Wireshark-bugs: [Wireshark-bugs] [Bug 11584] New: TURN channeldata with padding is not recognize
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Sat, 10 Oct 2015 16:30:36 +0000
Bug ID 11584
Summary TURN channeldata with padding is not recognized on UDP
Product Wireshark
Version unspecified
Hardware x86
OS All
Status UNCONFIRMED
Severity Enhancement
Priority Low
Component Dissection engine (libwireshark)
Assignee bugzilla-admin@wireshark.org
Reporter fippo@andyet.net 

Created attachment 13906 [details]
channeldata with padding

Build Information:
TShark (Wireshark) 2.1.0 (v2.1.0rc0-33-gbcd9849 from master)

Copyright 1998-2015 Gerald Combs <gerald@wireshark.org> and contributors.
License GPLv2+: GNU GPL version 2 or later
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
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 libpcap, with POSIX capabilities (Linux), without libnl,
with libz 1.2.8, with GLib 2.40.2, without SMI, without c-ares, without ADNS,
with Lua 5.1, with GnuTLS 2.12.23, with Gcrypt 1.5.3, with MIT Kerberos,
without
GeoIP.

Running on Linux 3.13.0-65-generic, with locale de_DE.UTF-8, with libpcap
version 1.5.3, with libz 1.2.8, with GnuTLS 2.12.23, with Gcrypt 1.5.3.
Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz (with SSE4.2)

Built using gcc 4.8.4.

--
Microsoft Edge is padding TURN channeldata. This breaks the dissectors
recognition logic which assumes that UDP is never padded -- which is a MAY
however: "Over UDP, the padding is not required but MAY be included."
(from https://tools.ietf.org/html/rfc5766#section-11.5)

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