[VIM] ATutor 1.5.3 Cross Site Scripting
Steven M. Christey
coley at mitre.org
Fri Jul 21 18:07:26 EDT 2006
Sent the following to the atutor vendor and CC'd Bugtraq. Did some
diff digging between the original and patched versions.
Also, the diffs suggest a lot of SQL injection related fixes, and some
of the originally mentioned XSS might be resultant from SQL injection.
Don't have enough time to dig deeper though, sorry...
>The mentioned SQL injection vulnerability is not possible. Please
Could you explain this further?
In 1.5.3, edit_forum() in forums.inc.php has the following:
$sql = "UPDATE ".TABLE_PREFIX."forums SET title='$_POST[title]', description='$_POST[body]' WHERE forum_id=$_POST[fid]";
$result = mysql_query($sql,$db);
where is appears that $_POST[fid] is directly inserted into the SQL
In 126.96.36.199, a new statement has been added to the same function, just
before the two statements above:
$_POST['fid'] = intval($_POST['fid']);
This looks like cleansing that would be relevant for SQL injection.
For those who were wondering, both $_POST['title'] and $_POST['body']
are re-set using addslashes:
$_POST['title'] = $addslashes($_POST['title']);
$_POST['body'] = $addslashes($_POST['body']);
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