Wireshark-bugs: [Wireshark-bugs] [Bug 12265] New: RPC/NFS incorrectly decodes as ACAP

Date: Wed, 16 Mar 2016 05:57:54 +0000
Bug ID 12265
Summary RPC/NFS incorrectly decodes as ACAP
Product Wireshark
Version 2.0.1
Hardware x86
OS All
Status UNCONFIRMED
Severity Major
Priority Low
Component Dissection engine (libwireshark)
Assignee [email protected]
Reporter [email protected]

Created attachment 14418 [details]
TCP stream containing RPC NFS traffic

Build Information:
 $ tshark -v
TShark (Wireshark) 2.0.1 (SVN Rev Unknown from unknown)

Copyright 1998-2015 Gerald Combs <[email protected]> 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 1.2.7, with GLib 2.42.2, with SMI 0.4.8, with c-ares 1.10.0, without
Lua, with GnuTLS 3.3.8, with Gcrypt 1.5.3, with MIT Kerberos, without GeoIP.

Running on Linux 3.10.0-327.10.1.el7.x86_64, with locale en_AU.utf8, with
libpcap version 1.5.3, with libz 1.2.7, with GnuTLS 3.3.8, with Gcrypt 1.5.3.
Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz (with SSE4.2)

Built using gcc 4.8.5 20150623 (Red Hat 4.8.5-4).

--
The attached file contains a TCP stream from an NFS mount.

This stream incorrectly decodes RPC+NFS traffic as ACAP.

Disabling the ACAP protocol results in correct decoding as RPC+NFS.

Decode As, 2049, RPC  results in correct decoding as RPC+NFS.

The rest of the NFS mount was fine, just this particular stream has this issue.

Wireshark 1.x correctly decodes this stream as RPC+NFS, so it seems this is a
regression in 2.0.


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