https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5065
Summary: [NAS EPS] PDN Disconnect Request dissection
Product: Wireshark
Version: SVN
Platform: Other
OS/Version: All
Status: NEW
Severity: Normal
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: pascal.quantin@xxxxxxxxx
Pascal Quantin <pascal.quantin@xxxxxxxxx> changed:
What |Removed |Added
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Attachment #4980| |review_for_checkin?
Flag| |
Created an attachment (id=4980)
--> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=4980)
Fix for PDN Disconnect Request dissection
Build Information:
Version 1.5.0 (SVN Rev 33649 from /trunk)
Copyright 1998-2010 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 with GTK+ 2.16.6, (32-bit) with GLib 2.22.4, with WinPcap (version
unknown), with libz 1.2.3, without POSIX capabilities, without libpcre, with
SMI
0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python, with GnuTLS 2.8.5, with
Gcrypt 1.4.5, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built
Jul
28 2010), with AirPcap.
Running on Windows XP Service Pack 3, build 2600, 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 2.8.5, Gcrypt 1.4.5, without AirPcap.
Built using Microsoft Visual C++ 9.0 build 30729
Wireshark is Open Source Software released under the GNU General Public
License.
Check the man page and http://www.wireshark.org for more information.
--
The attached patch fixes the dissection of the PDN Disconnect Request message
in case the optional Protocol Configuration Options IE is not present.
Without it you get:
Non-Access-Stratum (NAS)PDU
0010 .... = Security header type: Integrity protected and ciphered (2)
.... 0010 = Protocol discriminator: EPS session management messages (2)
Message authentication code: 0x00000000
Sequence number: 5
0000 .... = EPS bearer identity: 0x00
.... 0010 = Protocol discriminator: EPS session management messages (2)
Procedure transaction identity: 2
NAS EPS session management messages: PDN disconnect request (0xd2)
0000 .... = Spare half octet: 0
.... 0101 = Linked EPS bearer identity: EPS bearer identity value 5 (5)
[Malformed Packet: NAS-EPS]
[Expert Info (Error/Malformed): Malformed Packet (Exception occurred)]
Once applied, you get:
Non-Access-Stratum (NAS)PDU
0010 .... = Security header type: Integrity protected and ciphered (2)
.... 0010 = Protocol discriminator: EPS session management messages (2)
Message authentication code: 0x00000000
Sequence number: 5
0000 .... = EPS bearer identity: 0x00
.... 0010 = Protocol discriminator: EPS session management messages (2)
Procedure transaction identity: 2
NAS EPS session management messages: PDN disconnect request (0xd2)
0000 .... = Spare half octet: 0
.... 0101 = Linked EPS bearer identity: EPS bearer identity value 5 (5)
--
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