Wireshark-bugs: [Wireshark-bugs] [Bug 2828] New: Wireshark 1.02 Diameter Dissector fails RFC 400
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Fri, 22 Aug 2008 13:20:21 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2828

           Summary: Wireshark 1.02 Diameter Dissector fails RFC 4005
                    compliance
           Product: Wireshark
           Version: 1.0.2
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: Normal
          Priority: Medium
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: dbastiani@xxxxxxxxxxxx


Build Information:
Version 1.0.2 (SVN Rev 25698)

Copyright 1998-2008 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+ 2.12.8, with GLib 2.14.6, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, with libpcre 7.0, with SMI 0.4.8,
with ADNS, with Lua 5.1, with GnuTLS 2.3.8, with Gcrypt 1.4.1, with MIT
Kerberos, with PortAudio V19-devel, with AirPcap.

Running on Windows XP Service Pack 2, build 2600, with WinPcap version 4.0.2
(packet.dll version 4.0.0.1040), based on libpcap version 0.9.5, without
AirPcap.

Built using Microsoft Visual C++ 6.0 build 8804

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

Check the man page and http://www.wireshark.org for more information.
--
I've run into an issue w/ Wireshark 1.02 where AAR "AA-Request" messages are
being listed as AAA "AA-Answer" messages in the 'Info' section of the upper
most window.

RFC 4005 : Section 3.1 states:
   The AA-Request (AAR), which is indicated by setting the Command-Code
   field to 265 and the 'R' bit in the Command Flags field, is used to
   request authentication and/or authorization for a given NAS user.

RFC 4005 : Section 3.2 states:
   The AA-Answer (AAA) message is indicated by setting the Command-Code
   field to 265 and clearing the 'R' bit in the Command Flags field.  It
   is sent in response to the AA-Request (AAR) message.

It appears the DIAMETER dissector used in Wireshark 1.02 is not taking into
account the request bit and instead relying upon the command-code alone to
display the AA-Answer.


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