https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5941
Summary: Wireshark crashes when calling TreeItem:set_len() on
TreeItem without tvb
Product: Wireshark
Version: 1.4.6
Platform: x86-64
OS/Version: Mac OS X 10.6
Status: NEW
Severity: Major
Priority: Medium
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: tony19@xxxxxxxxx
Created an attachment (id=6374)
--> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=6374)
Mac OS X crash report
Build Information:
2011-05-21 19:41:49.763 defaults[4522:903]
The domain/default pair of (kCFPreferencesAnyApplication,
AppleAquaColorVariant) does not exist
2011-05-21 19:41:49.775 defaults[4523:903]
The domain/default pair of (kCFPreferencesAnyApplication, AppleHighlightColor)
does not exist
wireshark 1.4.6 (SVN Rev 36706 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 (64-bit) with GTK+ 2.20.1, with GLib 2.24.1, with libpcap 1.0.0, with
libz 1.2.3, without POSIX capabilities, without libpcre, without SMI, without
c-ares, without ADNS, with Lua 5.1, without Python, without GnuTLS, without
Gcrypt, with MIT Kerberos, without GeoIP, with PortAudio V19-devel (built Jan
11
2011 18:26:13), without AirPcap.
Running on Darwin 10.7.0 (Mac OS 10.6.7), with libpcap version 1.0.0, with libz
1.2.3.
Built using gcc 4.2.1 (Apple Inc. build 5666) (dot 3).
--
After adding a ProtoField.bytes to a TreeItem without a tvb, calling set_len()
on the resulting TreeItem causes Wireshark to crash. Note that Wireshark
doesn't crash if the ProtoField type is a number or string. Even though it
doesn't make sense to call set_len() on an item that doesn't have a Tvb,
Wireshark should not crash.
There were no print-outs to stdout at the time of the crash.
Example Lua:
----------->
local proto_foo = Proto("foo", "Foo Protocol")
proto_foo.fields.bytes = ProtoField.bytes("foo.bytes", "Byte array")
function proto_foo.dissector(buf, pinfo, tree)
local t = tree:add(proto_foo, buf())
-- Add field without Tvb
local t2 = t:add(proto_foo.fields.bytes, "test")
-- CRASH HERE!
t2:set_len(4)
end
udp_table = DissectorTable.get("udp.port")
udp_table:add(7777, proto_foo)
--
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