selinux-refpolicy/policy/modules/services/snmp.if
Stephen Smalley 161bda392e access_vectors: Remove unused permissions
Remove unused permission definitions from SELinux.
Many of these were only ever used in pre-mainline
versions of SELinux, prior to Linux 2.6.0.  Some of them
were used in the legacy network or compat_net=1 checks
that were disabled by default in Linux 2.6.18 and
fully removed in Linux 2.6.30.

The corresponding classmap declarations were removed from the
mainline kernel in:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=42a9699a9fa179c0054ea3cf5ad3cc67104a6162

Permissions never used in mainline Linux:
file swapon
filesystem transition
tcp_socket { connectto newconn acceptfrom }
node enforce_dest
unix_stream_socket { newconn acceptfrom }

Legacy network checks, removed in 2.6.30:
socket { recv_msg send_msg }
node { tcp_recv tcp_send udp_recv udp_send rawip_recv rawip_send dccp_recv dccp_send }
netif { tcp_recv tcp_send udp_recv udp_send rawip_recv rawip_send dccp_recv dccp_send }

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2020-01-14 13:41:50 -05:00

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## <summary>Simple network management protocol services.</summary>
########################################
## <summary>
## Connect to snmpd with a unix
## domain stream socket.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`snmp_stream_connect',`
gen_require(`
type snmpd_t, snmpd_var_lib_t;
')
files_search_var_lib($1)
stream_connect_pattern($1, snmpd_var_lib_t, snmpd_var_lib_t, snmpd_t)
')
########################################
## <summary>
## Connect to snmp over the TCP network.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`snmp_tcp_connect',`
gen_require(`
type snmpd_t;
')
corenet_tcp_recvfrom_labeled($1, snmpd_t)
corenet_tcp_connect_snmp_port($1)
corenet_sendrecv_snmp_client_packets($1)
')
########################################
## <summary>
## Create, read, write, and delete
## snmp lib directories.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`snmp_manage_var_lib_dirs',`
gen_require(`
type snmpd_var_lib_t;
')
files_search_var_lib($1)
allow $1 snmpd_var_lib_t:dir manage_dir_perms;
')
########################################
## <summary>
## Create, read, write, and delete
## snmp lib files.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`snmp_manage_var_lib_files',`
gen_require(`
type snmpd_var_lib_t;
')
files_search_var_lib($1)
allow $1 snmpd_var_lib_t:dir list_dir_perms;
manage_files_pattern($1, snmpd_var_lib_t, snmpd_var_lib_t)
')
########################################
## <summary>
## Read snmpd lib content.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`snmp_read_snmp_var_lib_files',`
gen_require(`
type snmpd_var_lib_t;
')
allow $1 snmpd_var_lib_t:dir list_dir_perms;
read_files_pattern($1, snmpd_var_lib_t, snmpd_var_lib_t)
read_lnk_files_pattern($1, snmpd_var_lib_t, snmpd_var_lib_t)
')
########################################
## <summary>
## Do not audit attempts to read
## snmpd lib content.
## </summary>
## <param name="domain">
## <summary>
## Domain to not audit.
## </summary>
## </param>
#
interface(`snmp_dontaudit_read_snmp_var_lib_files',`
gen_require(`
type snmpd_var_lib_t;
')
dontaudit $1 snmpd_var_lib_t:dir list_dir_perms;
dontaudit $1 snmpd_var_lib_t:file read_file_perms;
dontaudit $1 snmpd_var_lib_t:lnk_file read_lnk_file_perms;
')
########################################
## <summary>
## Do not audit attempts to write
## snmpd lib files.
## </summary>
## <param name="domain">
## <summary>
## Domain to not audit.
## </summary>
## </param>
#
interface(`snmp_dontaudit_write_snmp_var_lib_files',`
gen_require(`
type snmpd_var_lib_t;
')
dontaudit $1 snmpd_var_lib_t:file write;
')
########################################
## <summary>
## All of the rules required to
## administrate an snmp environment.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <param name="role">
## <summary>
## Role allowed access.
## </summary>
## </param>
## <rolecap/>
#
interface(`snmp_admin',`
gen_require(`
type snmpd_t, snmpd_log_t, snmpd_initrc_exec_t;
type snmpd_var_lib_t, snmpd_runtime_t;
')
allow $1 snmpd_t:process { ptrace signal_perms };
ps_process_pattern($1, snmpd_t)
init_startstop_service($1, $2, snmpd_t, snmpd_initrc_exec_t)
logging_list_logs($1)
admin_pattern($1, snmpd_log_t)
files_list_var_lib($1)
admin_pattern($1, snmpd_var_lib_t)
files_list_pids($1)
admin_pattern($1, snmpd_runtime_t)
')