> 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/access-control/insecure-direct-references-to-objects.md).

# オブジェクトへの安全でない直接参照

オブジェクトへの安全でない直接参照の PortSwigger Web Security Academy ラボ向けノート。攻撃フロー、ペイロードテスト、Burp Suite による検証、および是正策の文脈を含みます。

### 安全でない直接オブジェクト参照

**ラボの目標：** ユーザーのチャットログはサーバーのファイルシステム上に直接保存され、静的URLを介して取得されます。目標はユーザーのパスワードを見つけることです **carlos** そして彼のアカウントにログインします。

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-1b0aaf41f74f900b5c8287d94f5a1f988cf46cd8%2Fimage%20(279).png?alt=media" alt="" width="563"><figcaption></figcaption></figure>

メール機能に、チャットの文字起こしをダウンロードするオプションがあることが確認されています。 **GET** リクエスト。

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-c97bb187a80db0ca44fdd595dfc5cedf092298f9%2Fimage%20(280).png?alt=media" alt=""><figcaption></figcaption></figure>

URL は次のとおりです：

```
/download-transcript/1.txt
```

URL 内のファイル識別子を単に変更するだけで、保護なしに他のユーザーの文字起こしにアクセスできます。例えば：

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-ec88b2036630f703927a967b48126a15606edfa2%2Fimage%20(281).png?alt=media" alt=""><figcaption></figcaption></figure>

このファイルには、以下を含む会話の内容が表示されます **carlos のパスワード**.


---

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