Wireshark-bugs: [Wireshark-bugs] [Bug 8643] New: SSL PDUs are incorrectly repeated in the Follow
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Fri, 10 May 2013 20:00:06 +0000
Bug ID 8643
Summary SSL PDUs are incorrectly repeated in the Follow SSL Stream dialog
Classification Unclassified
Product Wireshark
Version 1.11.x (Experimental)
Hardware x86-64
OS Windows 7
Status UNCONFIRMED
Severity Normal
Priority Low
Component Wireshark
Assignee bugzilla-admin@wireshark.org
Reporter robert@robertbullen.com 

Build Information:
Version 1.11.0 (SVN Rev 49234 from /trunk)

Copyright 1998-2013 Gerald Combs <gerald@wireshark.org> 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+ 2.24.14, with Cairo 1.10.2, with Pango 1.30.1, with
GLib 2.34.1, with WinPcap (4_1_3), with libz 1.2.5, without POSIX capabilities,
without libnl, with SMI 0.4.8, with c-ares 1.9.1, with Lua 5.1, without Python,
with GnuTLS 2.12.18, with Gcrypt 1.4.6, without Kerberos, with GeoIP, with
PortAudio V19-devel (built May 10 2013), with AirPcap.

Running on 64-bit Windows 7 Service Pack 1, build 7601, with WinPcap version
4.1.3 (packet.dll version 4.1.0.2980), based on libpcap version 1.0 branch
1_0_rel0b (20091008), GnuTLS 2.12.18, Gcrypt 1.4.6, without AirPcap.
       Intel(R) Core(TM) i5-3320M CPU @ 2.60GHz, with 7888MB of physical
memory.


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.
--
When a TCP segment contains the end of two or more SSL PDUs, the TCP reassembly
code passes that segment up to the SSL dissector multiple times--one for each
SSL PDU. The SSL dissector queues the packet for SSL tap listeners each time it
is invoked. Therefore a single packet can be processed by SSL tap listeners
multiple times. But the tap data that the SSL dissector sends to its tap
listeners is a linked list of all PDUs in the packet.

The SSL tap listener responsible for populating the Follow SSL Stream dialog
did not account for the possibility of seeing a packet multiple times. As a
result, it would process the entire linked list of PDUs each time it received a
packet, and that would result in some SSL PDUs showing up two or more times in
the dialog.

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