Wireshark-bugs: [Wireshark-bugs] [Bug 6553] New: SIP dissector claims malformed packet on WWW-Au
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Wed, 9 Nov 2011 00:23:58 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6553

           Summary: SIP dissector claims malformed packet on
                    WWW-Authenticate
           Product: Wireshark
           Version: 1.6.3
          Platform: x86-64
        OS/Version: Windows 7
            Status: NEW
          Severity: Minor
          Priority: Low
         Component: Wireshark
        AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
        ReportedBy: taisto.qvist@xxxxxxxxx


Created an attachment (id=7390)
 --> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=7390)
Malformed trace

Build Information:
Version 1.7.0 (SVN Rev 39768 from /trunk)

Copyright 1998-2011 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+ 2.22.1, with Cairo 1.10.2, with Pango 1.28.3, with
GLib 2.26.1, with WinPcap (version unknown), with libz 1.2.5, without POSIX
capabilities, with SMI 0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python,
with GnuTLS 2.10.3, with Gcrypt 1.4.6, without Kerberos, with GeoIP, with
PortAudio V19-devel (built Nov  8 2011), 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 2.10.3, Gcrypt 1.4.6, without AirPcap.

Built using Microsoft Visual C++ 9.0 build 21022

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  have opened the same capture in 1.[4-7].x  and same results)

The SIP dissector seems to fail when decoding the WWW-Authenticate header in a
SIP 401 response, claiming the message is malformed.

It looks like it chokes on the qop parameter, containing "auth, auth-int".

Not a parser expert, but at least I cant find any problems with the response, 
and the UAC doesnt complain either.

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