Wireshark-bugs: [Wireshark-bugs] [Bug 9183] New: Fix dissection of "3GPP Specific PMIPv6 error c
| Bug ID |
9183
|
| Summary |
Fix dissection of "3GPP Specific PMIPv6 error code" MIPv6 Mobility Option
|
| Classification |
Unclassified
|
| Product |
Wireshark
|
| Version |
unspecified
|
| Hardware |
All
|
| OS |
All
|
| Status |
UNCONFIRMED
|
| Severity |
Major
|
| Priority |
Low
|
| Component |
Dissection engine (libwireshark)
|
| Assignee |
bugzilla-admin@wireshark.org
|
| Reporter |
masayuki.takemura@gmail.com
|
| Attachment #11648 Flags |
review_for_checkin?
|
Created attachment 11648 [details]
Fix "3GPP Specific PMIPv6 Error Code" Mobility Option dissection
Build Information:
$ ./wireshark -v
wireshark 1.11.0 (SVN Rev 52211 from /trunk)
Copyright 1998-2013 Gerald Combs <gerald@wireshark.org> 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 (64-bit) with GTK+ 2.24.6, with Cairo 1.10.2, with Pango 1.34.1, with
GLib 2.36.3, with libpcap, with libz 1.2.7, without POSIX capabilities, without
libnl, with SMI 0.4.8, without c-ares, with ADNS, without Lua, without Python,
with GnuTLS 2.12.23, with Gcrypt 1.5.2, without Kerberos, with GeoIP, without
PortAudio, with AirPcap.
Running on FreeBSD 9.1-RELEASE, without locale, with libpcap version 1.2.1,
with
libz 1.2.7, GnuTLS 2.12.23, Gcrypt 1.5.2, without AirPcap.
Quad-Core AMD Opteron(tm) Processor 2384
Built using gcc 4.2.1 20070831 patched [FreeBSD].
--
According to 3GPP R8/R9/R10/R11, the mobility option "3GPP Specific PMIPv6
error
code" is 1 octet length.
However, in the source file packet-mip6.c, the length of the option is set to 4
octets (around line 1744):
/* 2, 3GPP Specific PMIPv6 Error Code */
case 2:
proto_tree_add_item(tree, hf_mip6_opt_3gpp_spec_pmipv6_err_code, tvb,
offset, 4, ENC_BIG_ENDIAN);
break;
Due to this, a MIPv6 packet which contains this option is displayed as
malformed packet.
Attached patch fixes the issue. The patch passed 1024 rounds of fuzz test.
Reference:
* 3GPP TS 29.275, Section 12.1.1.1 3GPP Specific PMIPv6 error code
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