Wireshark-bugs: [Wireshark-bugs] [Bug 5110] Dissector of TFT - Traffic Flow Template(10.5.6.12)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5110
--- Comment #7 from jindalprateek87 <jindalprateek87@xxxxxxxxx> 2010-08-15 22:37:26 PDT ---
(In reply to comment #6)
> Hi,
> As far as I can tell the only "fix" missing from trunk
> http://anonsvn.wireshark.org/viewvc/trunk/epan/dissectors/packet-gsm_a_gm.c?view=log
> is the missing break commited in 33794. use the abov link to browse the top of
> tree(trunk) version.
>
> I'll scedule the fix for 1.4.RC3 I think backporting it to 1.2 may be difficult
> as the file has both bugfixes and features added.
> Regards
> Anders
Hi Anders,
There is another bug in the dissector for TFT Operation code = 1,3 or 4(create
new, Add packet filters or Replace packet filters). While dissecting a Packet
Filter Identifier in Packet Filter List, each Packet filter identifier can have
multiple Packet filter component type identifiers(as mentioned below) in Packet
filter contents part -
Packet filter component type identifiers
0 0 0 1 0 0 0 0 IPv4 remote address type
0 0 1 0 0 0 0 0 IPv6 remote address type
0 0 1 1 0 0 0 0 Protocol identifier/Next header type
0 1 0 0 0 0 0 0 Single local port type
0 1 0 0 0 0 0 1 Local port range type
0 1 0 1 0 0 0 0 Single remote port type
0 1 0 1 0 0 0 1 Remote port range type
0 1 1 0 0 0 0 0 Security parameter index type
0 1 1 1 0 0 0 0 Type of service/Traffic class type
1 0 0 0 0 0 0 0 Flow label type
REF- ETSI TS 124 008 V7.14.0 (2009-03), 3GPP TS 24.008 version 7.14.0 Release 7
Now in case Packet filter content of the first Packet Filter Identifier
contains 2 or more Packet filter component type identifiers, for eg - IPv4
remote address type, Protocol identifier/Next header type and Security
parameter index type(in that order). The dissector will only dissect(in switch
case) the Packet filter component type identifier type IPv4 remote address and
move ahead, incorrectly interpreting Packet filter component type identifier
type Protocol identifier/Next header type as next Packet Filter Identifier.
Regards,
Prateek
Design Engineer - Hughes Systique Corp
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