aWebNews <= 1.0 (login.php) Remote DocumentRoot file disclosure

[Federico Fazzi <federico () autistici org>]

*/ Federico Fazzi, <federico () autistici org>
*/ aWebNews <= 1.0 (login.php) Remote DocumentRoot file disclosure
*/ 04/06/2006 5:48

login.php: line 64-68,

Bug:

-- start --
if ($_GET['page'] == "") {
$pagetogo = "index.php";
} else {
$pagetogo = $_GET['page'];
}
-- end --

Proof of concept:

Open the browser and go at:

http://example.org/aWebNews/login.php?page=/aWebNews/[some file]

now insert login and password and press enter.. now you can
read [some file] at documentroot master directory.

Patch:

--- login.php  2006-06-04 05:45:51.000000000 +0200
+++ login.php   2006-06-04 05:44:22.000000000 +0200
@@ -61,10 +61,8 @@
}
else
{
-if ($_GET['page'] == "") {
+if ($_GET['page'] != 'index.php') {
$pagetogo = "index.php";
-} else {
-$pagetogo = $_GET['page'];
}
?>
      <div class="side-headline">Login </div><div align="center"><br>Your are logged in as: 
<b><?=$_SESSION['Username'];?></b><br>Please <a href="<?=$_SERVER['PHP_SELF'];?>?mode=logout">Logout.</a><br>&nbsp;

*/ end of file