https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4796
Summary: Malformed User Defined CIGI packets
Product: Wireshark
Version: SVN
Platform: All
OS/Version: All
Status: NEW
Severity: Minor
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: brian.w.woodard@xxxxxxxxx
Brian Woodard <brian.w.woodard@xxxxxxxxx> changed:
What |Removed |Added
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Attachment #4696| |review_for_checkin?
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Created an attachment (id=4696)
--> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=4696)
Patch for packet-cigi.c
Build Information:
Version 1.3.6-svn-trackerproto (SVN Rev 32920 from /trunk)
Copyright 1998-2010 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 GTK+ 2.16.6, (32-bit) 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
May
23 2010), with AirPcap, with new_packet_list.
Running on Windows XP Service Pack 2, build 2600, with WinPcap version 4.1.1
(packet.dll version 4.1.0.1753), 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
Wireshark is Open Source Software released under the GNU General Public
License.
Check the man page and http://www.wireshark.org for more information.
--
User Defined CIGI packets with a packet size greater than 127 bytes are
displayed as Malformed.
The cigi_add_data function checks to make sure that the packet size is not less
than 2 bytes since every CIGI packet should be at least 2 bytes. However, it
gets the packet size and puts it in a variable defined as gint8. So, any user
defined packets greater than 127 will be negative and less than 2.
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