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paging: actually verify subscriber authorization

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Before this, any paging response would be accepted by the CN, without
checking the database whether the subscriber is in fact authorized.

The probability that a subscriber would be able to take unauthorized action
is slim, nevertheless checking authorization status with the database should
happen before we accept a connection.
This commit is contained in:
Neels Hofmeyr
2016-05-02 15:57:53 +02:00
parent 3a9c52a5dc
commit 04bfcdd6c2
1 changed files with 8 additions and 1 deletions
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9
openbsc/src/libmsc/gsm_subscriber.c
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@@ -132,7 +132,14 @@ int subscr_rx_paging_response(struct msgb *msg,
pr = (struct gsm48_pag_resp *)gh->data;
/* Secure the connection */
return gsm48_secure_channel(conn, pr->key_seq, subscr_paging_sec_cb, NULL);
if (subscr_authorized(conn->subscr))
return gsm48_secure_channel(conn, pr->key_seq,
subscr_paging_sec_cb, NULL);
/* Not authorized. Failure. */
subscr_paging_sec_cb(GSM_HOOK_RR_SECURITY, GSM_SECURITY_AUTH_FAILED,
msg, conn, NULL);
return -1;
}
int msc_paging_request(struct gsm_network *network, struct gsm_subscriber *subscr,