Wireshark-bugs: [Wireshark-bugs] [Bug 7435] New: Failed to dissect TLS handshake packets
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Wed, 4 Jul 2012 08:56:09 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7435

           Summary: Failed to dissect TLS handshake packets
           Product: Wireshark
           Version: 1.8.0
          Platform: x86
        OS/Version: Windows XP
            Status: NEW
          Severity: Major
          Priority: Low
         Component: Dissection engine (libwireshark)
        AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
        ReportedBy: michaelc@xxxxxxxxxxxxxxx


Created attachment 8713
  --> https://bugs.wireshark.org/bugzilla/attachment.cgi?id=8713
TLS handshake capture

Build Information:
Version 1.8.0 (SVN Rev 43431 from /trunk-1.8)

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 (32-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,
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, with MIT Kerberos, with GeoIP, with PortAudio
V19-devel (built Jun 21 2012), 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 2.12.18, Gcrypt 1.4.6, without AirPcap.

Built using Microsoft Visual C++ 10.0 build 40219

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 pcap is the handshake between OpenSSL client and Java based
server. Wireshark 1.8.0 failed to properly dissect the
fragmented TLS handshake packet from the server after ServerHello, and instead
reports it as a malformed packet.

The second attachment is a SSL dump from the client software showing all
packets were interpreted correctly. Never mind the "Unknown CA" alert, which is
irrelevant to this bug.

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