https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7718
Summary: mm_context_nas_dl_cnt and mm_context_nas_ul_cnt are
not dissected properly in ContextResponse message in
Gtpv2
Product: Wireshark
Version: SVN
Platform: x86-64
OS/Version: Windows 7
Status: NEW
Severity: Minor
Priority: Low
Component: Wireshark
AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
ReportedBy: esahaapamaki@xxxxxxxxxxx
Build Information:
Version 1.9.0-SVN-44880 (SVN Rev 44880 from /trunk)
Copyright 1998-2012 Gerald Combs <gerald@xxxxxxxxxxxxx> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Compiled (64-bit) with GTK+ 2.24.10, with Cairo 1.10.2, with Pango 1.30.0, with
GLib 2.32.2, with WinPcap (4_1_2), with libz 1.2.5, without POSIX capabilities,
without libnl, with SMI 0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python,
with GnuTLS 2.12.18, with Gcrypt 1.4.6, without Kerberos, with GeoIP, with
PortAudio V19-devel (built Sep 11 2012), with AirPcap.
Running on 64-bit Windows 7 Service Pack 1, build 7601, with WinPcap version
4.1.2 (packet.dll version 4.1.0.2001), based on libpcap version 1.0 branch
1_0_rel0b (20091008), GnuTLS 2.12.18, Gcrypt 1.4.6, without AirPcap.
Built using Microsoft Visual C++ 10.0 build 40219
--
Hi,
The fields mm_context_nas_dl_cnt and mm_context_nas_ul_cnt are 3 octets long
but wireshark takes only the first octet.
Problem could be with these code lines:
/* Octet 8-10 NAS Downlink Count*/
proto_tree_add_item(tree, hf_gtpv2_mm_context_nas_dl_cnt, tvb, offset, 1,
ENC_BIG_ENDIAN);
offset += 3;
/* Octet 11-13 NAS Uplink Count */
proto_tree_add_item(tree, hf_gtpv2_mm_context_nas_ul_cnt, tvb, offset, 1,
ENC_BIG_ENDIAN);
offset += 3;
Offset is incresed by 3 but only 1 octet is read.
-Esa
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