Wireshark · Wireshark-bugs: [Wireshark-bugs] [Bug 11045] New: Bad interpretation of "Certificate Verify" in TLSv1.2

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Bug ID	11045
Summary	Bad interpretation of "Certificate Verify" in TLSv1.2
Product	Wireshark
Version	1.12.4
Hardware	x86-64
OS	Windows 7
Status	UNCONFIRMED
Severity	Major
Priority	Low
Component	Dissection engine (libwireshark)
Assignee	bugzilla-admin@wireshark.org
Reporter	bionet.armote@gmail.com

Created attachment 13499 [details]
dissection of the packet

Build Information:
Version 1.12.4 (v1.12.4-0-gb4861da from master-1.12)

Copyright 1998-2015 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+ 2.24.23, with Cairo 1.10.2, with Pango 1.34.0, with
GLib 2.38.0, with WinPcap (4_1_3), with libz 1.2.5, with SMI 0.4.8, with c-ares
1.9.1, with Lua 5.2, without Python, with GnuTLS 3.2.15, with Gcrypt 1.6.2,
without Kerberos, with GeoIP, with PortAudio V19-devel (built Mar  4 2015),
with
AirPcap.

Running on 64-bit Windows 7 Service Pack 1, build 7601, with WinPcap version
4.1.3 (packet.dll version 4.1.0.2980), based on libpcap version 1.0 branch
1_0_rel0b (20091008), GnuTLS 3.2.15, Gcrypt 1.6.2, without AirPcap.
Intel(R) Core(TM) i5-4570 CPU @ 3.20GHz, with 16065MB of physical memory.


Built using Microsoft Visual C++ 10.0 build 40219

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

Check the man page and http://www.wireshark.org for more information.
--
In TLSv1.2 the "Certificate Verify" message contains additional fields before
the "Signature length" field. First is the hash algorithm identifier (1 octet),
and second is the signature algorithm identifier (1 octet).

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