
|
type system_dbusd_t;
|
|
')
|
|
|
|
allow $1 system_dbusd_t:fd use;
|
|
')
|
|
|
|
########################################
|
|
## <summary>
|
|
## Do not audit attempts to read and
|
|
## write DBUS system bus TCP sockets.
|
|
## </summary>
|
|
## <param name="domain">
|
|
## <summary>
|
|
## Domain to not audit.
|
|
## </summary>
|
|
## </param>
|
|
#
|
|
interface(`dbus_dontaudit_system_bus_rw_tcp_sockets',`
|
|
gen_require(`
|
|
type system_dbusd_t;
|
|
')
|
|
|
|
dontaudit $1 system_dbusd_t:tcp_socket { read write };
|
|
')
|
|
|
|
########################################
|
|
## <summary>
|
|
## Unconfined access to DBUS.
|
|
## </summary>
|
|
## <param name="domain">
|
|
## <summary>
|
|
## Domain allowed access.
|
|
## </summary>
|
|
## </param>
|
|
#
|
|
interface(`dbus_unconfined',`
|
|
gen_require(`
|
|
attribute dbusd_unconfined;
|
|
')
|
|
|
|
typeattribute $1 dbusd_unconfined;
|
|
')
|