| Bug ID |
8333
|
| Summary |
Corrections to Recent DNP3 Control Code Changes in Bug ID 7865
|
| Classification |
Unclassified
|
| Product |
Wireshark
|
| Version |
1.9.x (Experimental)
|
| Hardware |
x86
|
| OS |
Windows 7
|
| Status |
UNCONFIRMED
|
| Severity |
Normal
|
| Priority |
Low
|
| Component |
Dissection engine (libwireshark)
|
| Assignee |
[email protected]
|
| Reporter |
[email protected]
|
Created attachment 10011 [details]
DNP3 Patch file against rev 56985
Build Information:
Version 1.9.0-SELFM (SVN Rev Unknown from unknown)
Copyright 1998-2013 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 (32-bit) with GTK+ 2.24.14, with Cairo 1.10.2, with Pango 1.30.1, with
GLib 2.34.1, with WinPcap (4_1_2), with libz 1.2.5, without POSIX capabilities,
without libnl, with SMI 0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python,
with GnuTLS 2.12.18, with Gcrypt 1.4.6, with MIT Kerberos, with GeoIP, with
PortAudio V19-devel (built Jan 7 2013), with AirPcap.
Running on 32-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 30729
Wireshark is Open Source Software released under the GNU General Public
License.
Check the man page and http://www.wireshark.org for more information.
--
Changes to the packet-dnp3 Control Code Dissection broke proper dissection of
additional control code bits (Queue/Clear and Qualifier Fields) as well as
dissection to remaining 10 bytes. The main issue was that the "Control Status"
byte was relocated to before the Count,On-Time and Off-Time fields - not
correct as per the DNP3 specs.
I've attached a patch file (against rev 46985, current enough for DNP3) to
correct the issue.
I've also attached a sample pcap file that clearly illustrates the issue; the
capture file must be configured using the DLT_USER dissector to skip the first
12 bytes as 'data' and process the remaining payload as 'dnp3.udp'.
Thanks, Chris
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