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commit: 30f047c074b82fddea4cd78aab1e2935733d29ef |
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Author: David Sugar <dsugar <AT> tresys <DOT> com> |
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AuthorDate: Sat Feb 24 14:52:17 2018 +0000 |
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Commit: Sven Vermeulen <swift <AT> gentoo <DOT> org> |
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CommitDate: Sun Mar 25 09:30:30 2018 +0000 |
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URL: https://gitweb.gentoo.org/proj/hardened-refpolicy.git/commit/?id=30f047c0 |
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ntp only uses UDP, remove TCP permissions |
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The NTP protocol states it only used UDP for network communication. Remove currently allowed access to TCP that should not be needed. |
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Signed-off-by: Dave Sugar <dsugar <AT> tresys.com> |
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policy/modules/contrib/ntp.te | 8 +------- |
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1 file changed, 1 insertion(+), 7 deletions(-) |
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diff --git a/policy/modules/contrib/ntp.te b/policy/modules/contrib/ntp.te |
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index 66c8eaa9..50d54178 100644 |
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--- a/policy/modules/contrib/ntp.te |
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+++ b/policy/modules/contrib/ntp.te |
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@@ -59,7 +59,6 @@ allow ntpd_t self:process { signal_perms getcap setcap setsched setrlimit }; |
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allow ntpd_t self:fifo_file rw_fifo_file_perms; |
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allow ntpd_t self:shm create_shm_perms; |
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allow ntpd_t self:socket create; |
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-allow ntpd_t self:tcp_socket { accept listen }; |
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allow ntpd_t self:unix_dgram_socket sendto; |
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allow ntpd_t ntp_conf_t:file read_file_perms; |
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@@ -101,20 +100,15 @@ kernel_request_load_module(ntpd_t) |
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corenet_all_recvfrom_unlabeled(ntpd_t) |
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corenet_all_recvfrom_netlabel(ntpd_t) |
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-corenet_tcp_sendrecv_generic_if(ntpd_t) |
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corenet_udp_sendrecv_generic_if(ntpd_t) |
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-corenet_tcp_sendrecv_generic_node(ntpd_t) |
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corenet_udp_sendrecv_generic_node(ntpd_t) |
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corenet_udp_bind_generic_node(ntpd_t) |
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+corenet_sendrecv_ntp_client_packets(ntpd_t) |
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corenet_sendrecv_ntp_server_packets(ntpd_t) |
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corenet_udp_bind_ntp_port(ntpd_t) |
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corenet_udp_sendrecv_ntp_port(ntpd_t) |
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|
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-corenet_sendrecv_ntp_client_packets(ntpd_t) |
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-corenet_tcp_connect_ntp_port(ntpd_t) |
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-corenet_tcp_sendrecv_ntp_port(ntpd_t) |
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- |
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corecmd_exec_bin(ntpd_t) |
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corecmd_exec_shell(ntpd_t) |
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