https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2633
Summary: IUA dissector ignores SAPI value when decoding protocol
data
Product: Wireshark
Version: 1.0.0
Platform: PC
OS/Version: Linux
Status: NEW
Severity: Normal
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: Peter.Hertting@xxxxxxx
Created an attachment (id=1891)
--> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=1891)
patch for IUA dissector
Build Information:
wireshark 1.0.0
Copyright 1998-2008 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+ 2.12.9, with GLib 2.16.1, with libpcap 0.9.8, with libz
1.2.3.3, with POSIX capabilities (Linux), with libpcre 7.4, without SMI, with
ADNS, with Lua 5.1, with GnuTLS 2.0.4, with Gcrypt 1.2.4, with MIT Kerberos,
with PortAudio V19-devel (built Mar 12 2008), without AirPcap.
Running on Linux 2.6.24-19-generic, with libpcap version 0.9.8.
Built using gcc 4.2.3 (Ubuntu 4.2.3-2ubuntu7).
--
IUA protocol data can carry various protocols, mostly Q.931 but also X.25 (and
others). The current IUA dissector assumes that it's only Q.931 though.
Therefore, it reports malformed packets when the IUA carries X.25 protocol data
for example.
I've attached a patch that allows the IUA dissector to call the X.25 dissector
if the SAPI value indicates that the payload consists of X.25 protocol data.
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