> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/ja/web/ssrf/basic-ssrf-against-local-server.md).

# ローカルサーバーに対する基本的なSSRF

PortSwigger Web Security Academy のラボ向けメモ。ローカルサーバーに対する基本的なSSRFに関するもので、攻撃手順、ペイロードのテスト、Burp Suite による検証、および対策の文脈を含む。

### ローカルサーバーに対する基本的なSSRF

このラボには、内部サービスに問い合わせる在庫確認機能があります。/ 目的は、このチェックで使用されるURLを変更して、利用可能な管理画面にアクセスすることです `HTTP://localhost/admin` そしてユーザーを削除します **carlos**.

#### **分析と悪用**

その **stockApi** パラメータは内部URLにクエリを送信します:

```bash
stockApi=http://stock.weliketoshop.net:8080/product/stock/check?productId=1&storeId=1
```

リクエストを傍受することで、このURLをローカルのターゲットに置き換えることができます。/ サーバーは次の値を正しく処理します:

```javascript
stockApi=http://localhost/admin
```

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-5f1135ef7a777270cae920e4e524c9c78b0e4bda%2Fimage%20(337).png?alt=media" alt=""><figcaption></figcaption></figure>

これにより管理画面を表示できます。

#### **ユーザーの削除**

管理画面のHTMLコード内で、ユーザー削除に使用されるパラメータを確認できます:

```
/admin/delete?username=carlos
```

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-9f056e8db3df4ebc8a07a5cbb7852ca26f7d3ad8%2Fimage%20(338).png?alt=media" alt=""><figcaption></figcaption></figure>


---

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