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nrUE NAS: deal with security for NAS_CONN_ESTABLI_CNF

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This message is ciphered + integrity protected, let's decipher it
and integrity check it.
This commit is contained in:
Cedric Roux
2024-05-27 17:39:35 +02:00
parent 245f430ad9
commit 56abe6c118
1 changed files with 14 additions and 4 deletions
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openair3/NAS/NR_UE/nr_nas_msg_sim.c
+14 -4
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@@ -1291,13 +1291,23 @@ void *nas_nrue(void *args_p)
NAS_CONN_ESTABLI_CNF(msg_p).nasMsg.length);
uint8_t *pdu_buffer = NAS_CONN_ESTABLI_CNF(msg_p).nasMsg.data;
int msg_type = get_msg_type(pdu_buffer, NAS_CONN_ESTABLI_CNF(msg_p).nasMsg.length);
int pdu_length = NAS_CONN_ESTABLI_CNF(msg_p).nasMsg.length;
nr_ue_nas_t *nas = get_ue_nas_info(0);
security_state_t security_state = nas_security_rx_process(nas, pdu_buffer, pdu_length);
if (security_state != NAS_SECURITY_INTEGRITY_PASSED
&& security_state != NAS_SECURITY_NO_SECURITY_CONTEXT) {
LOG_E(NAS, "NAS integrity failed, discard incoming message\n");
break;
}
int msg_type = get_msg_type(pdu_buffer, pdu_length);
if (msg_type == REGISTRATION_ACCEPT) {
nr_ue_nas_t *nas = get_ue_nas_info(0);
handle_registration_accept(instance, nas, pdu_buffer, NAS_CONN_ESTABLI_CNF(msg_p).nasMsg.length);
handle_registration_accept(instance, nas, pdu_buffer, pdu_length);
} else if (msg_type == FGS_PDU_SESSION_ESTABLISHMENT_ACC) {
capture_pdu_session_establishment_accept_msg(pdu_buffer, NAS_CONN_ESTABLI_CNF(msg_p).nasMsg.length);
capture_pdu_session_establishment_accept_msg(pdu_buffer, pdu_length);
}
break;