[bugzilla-daemon@xxxxxxxxxxxxx]

Bug ID	12976
Summary	[Dissector bug, protocol P1: C:\buildbot\wireshark\wireshark-2.2-64\windows-2012r2-x64\build\epan\tvbuff.c:625: failed assertion "tvb && tvb->initialized"]
Product	Wireshark
Version	2.2.0
Hardware	x86
OS	Windows Server 2008 R2
Status	UNCONFIRMED
Severity	Major
Priority	Low
Component	Dissection engine (libwireshark)
Assignee	bugzilla-admin@wireshark.org
Reporter	MyTwittering@outlook.com

Created attachment 14972 [details]
Trace of an X.400 message & report

Build Information:
Version 2.2.0 (v2.2.0-0-g5368c50 from master-2.2)

Copyright 1998-2016 Gerald Combs <gerald@wireshark.org> and contributors.
License GPLv2+: GNU GPL version 2 or later
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
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 Qt 5.3.2, with WinPcap (4_1_3), with GLib 2.42.0, with
zlib 1.2.8, with SMI 0.4.8, with c-ares 1.11.0, with Lua 5.2.4, with GnuTLS
3.2.15, with Gcrypt 1.6.2, with MIT Kerberos, with GeoIP, with QtMultimedia,
with AirPcap.

Running on 64-bit Windows Server 2008R2 Service Pack 1, build 7601, with
locale
English_United Kingdom.1252, with WinPcap version 4.1.3 (packet.dll version
4.1.0.2980), based on libpcap version 1.0 branch 1_0_rel0b (20091008), with
GnuTLS 3.2.15, with Gcrypt 1.6.2, without AirPcap.
Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz (with SSE4.2), with 8191MB of physical
memory.


Built using Microsoft Visual C++ 12.0 build 40629

Wireshark is Open Source Software released under the GNU General Public
License.

Check the man page and http://www.wireshark.org for more information.
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I'm seeing this when trying to analyse a (non-delivery) report message from
Exchange 2003 (using the MS X.400 connector).

In the attached trace, it occurs on trace no. 31.

It's not a 1-off, it occurs each time I've tried the same form of message.

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