> 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/de/web/ssrf/blind-ssrf-with-out-of-band-detection.md).

# Blinde SSRF mit Out-of-Band-Erkennung

Notizen zu blinder SSRF mit Out-of-Band-Erkennung für Labs der PortSwigger Web Security Academy, einschließlich Ausnutzungs-Workflow, Payload-Tests, Burp-Suite-Validierung und Behebungskontext.

### Blinde SSRF mit Out-of-Band-Erkennung

Dieses Labor verwendet ein Analysemodule, das eine HTTP-Anfrage an die URL im **Referer** Header sendet, wenn eine Produktseite geladen wird. / Um das Labor zu lösen, müssen Sie dieses Verhalten nutzen, um eine Anfrage an den öffentlichen Server auszulösen **Burp Collaborator**.

<figure><img src="https://2955439919-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-ed56aa2b03726891bc5b78226d04ba7cb364aafd%2Fimage%20(344).png?alt=media" alt=""><figcaption></figcaption></figure>

Wir stellen fest, dass die Seite den Wert des Headers Referer ausliest. / Das Ziel besteht daher darin, diese Anfrage an unsere Collaborator-Instanz umzuleiten.

Senden Sie einfach eine Anfrage mit einem bösartigen Referer, zum Beispiel:

```
Referer: https://ld2xyh6ornbpdovp5ww0sartzk5bt1hq.oastify.com
```

Der Server führt dann eine ausgehende Anfrage aus, die in Burp Collaborator erscheint und die blinde SSRF-Aktivität bestätigt.

<figure><img src="https://2955439919-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-0db3bc364786d27138b9b40fb14a31df6cca91e5%2Fimage%20(345).png?alt=media" alt=""><figcaption></figcaption></figure>


---

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