Wireshark-bugs: [Wireshark-bugs] [Bug 5630] New: LUA dissector - gibberish in "Info" column afte
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Fri, 28 Jan 2011 04:43:25 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5630

           Summary: LUA dissector - gibberish in "Info" column after
                    scrolling through a capture file
           Product: Wireshark
           Version: 1.4.3
          Platform: x86
        OS/Version: Windows XP
            Status: NEW
          Severity: Major
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: yuri@xxxxxxxxxxxx


Build Information:
wireshark 1.4.3 (SVN Rev 35482 from /trunk-1.4)

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 (32-bit) with GTK+ 2.16.6, with GLib 2.22.4, with WinPcap (version
unknown), with libz 1.2.3, without POSIX capabilities, without libpcre, with
SMI
0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python, with GnuTLS 2.8.5, with
Gcrypt 1.4.5, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built
Jan
11 2011), 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 2.8.5, Gcrypt 1.4.5, without AirPcap.

Built using Microsoft Visual C++ 9.0 build 30729
--
While testing the option of using LUA to write a dissector to a made-up
protocol, I've noticed that the dissector works well - however, the "Info"
column sometimes shows gibberish instead of the text the LUA code is
instructing it to show.

To reproduce - load the attached test.lua plugin, open the attached pcap file,
click on one of the captures and use page-up/down to scroll through the capture
file - after a while you will notice the Info column is full of gibberish -
sometimes it includes obvious Wireshark memory segment data.

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