Wireshark-bugs: [Wireshark-bugs] [Bug 12675] New: PMKID is incorrectly decoded under RSN Vendor
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Wed, 27 Jul 2016 20:05:21 +0000
Bug ID 12675
Summary PMKID is incorrectly decoded under RSN Vendor specific IE in EAPOL packet 1
Product Wireshark
Version 2.1.x (Experimental)
Hardware x86
OS Windows 7
Status UNCONFIRMED
Severity Major
Priority Low
Component Dissection engine (libwireshark)
Assignee bugzilla-admin@wireshark.org
Reporter padmaja279@gmail.com 

Created attachment 14769 [details]
Packet capture

Build Information:
Version 2.1.1 (v2.1.1-0-g06ba81b from master)

Copyright 1998-2016 Gerald Combs <gerald@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 5.6.1, with WinPcap (4_1_3), with GLib 2.42.0, with
zlib 1.2.8, with SMI 0.4.8, with c-ares 1.11.0, with Lua 5.2, with GnuTLS
3.2.15, with Gcrypt 1.6.2, with MIT Kerberos, with GeoIP, with QtMultimedia,
with AirPcap.

Running on 64-bit Windows 7 Service Pack 1, build 7601, with locale
English_United States.1252, with WinPcap version 4.1.3 (packet.dll version
4.1.0.2980), based on libpcap version 1.0 branch 1_0_rel0b (20091008), with
GnuTLS 3.2.15, with Gcrypt 1.6.2, without AirPcap.
Intel(R) Core(TM) i7-5600U CPU @ 2.60GHz (with SSE4.2), with 7888MB of physical
memory.


Built using Microsoft Visual C++ 12.0 build 40629

Wireshark is Open Source Software released under the GNU General Public
License.

Check the man page and http://www.wireshark.org for more information.
--
Summary:
=======
PMKID is incorrectly decoded under RSN Vendor specific IE in EAPOL packet 1

Attachments:
============
PFA packet capture

Issue:
======
PMKID is supposed to be "4c44fef26cdc56ce0b37abc632024f11", but is decoded as
"044c44fef26cdc56ce0b37abc632024f".

*** It prepeends the length byte and excludes last byte.

Reassoc req:
============
        Tag: RSN Information
            Tag Number: RSN Information (48)
            Tag length: 38
            RSN Version: 1
            Group Cipher Suite: 00-0f-ac AES (CCM)
            Pairwise Cipher Suite Count: 1
            Pairwise Cipher Suite List 00-0f-ac AES (CCM)
            Auth Key Management (AKM) Suite Count: 1
            Auth Key Management (AKM) List 00-0f-ac WPA
            RSN Capabilities: 0x0000
            PMKID Count: 1
            PMKID List
                PMKID: 4c44fef26cdc56ce0b37abc632024f11
        Tag: Extended Supported Rates 6, 9, 12, 48, [Mbit/sec]
        Tag: Extended Capabilities (8 octets)
        Tag: Vendor Specific: Broadcom

EAPOL Frame1:
============
Tag: Vendor Specific: Ieee8021: RSN
    Tag Number: Vendor Specific (221)
    Tag length: 20
    OUI: 00-0f-ac
    Vendor Specific OUI Type: 4
    RSN PMKID: 044c44fef26cdc56ce0b37abc632024f

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