selinux-policy/policy/modules/services/kerberos.if

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## <summary>MIT Kerberos admin and KDC</summary>
## <desc>
## <p>
## This policy supports:
## </p>
## <p>
## Servers:
## <ul>
## <li>kadmind</li>
## <li>krb5kdc</li>
## </ul>
## </p>
## <p>
## Clients:
## <ul>
## <li>kinit</li>
## <li>kdestroy</li>
## <li>klist</li>
## <li>ksu (incomplete)</li>
## </ul>
## </p>
## </desc>
########################################
## <summary>
## Execute kadmind in the current domain
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`kerberos_exec_kadmind',`
gen_require(`
type kadmind_exec_t;
')
can_exec($1, kadmind_exec_t)
')
########################################
## <summary>
## Execute a domain transition to run kpropd.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed to transition.
## </summary>
## </param>
#
interface(`kerberos_domtrans_kpropd',`
gen_require(`
type kpropd_t, kpropd_exec_t;
')
domtrans_pattern($1, kpropd_exec_t, kpropd_t)
')
########################################
## <summary>
## Use kerberos services
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`kerberos_use',`
gen_require(`
type krb5_conf_t, krb5kdc_conf_t;
')
files_search_etc($1)
allow $1 krb5_conf_t:file read_file_perms;
dontaudit $1 krb5_conf_t:file write;
dontaudit $1 krb5kdc_conf_t:dir list_dir_perms;
dontaudit $1 krb5kdc_conf_t:file rw_file_perms;
#kerberos libraries are attempting to set the correct file context
dontaudit $1 self:process setfscreate;
selinux_dontaudit_validate_context($1)
seutil_dontaudit_read_file_contexts($1)
tunable_policy(`allow_kerberos',`
allow $1 self:tcp_socket create_socket_perms;
allow $1 self:udp_socket create_socket_perms;
corenet_all_recvfrom_unlabeled($1)
corenet_all_recvfrom_netlabel($1)
corenet_tcp_sendrecv_all_if($1)
corenet_udp_sendrecv_all_if($1)
corenet_tcp_sendrecv_all_nodes($1)
corenet_udp_sendrecv_all_nodes($1)
corenet_tcp_sendrecv_kerberos_port($1)
corenet_udp_sendrecv_kerberos_port($1)
corenet_tcp_bind_all_nodes($1)
corenet_udp_bind_all_nodes($1)
corenet_tcp_connect_kerberos_port($1)
corenet_tcp_connect_ocsp_port($1)
corenet_sendrecv_kerberos_client_packets($1)
corenet_sendrecv_ocsp_client_packets($1)
')
optional_policy(`
tunable_policy(`allow_kerberos',`
pcscd_stream_connect($1)
')
')
')
########################################
## <summary>
## Read the kerberos configuration file (/etc/krb5.conf).
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <rolecap/>
#
interface(`kerberos_read_config',`
gen_require(`
type krb5_conf_t;
')
files_search_etc($1)
allow $1 krb5_conf_t:file read_file_perms;
')
########################################
## <summary>
## Do not audit attempts to write the kerberos
## configuration file (/etc/krb5.conf).
## </summary>
## <param name="domain">
## <summary>
## Domain to not audit.
## </summary>
## </param>
#
interface(`kerberos_dontaudit_write_config',`
gen_require(`
type krb5_conf_t;
')
dontaudit $1 krb5_conf_t:file write;
')
########################################
## <summary>
## Read and write the kerberos configuration file (/etc/krb5.conf).
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <rolecap/>
#
interface(`kerberos_rw_config',`
gen_require(`
type krb5_conf_t;
')
files_search_etc($1)
allow $1 krb5_conf_t:file rw_file_perms;
')
########################################
## <summary>
## Read the kerberos key table.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <rolecap/>
#
interface(`kerberos_read_keytab',`
gen_require(`
type krb5_keytab_t;
')
files_search_etc($1)
allow $1 krb5_keytab_t:file read_file_perms;
')
########################################
## <summary>
## Create a derived type for kerberos keytab
## </summary>
## <param name="prefix">
## <summary>
## The prefix to be used for deriving type names.
## </summary>
## </param>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
template(`kerberos_keytab_template',`
type $1_keytab_t;
files_type($1_keytab_t)
allow $2 $1_keytab_t:file read_file_perms;
kerberos_read_keytab($2)
kerberos_use($2)
')
########################################
## <summary>
## Read the kerberos kdc configuration file (/etc/krb5kdc.conf).
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <rolecap/>
#
interface(`kerberos_read_kdc_config',`
gen_require(`
type krb5kdc_conf_t;
')
files_search_etc($1)
read_files_pattern($1, krb5kdc_conf_t, krb5kdc_conf_t)
')
########################################
## <summary>
## Read the kerberos kdc configuration file (/etc/krb5kdc.conf).
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <rolecap/>
#
interface(`kerberos_manage_host_rcache',`
gen_require(`
type krb5_host_rcache_t;
')
# creates files as system_u no matter what the selinux user
# cjp: should be in the below tunable but typeattribute
# does not work in conditionals
domain_obj_id_change_exemption($1)
tunable_policy(`allow_kerberos',`
allow $1 self:process setfscreate;
selinux_validate_context($1)
seutil_read_file_contexts($1)
allow $1 krb5_host_rcache_t:file manage_file_perms;
files_search_tmp($1)
')
')
########################################
## <summary>
## Connect to krb524 service
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`kerberos_connect_524',`
tunable_policy(`allow_kerberos',`
allow $1 self:udp_socket create_socket_perms;
corenet_all_recvfrom_unlabeled($1)
corenet_udp_sendrecv_generic_if($1)
corenet_udp_sendrecv_all_nodes($1)
corenet_udp_sendrecv_kerberos_master_port($1)
corenet_sendrecv_kerberos_master_client_packets($1)
')
')
########################################
## <summary>
## All of the rules required to administrate
## an kerberos environment
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <param name="role">
## <summary>
## The role to be allowed to manage the kerberos domain.
## </summary>
## </param>
## <rolecap/>
#
interface(`kerberos_admin',`
gen_require(`
type kadmind_t, krb5kdc_t, kerberos_initrc_exec_t;
type kadmind_log_t, kadmind_tmp_t, kadmind_var_run_t;
type krb5_conf_t, krb5_keytab_t, krb5kdc_conf_t;
type krb5kdc_principal_t, krb5kdc_tmp_t;
type krb5kdc_var_run_t, krb5_host_rcache_t;
type kpropd_t;
')
allow $1 kadmind_t:process { ptrace signal_perms };
ps_process_pattern($1, kadmind_t)
allow $1 krb5kdc_t:process { ptrace signal_perms };
ps_process_pattern($1, krb5kdc_t)
allow $1 kpropd_t:process { ptrace signal_perms };
ps_process_pattern($1, kpropd_t)
init_labeled_script_domtrans($1, kerberos_initrc_exec_t)
domain_system_change_exemption($1)
role_transition $2 kerberos_initrc_exec_t system_r;
allow $2 system_r;
logging_list_logs($1)
admin_pattern($1, kadmind_log_t)
files_list_tmp($1)
admin_pattern($1, kadmind_tmp_t)
files_list_pids($1)
admin_pattern($1, kadmind_var_run_t)
admin_pattern($1, krb5_conf_t)
admin_pattern($1, krb5_host_rcache_t)
admin_pattern($1, krb5_keytab_t)
admin_pattern($1, krb5kdc_principal_t)
admin_pattern($1, krb5kdc_tmp_t)
admin_pattern($1, krb5kdc_var_run_t)
')