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www.waraxe.us Forum Index -> All other security holes -> this file is vuln????
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this file is vuln????
PostPosted: Thu Jul 01, 2010 12:22 pm Reply with quote
Advanced user
Advanced user
Joined: Jan 26, 2008
Posts: 128

Hey i m wonderin' if the file is vulnerable or no, With RFI or lfi,remote execution..Look please and tell...


// Check to ensure this file is within the rest of the framework
defined('JPATH_BASE') or die();

class patTemplate_OutputFilter_PdfLatex extends patTemplate_OutputFilter
* filter name
* This has to be set in the final
* filter classes.
* @var string
var $_name = 'PdfLatex';

var $_params = array(
'cacheFolder' => './'

* tidy the data
* @access public
* @param string data
* @return string compressed data
function apply( $data )
$cacheFolder = $this->getParam('cacheFolder');
$texFile = tempnam($cacheFolder, 'pt_tex_');
$fp = fopen($texFile, 'w');
fwrite($fp, $data);

$command = 'pdflatex '.$texFile;

$pdf = $texFile . '.pdf';
$pdf = file_get_contents($pdf);

return $pdf;
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PostPosted: Thu Jul 01, 2010 7:11 pm Reply with quote
Site admin
Site admin
Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu

file_get_contents() and exec() both are using string parameter coming from php function tempnam:


And $cacheFolder is hardcoded, so there is nothing to exploit.
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PostPosted: Fri Jul 02, 2010 5:06 pm Reply with quote
Joined: Jul 02, 2010
Posts: 1

If you find a User-tainted UNSERIALIZE() you can change the $cacheFolder to inject OS commands. It depends on your OS if non-existing dirs like

Foo;nc -l -p7777 -e `which bash`

Are excepted by tempnam(), You'll have to check. Smile

I asked God for a bike, but I know God doesn´t work that way. So I stole a bike and asked for forgiveness.
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this file is vuln????
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