https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6030
Summary: PPPoE Length field is incorrect
Product: Wireshark
Version: 1.6.0
Platform: x86
OS/Version: Windows 7
Status: NEW
Severity: Minor
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: john_headbutt@xxxxxxxxxxx
Build Information:
Version 1.6.0 (SVN Rev 37592 from /trunk-1.6)
Copyright 1998-2011 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 (32-bit) with GTK+ 2.22.1, with GLib 2.26.1, with WinPcap (version
unknown), with libz 1.2.5, without POSIX capabilities, without libpcre, with
SMI
0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python, with GnuTLS 2.10.3,
with
Gcrypt 1.4.6, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built
Jun
7 2011), with AirPcap.
Running on 32-bit Windows 7, build 7600, with WinPcap version 4.1.2 (packet.dll
version 4.1.0.2001), based on libpcap version 1.0 branch 1_0_rel0b (20091008),
GnuTLS 2.10.3, Gcrypt 1.4.6, without AirPcap.
Built using Microsoft Visual C++ 9.0 build 21022
Wireshark is Open Source Software released under the GNU General Public
License.
Check the man page and http://www.wireshark.org for more information.
--
The validation of the Length field in PPPoE headers is incorrect. Wireshark is
expecting the PPPoE header itself to be part of the length when in fact it is
not.
RFC2516 states:
The LENGTH field is sixteen bits. The value, in network byte order,
indicates the length of the PPPoE payload. It does not include the
length of the Ethernet or PPPoE headers.
Currently a yellow warning appears on all PPPoE packets stating the length is
incorrect
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