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GSUP: Validate DNS name string encoding

This commit is contained in:
João Valverde 2022-10-19 14:31:30 +01:00
parent 93efea8ea9
commit d20ed9491c
1 changed files with 6 additions and 2 deletions
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8
epan/dissectors/packet-gsm_gsup.c
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@ -29,6 +29,7 @@
#include <epan/expert.h>
#include <epan/conversation.h>
#include <epan/asn1.h>
#include <epan/strutil.h>
#include "packet-gsm_a_common.h"
#include "packet-gsm_map.h"
@ -790,9 +791,12 @@ dissect_gsup_tlvs(tvbuff_t *tvb, int base_offs, int length, packet_info *pinfo,
if (ch == '*')
proto_item_append_text(ti, ", '*' (Wildcard)");
} else {
char *name_out;
get_dns_name(tvb, offset, len, 0, &apn, &apn_len);
proto_tree_add_string(att_tree, hf_gsup_apn, tvb, offset, len, apn);
proto_item_append_text(ti, ", %s", apn);
name_out = format_text(pinfo->pool, apn, apn_len);
proto_tree_add_string(att_tree, hf_gsup_apn, tvb, offset, len, name_out);
proto_item_append_text(ti, ", %s", name_out);
}
break;
case OSMO_GSUP_PDP_CONTEXT_ID_IE: