| Bug ID |
10526
|
| Summary |
A packet with IGMP version 1 is recognized as IGMP version 3
|
| Product |
Wireshark
|
| Version |
1.6.6
|
| Hardware |
x86-64
|
| OS |
Windows 7
|
| Status |
UNCONFIRMED
|
| Severity |
Normal
|
| Priority |
Low
|
| Component |
Dissection engine (libwireshark)
|
| Assignee |
[email protected]
|
| Reporter |
[email protected]
|
Created attachment 13121 [details]
A sample that shows how Wireshark recognizes IGMP query version 3 even though
the IGMP part contains exactly 8 bytes
Build Information:
Version 1.6.6 (SVNRev 41803 from /trunk-1.6)
Copyright 1998-2012 Gerald Combs <[email protected]> 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+ 2.22.1, with GLib 2.26.1, with WinPcap (version
unknown), with libz 1.2.5, without POSIX capabilities, without libpcre, without
SMI, with c-ares 1.7.1, 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 Mar
27 2012), with AirPcap.
Running on 64-bit Windows 7 Service Pack 1, build 7601, 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 2.12.18, Gcrypt 1.4.6, without AirPcap.
Built using Microsoft Visual C++ 9.0 build 21022
Wireshark is Open Source Software released under the GNU General Public
License.
Check the man page and http://www.wireshark.org for more information.
--
Discovered when developing Pcap.Net (http://pcapdot.net).
IGMP version 1 is 8 bytes long.
IGMP query version 3 is at least 12 bytes long.
The attached pcap file contains a packet with IGMP packet.
The IGMP packet is recognized by Wireshark 1.6.6 as IGMP query version 3 even
though the IGMP part contains exactly 8 bytes.
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