PHPYun /uploads/member/ajax.class.php SQL注入漏洞

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漏洞原理
参数未过滤，直接被带入到SQL语句中进行查询，导致注入漏洞的产生

漏洞分析
查看/uploads/member/ajax.class.php文件

function getzphcom_action(){
    
    

        if(!$_GET['jobid']){
    
    

            $arr['status']=0;

            $arr['content']=iconv("gbk","utf-8","您还没有职位，<a href='".Url("login",array(),"1")."'>请先登录</a>");

        }else{
    
    

            $row=$this->obj->DB_select_all("company_job","`id` in (".$_GET['jobid'].") and `uid`='".$this->uid."' and `r_status`<>'2' and `status`<>'1'","`name`");

            $space=$this->obj->DB_select_all("zhaopinhui_space");

            $zhaopinhui=$this->obj->DB_select_once("zhaopinhui","`id`='".intval($_GET['zid'])."'","`title`,`address`,`starttime`,`endtime`");

            $com=$this->obj->DB_select_once("zhaopinhui_com","`zid`='".intval($_GET['zid'])."' and `uid`='".$this->uid."'");

            foreach($row as $v){
    
    

                $data[]=$v['name'];

            }

            $spaces=array();

            foreach($space as $val){
    
    

                $spaces[$val['id']]=$val['name'];

            }

            $cname=@implode('、',$data);

            $arr['status']=1;

            $arr['content']=iconv("gbk","utf-8",$cname);

            $arr['title']=iconv("gbk","utf-8",$zhaopinhui['title']);

            $arr['address']=iconv("gbk","utf-8",$zhaopinhui['address']);

            $arr['starttime']=iconv("gbk","utf-8",$zhaopinhui['starttime']);

            $arr['endtime']=iconv("gbk","utf-8",$zhaopinhui['endtime']);

            $arr['sid']=iconv("gbk","utf-8",$spaces[$com['sid']]);

            $arr['bid']=iconv("gbk","utf-8",$spaces[$com['bid']]);

            $arr['cid']=iconv("gbk","utf-8",$spaces[$com['cid']]);

        }

        echo json_encode($arr);

    }

分析上面代码段：

$row=$this->obj->DB_select_all("company_job","`id` in (".$_GET['jobid'].") and `uid`='".$this->uid."' and `r_status`<>'2' and `status`<>'1'","`name`");

可以看到这里没有对$_GET[‘jobid’]进行过滤
继续跟进DB_select_all()函数，查看/uploads/app/public/action.class.php文件

function DB_select_all($tablename, $where = 1, $select = "*",$special='') {
    
    

        $cachename=$tablename.$where;

        if(!$row_return=$this->Memcache_set($cachename)){
    
    

            $row_return=array();

            if($this->siteadmindir&&$special==''){
    
    

                $where = $this->site_fetchsql($where,$tablename);

            }

            $SQL = "SELECT $select FROM `" . $this->def . $tablename . "` WHERE ".$where;

            $query=$this->db->query($SQL);

            while($row=$this->db->fetch_array($query)){
    
    $row_return[]=$row;}

            $this->Memcache_set($cachename,$row_return);

        }

        return $row_return;

    }

可以看出依旧没有对$_GET[‘jobid’]进行过滤
所以最终拼出来的SQL语句是

SELECT `name` FROM `phpyun_company_job` WHERE `id` in (可控) and `uid`='1' and `r_status`<>'2' and `status`<>'1'

由于360waf对于接受到的参数，单引号，双引号进行转义,英文括号变中文括号，关键字select,update,delete,insert，/**/,带有这些就会被360拦截，所以可以用xor进行绕过，执行SQL注入漏洞