From eddebaad92516009a82dbe016ffeaa8b17e6ec0a Mon Sep 17 00:00:00 2001 From: Vadim Yanitskiy Date: Sat, 28 Dec 2019 17:45:34 +0100 Subject: MSC_Tests.ttcn: introduce TC_mm_id_resp_no_identity While investigating OS#4340, it was discovered that a malformed MM Identity Request with MI Type '111'B crashes OsmoMSC. Unfortunately, I could not find a way to encode such an invalid message in TITAN (because value '111'B is reserved), so I figured out that '000'B also crashes OsmoMSC. MM Identity Request is triggered by initiating an Update Location Request with reserved TMSI value 'FFFFFFFF'O (unknown to the MSC). Change-Id: I62f23355eb91df2edf9dc837c928cb86b530b743 Related: OS#4340 --- msc/MSC_Tests.ttcn | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) (limited to 'msc/MSC_Tests.ttcn') diff --git a/msc/MSC_Tests.ttcn b/msc/MSC_Tests.ttcn index e0d9c7ff..c2a5bbb9 100644 --- a/msc/MSC_Tests.ttcn +++ b/msc/MSC_Tests.ttcn @@ -5778,6 +5778,43 @@ testcase TC_invalid_mgcp_crash() runs on MTC_CT { vc_conn.done; } +friend function f_tc_mm_id_resp_no_identity(charstring id, BSC_ConnHdlrPars pars) +runs on BSC_ConnHdlr { + pars.tmsi := 'FFFFFFFF'O; + f_init_handler(pars); + + f_create_gsup_expect(hex2str(g_pars.imsi)); + + /* Initiate Location Updating using an unknown TMSI */ + f_bssap_compl_l3(f_build_lu_tmsi(pars.tmsi)); + + /* Expect an Identity Request, send response with no identity */ + BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_MM_ID_Req(CM_ID_TYPE_IMSI))); + BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MO_MM_ID_Rsp({ + lengthIndicator := 1, + mobileIdentityV := { + typeOfIdentity := '000'B, + oddEvenInd_identity := { + no_identity := { + oddevenIndicator := '0'B, + fillerDigits := '00000'H + } + } + } + }))); + + f_expect_lu_reject(); + f_expect_clear(); +} +testcase TC_mm_id_resp_no_identity() runs on MTC_CT { + var BSC_ConnHdlr vc_conn; + + f_init(); + + vc_conn := f_start_handler(refers(f_tc_mm_id_resp_no_identity), 7); + vc_conn.done; +} + control { execute( TC_cr_before_reset() ); execute( TC_lu_imsi_noauth_tmsi() ); @@ -5910,6 +5947,7 @@ control { execute( TC_lu_and_mt_call_osmux() ); } execute( TC_invalid_mgcp_crash() ); + execute( TC_mm_id_resp_no_identity() ); } -- cgit v1.2.3