https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=3786
Summary: NDMP fragmentation fails when final fragment is very
small
Product: Wireshark
Version: SVN
Platform: x86
OS/Version: Windows XP
Status: NEW
Severity: Normal
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: chcosta75@xxxxxxxxxxx
Chris Costa <chcosta75@xxxxxxxxxxx> changed:
What |Removed |Added
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Attachment #3428| |review_for_checkin?
Flag| |
Created an attachment (id=3428)
--> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=3428)
Patch for small NDMP fragment problem
Build Information:
TShark 1.3.0-CCOSTA
Copyright 1998-2009 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 with GLib 2.20.3, with WinPcap (version unknown), with libz 1.2.3,
without POSIX capabilities, with libpcre 7.0, with SMI 0.4.8, with c-ares
1.6.0,
with Lua 5.1, without Python, with GnuTLS 2.8.1, with Gcrypt 1.4.4, with MIT
Kerberos, with GeoIP.
Running on Windows XP Service Pack 3, build 2600, with WinPcap version 4.0.2
(packet.dll version 4.0.0.1040), based on libpcap version 0.9.5, GnuTLS 2.8.1,
Gcrypt 1.4.4.
Built using Microsoft Visual C++ 9.0 build 30729
--
I encountered a situation where the final fragment of an NDMP PDU was very
small, and fragment reassembly was failing. The check_ndmp_rm function was
incorrectly assuming that any fragment less than 24 bytes (the size of the NDMP
header) was invalid, but that clearly isn't a valid check due to these
circumstances.
I created a patch that alters this check so that NDMP fragmentation will work
correctly in this situation.
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