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IT Security and Insecurity Portal |
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How to fix new discovered flaws in Reviews module |
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 Posted: Tue Jun 08, 2004 2:01 pm |
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| waraxe |
| Site admin |
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| Joined: May 11, 2004 |
| Posts: 2407 |
| Location: Estonia, Tartu |
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Here is the original advisory:
http://bichosoft.webcindario.com/advisory-05.txt
http://groups.google.com/groups?selm=ca3hg2%24216i%241%40FreeBSD.csie.NCTU.edu.tw&output=gplain
There are 2 problems in Reviews module index.php , one of them leading to full path disclosure (in Windows servers only) and secons has XSS capabilities. Here is the fix:
Fist, open index.php fom "/modules/reviews" and locate this code fragment (~line 524):
| Code: |
function showcontent($id, $page) {
global $admin, $uimages, $prefix, $db, $module_name;
$id = intval($id);
$page = intval($page);
include ('header.php');
OpenTable();
if (($page == 1) OR ($page == "")) {
$db->sql_query("UPDATE ".$prefix."_reviews SET hits=hits+1 WHERE id='$id'");
}
$result = $db->sql_query("SELECT * FROM ".$prefix."_reviews WHERE id='$id'");
$myrow = $db->sql_fetchrow($result);
$id = intval($myrow['id']);
$date = $myrow['date'];
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Now add additional sanitize code, so final result will be as:
| Code: |
function showcontent($id, $page) {
global $admin, $uimages, $prefix, $db, $module_name;
$id = intval($id);
$page = intval($page);
include ('header.php');
OpenTable();
if (($page == 1) OR ($page == "")) {
$db->sql_query("UPDATE ".$prefix."_reviews SET hits=hits+1 WHERE id='$id'");
}
$result = $db->sql_query("SELECT * FROM ".$prefix."_reviews WHERE id='$id'");
$myrow = $db->sql_fetchrow($result);
$id = intval($myrow['id']);
//-- Fix by waraxe http://www.waraxe.us --------
if(empty($id)) die('Wrong ID!');
//------------------------------------------------------
$date = $myrow['date'];
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Next we will patch the xss hole. So find this code fragment from "/modules/Revies/index.php" (~line 418):
| Code: |
function postcomment($id, $title) {
global $user, $cookie, $AllowableHTML, $anonymous, $module_name;
include("header.php");
cookiedecode($user);
OpenTable();
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And add additional security code, so finally you will have:
| Code: |
function postcomment($id, $title) {
global $user, $cookie, $AllowableHTML, $anonymous, $module_name;
include("header.php");
cookiedecode($user);
//-- xss prevention by waraxe, refference: http://www.waraxe.us/? modname=sa&id=002
$title = htmlentities(urldecode($title));
//--------------------------------------------------------------------------
if(empty($id)||!(is_numeric($id)))
{
die('Wrong ID!');
}
else
{
$id = intval($id);
}
OpenTable();
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Congratulations, you have now one step closer to flawless nuke  |
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| Posted: Wed Jun 09, 2004 1:42 pm |
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| SteX |
| Advanced user |
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| Joined: May 18, 2004 |
| Posts: 181 |
| Location: Serbia |
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2 many steps to flawless nuke  |
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_________________
We would change the world, but God won't give us the sourcecode...
....Watch the master. Follow the master. Be the master....
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| Posted: Thu Jun 10, 2004 4:45 pm |
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| waraxe |
| Site admin |
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| Joined: May 11, 2004 |
| Posts: 2407 |
| Location: Estonia, Tartu |
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More bugfixes in Reviews module will be published soon, stay tuned!  |
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