Wireshark · Wireshark-bugs: [Wireshark-bugs] [Bug 10837] New: Incorrect decoding of IPv4 Interface/Neighbor Address sub-TLVs in

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Bug ID	10837
Summary	Incorrect decoding of IPv4 Interface/Neighbor Address sub-TLVs in Extended IS Reachability TLV of IS-IS
Product	Wireshark
Version	1.12.1
Hardware	x86-64
OS	Debian
Status	UNCONFIRMED
Severity	Trivial
Priority	Low
Component	Dissection engine (libwireshark)
Assignee	bugzilla-admin@wireshark.org
Reporter	alexander.okonnikov@gmail.com

Created attachment 13374 [details]
IS-IS LSPDU containing Extended IS Reachability TLV with IPv4 Interface Address
and IPv4 Neighbor Address sub-TLVs

Build Information:
wireshark 1.12.1 (Git Rev Unknown from unknown)

Copyright 1998-2014 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+ 3.14.5, with Cairo 1.14.0, with Pango 1.36.8, with
GLib 2.42.1, with libpcap, with libz 1.2.8, with POSIX capabilities (Linux),
with libnl 3, with SMI 0.4.8, with c-ares 1.10.0, with Lua 5.2, without Python,
with GnuTLS 3.3.8, with Gcrypt 1.6.2, with MIT Kerberos, with GeoIP, with
PortAudio V19-devel (built Feb 15 2014 23:28:00), without AirPcap.

Running on Linux 3.16.0-4-amd64, with locale en_US.UTF-8, with libpcap version
1.6.2, with libz 1.2.8, GnuTLS 3.3.8, Gcrypt 1.6.2.
Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz

Built using gcc 4.9.2.
--
Correct 4-byte IPv4 address is incorrectly detected as wrong 6-byte IPv4
address and cannot be decoded (IPv4 Interface Address (sub-TLV type 6) and IPv4
Neighbor Address (sub-TLV type 8) of Extended IS Reachability TLV (TLV type 22)
of IS-IS. Look at attached dump.

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