https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13025
Bug ID: 13025
Summary: Relay Data option is not allowed in Bulk Leasequery
reply
Product: Wireshark
Version: 2.2.1
Hardware: x86
OS: macOS 10.12
Status: UNCONFIRMED
Severity: Major
Priority: Low
Component: Dissection engine (libwireshark)
Assignee: bugzilla-ad...@wireshark.org
Reporter: hoon...@gmail.com
Build Information:
Version 2.2.1 (v2.2.1-0-ga6fbd27 from master-2.2)
Copyright 1998-2016 Gerald Combs <ger...@wireshark.org> and contributors.
License GPLv2+: GNU GPL version 2 or later
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
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 Qt 5.3.2, with libpcap, without POSIX capabilities, with
GLib 2.36.0, with zlib 1.2.5, with SMI 0.4.8, with c-ares 1.12.0, with Lua
5.2.4, with GnuTLS 2.12.19, with Gcrypt 1.5.0, with MIT Kerberos, with GeoIP,
with QtMultimedia, without AirPcap.
Running on Mac OS X 10.12, build 16A323 (Darwin 16.0.0), with locale C, with
libpcap version 1.7.4 - Apple version 67, with GnuTLS 2.12.19, with Gcrypt
1.5.0, with zlib 1.2.8.
Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz (with SSE4.2)
Built using llvm-gcc 4.2.1 (Based on Apple Inc. build 5658) (LLVM build
2336.9.00).
--
when dhcpv6 dissector analyzes the Leasequery Relay Data option in the DHCPv6
Bulk Leasequery, it flags the option as a malformed and treats the
DHCP-relay-message value in it as ASCII-characters not the Relay Message
option.
The Bulk Leasequery protocol[RFC 5460] extends Leasequery protocol[RFC5007]. so
I think the dissector is able to allow Bulk Leasequery reply messages to
contain the Relay Data option.
DHCPv6 Bulk Leasequery
Message size: 183
Message type: Leasequery-reply (15)
Reserved: 50
Transaction ID: 44441
DHCPv6 Options
Client Identifier
Server Identifier
Status code
Leasequery Relay Data
Option: Leasequery Relay Data (47)
Length: 76
Value: 20010270fc02500000000000000000010c0020010270fc02...
[Expert Info (Warning/Malformed): LQ_RELAY_DATA: Not allowed in
Bulk Leasequery]
[LQ_RELAY_DATA: Not allowed in Bulk Leasequery]
[Severity level: Warning]
[Group: Malformed]
Peer address: 2001:270:fc02:5000::1
DHCPv6 relay message: \f
Leasequery Client Data
Relay Data option [RFC5007 Section 4.1.2.4]
Bulk Leasequery reply [RFC5460 Section 5.2]
Relay Message option [RFC3315 Section 22.10]
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